Multicast protocols are used to deliver Multicast packets from one source to multi receivers. They facilitate better bandwidth utilization, less host and router processing, making them ideal for usage in application like Video/ Audio conferencing, Whiteboard tools, stock distribution tickers etc.
Multicast applications send one copy of a packet and address it to a group of receivers (Multicast Group Address) that want to receive it rather than to a single receiver (unicast address). Multicast depends on the network to forward the packets to only those networks and hosts that need to receive them.
Multicast capable/enabled routers forward multicast packets based on the routes in the Multicast Routing Information Base (MRIB). These routes are created in the MRIB during the process of building multicast distribution trees by the Multicast Protocols running on the router. Different IP Multicast routing protocols use different techniques to construct these multicast distribution trees.
If Multicast traffic is to be routed through a part of a network that does not support multicasting (routers which are not multicast capable) then the multicast packets are encapsulated in an IP datagram and sent as a unicast packet. When the multicast router at the remote end of the tunnel receives the packet, the router strips off the IP encapsulation and forwards the packet as an IP Multicast packet. This process of encapsulating multicast packets in IP is called tunneling.
To display the IP Multicast menu page, click IP Multicast in the tree view. The IP Multicast menu page contains links to the following procedures:
DVMRP exchanges probe packets with all its DVMRP enabled routers, it establishes two way neighboring relationships, and it builds a neighbor table. It exchanges report packets and creates a unicast topology table, with which it builds the multicast routing table. This table is used to route the multicast packets. Since every DVMRP router uses the same unicast routing protocol, routing loops are avoided.
The DVMRP menu page contains links to web pages that define and display DVMRP parameters and data. To display this page, click IP Multicast® DVMRP in the tree view.
Following are the web pages accessible from this menu page:
Use the DVMRP Global Configurationpage to configure global DVMRP settings.
To display the page, click IP Multicast® DVMRP® Global Configurationin the tree view.
Figure 13-1. DVMRP Global Configuration
The DVMRP Global Configuration page contains the following fields:
Admin Mode — Select Enable or Disable from the drop-down menu. This sets the administrative status of DVMRP to active or inactive. The default is Disable.
Version — The current value of the DVMRP version string.
Total Number of Routes — The number of routes in the DVMRP routing table.
Reachable Routes — The number of routes in the DVMRP routing table that have a non-infinite metric.
Setting the DVMRP Admin Mode
Open the DVMRP Global Configurationpage.
Set Admin Mode to Enable or Disable, to turn DVMRP on or off.
Click Apply Changes.
The DVMRP configuration is saved, and the device is updated.
Configuring DVMRP using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
DVMRP Interface Configuration
Use the DVMRPInterface Configurationpage to configure a DVMRP interface. You must configure at least one router interface before you configure a DVMRP interface. Otherwise you see a message telling you that no router interfaces are available, and the configuration screen is not displayed.
To display the page, click IP Multicast® DVMRP® Interface Configurationin the tree view.
Figure 13-2. DVMRP Interface Configuration
The DVMRPInterface Configuration page contains the following fields:
Interface — Select the interface for which data is to be configured. You must configure at least one router interface before you configure a DVMRP interface.
Interface Mode — Select Enable or Disable from the drop-down menu to set the administrative mode of the selected DVMRP routing interface.
Interface Metric — Enter the DVMRP metric for the selected interface. This value is sent in DVMRP messages as the cost to reach this network. Valid values are from 1 to 31.
Configuring a DVMRP Interface
Open the DVMRP Interface Configurationpage.
Select the interface to configure from the Interface field.
Modify the remaining fields as needed.
Click Apply Changes.
The interface configuration is saved, and the device is updated.
Configuring a DVMRP Interface using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
DVMRP Configuration Summary
Use the DVMRP Configuration Summarypage to display or print the DVMRP configuration and data for a selected interface. You must configure at least one router interface before you can display data for a DVMRP interface. Otherwise you see a message telling you that no router interfaces are available, and the configuration summary screen is not displayed.
To display the page, click IP Multicast® DVMRP® Configuration Summaryin the tree view.
Figure 13-3. DVMRP Configuration Summary
The DVMRP Configuration Summary page contains the following fields:
Interface — Select the interface for which data is to be displayed. You must configure at least one router interface before you can display data for a DVMRP interface.
Interface Parameters
Interface Mode — Displays the administrative mode of the selected DVMRP routing interface, either Enable or Disable.
Protocol State — Displays the operational state of the DVMRP protocol on the selected interface, either Operational or Non-operational.
Local Address — Displays the IP address used as a source address in packets sent from the selected interface.
Interface Metric — Displays the metric used to calculate distance vectors for the selected interface.
Interface Statistics
Generation ID — Displays the DVMRP generation ID used by the router for the selected interface. This value is reset every time an interface is (re)started and is placed in prune messages. A change in generation ID informs the neighbor routers that any previous information about this router should be discarded.
Received Bad Packets — The number of invalid packets received on the selected interface.
Received Bad Routes — The number of invalid routes received on the selected interface.
Sent Routes — The number of routes sent on the selected interface.
Neighbor Parameters
Neighbor IP — The IP address of the neighbor whose information is displayed.
State — The state of the specified neighbor router on the selected interface, either active or down.
Neighbor Uptime — The DVMRP uptime for the specified neighbor on the selected interface. This is the time since the neighbor entry was learned.
Neighbor Expiry Time — The DVMRP expiry time for the specified neighbor on the selected interface. This is the time left before this neighbor entry ages out, and is not applicable if the neighbor router's state is down.
Generation ID — The DVMRP generation ID for the specified neighbor on the selected interface.
Major Version — The DVMRP Major Version for the specified neighbor on the selected interface.
Minor Version — The DVMRP Minor Version for the specified neighbor on the selected interface.
Capabilities — The DVMRP capabilities of the specified neighbor on the selected interface.
Received Routes — The number of routes received for the specified neighbor on the selected interface.
Received Bad Packets — The number of invalid packets received for the specified neighbor on the selected interface.
Received Bad Routes — The number of invalid routes received for the specified neighbor on the selected interface.
Displaying DVMRP Configuration Summary using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
Next Hop Summary
Use the Next Hop Summarypage to display or print the next hop summary by Source IP.
To display the page, click IP Multicast® DVMRP® Next Hop Summaryin the tree view.
Figure 13-4. Next Hop Summary
The Next Hop Summary page displays the following fields:
Source IP — Displays the IP address used with the source mask to identify the source network for this table entry.
Source Mask — Displays the network mask used with the source IP address.
Next Hop Interface — Displays the outgoing interface for this next hop.
Type — Displays the next hop type. Leaf means that no downstream dependent neighbors exist on the outgoing interface. Otherwise, the type is Branch.
Displaying the Next Hop Summary using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
Prune Summary
Use the Prune Summarypage to display or print the prune summary by Group IP.
To display the page, click IP Multicast® DVMRP® Prune Summaryin the tree view.
Figure 13-5. Prune Summary
The Prune Summary page displays the following fields:
Group IP — The group address which has been pruned.
Source IP — The address of the source or source network which has been pruned.
Source Mask — The subnet mask to be combined with the source IP address to identify the source or source network which has been pruned.
Expiry Time (secs) — The amount of time remaining before this prune should expire at the upstream neighbor. If no prune messages have been received from downstream neighbors, this is set to value of the default prune lifetime timer, otherwise it is set to the smallest received value or the default timer, whichever is less.
Displaying the Prune Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
Route Summary
Use the Route Summarypage to display or print the DVMRP route summary.
To display the page, click IP Multicast® DVMRP® Route Summaryin the tree view.
Figure 13-6. Route Summary
The Route Summary page displays the following fields:
Source Address - The network address that is combined with the source mask to identify the sources for this entry.
Source Mask — The subnet mask to be combined with the source address to identify the sources for this entry.
Upstream Neighbor — The address of the upstream neighbor (for example, RPF neighbor) from which IP datagrams from these sources are received.
Interface — The interface on which IP datagrams sent by these sources are received. A value of 0 typically means the route is an aggregate for which no next-hop interface exists.
Metric — The distance in hops to the source subnet.
Expiry Time — The minimum amount of time remaining before this entry is aged out.
Up Time — The time since the route represented by this entry was learned by the router.
Displaying the DVMRP Route Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
DVMRP Commands
IGMP
The Internet Group Management Protocol (IGMP) is used by IPv4 systems (hosts and routers) to report their IP multicast group memberships to any neighboring multicast routers. The 6200 series performs the multicast router role of the IGMP protocol, which means it collects the membership information needed by the active multicast routing. The currently supported multicast routing protocols in the 6200 series are DVMRP, PIM-DM, and PIM-SM.
The 6200 series supports IGMP Version 3. Version 3 adds support for source filtering, which is the ability for a system to report interest in receiving packets only from specific source addresses, as required to support Source-Specific Multicast [SSM], or from all but specific source addresses, sent to a particular multicast address. Version 3 is designed to be interoperable with Versions 1 and 2.
The IGMP menu page contains links to web pages that define and display IGMP parameters and data. To display this page, click IP Multicast® IGMP in the tree view.
Following are the web pages accessible from this menu page:
Use the IGMP Global Configurationpage to set IGMP on the system to active or inactive.
To display the page, click IP Multicast® IGMP® Global Configurationin the tree view.
Figure 13-7. IGMP Global Configuration
The IGMP Global Configuration page contains the following field:
Admin Mode — Select Enable or Disable from the drop-down menu to set the administrative status of IGMP in the router to active or inactive. The default is Disable.
Setting the IGMP Mode
Open the IGMP Global Configurationpage.
Set Admin Mode to Enable or Disable, to turn IGMP on or off.
Click Apply Changes.
The IGMP configuration is saved, and the device is updated.
Setting IGMP Mode using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
IGMP Commands
Routing Interface
The Routing Interface menu page contains links to web pages that configure and display IGMP routing parameters and data. To display this page, click IP Multicast® IGMP® Routing Interface in the tree view. Following are the web pages accessible from this menu page:
Use the IGMP Interface Configurationpage to configure and/or display router interface parameters. You must configure at least one valid routing interface before you can access this page and configure IP Multicast IGMP.
To display the page, click IP Multicast® IGMP® Routing Interface® Interface Configurationin the tree view.
Figure 13-8. IGMP Interface Configuration
The IGMP Interface Configuration page contains the following fields:
Interface — Select the interface for which data is to be displayed or configured from the drop-down menu.
Interface Mode — Select Enable or Disable from the drop-down menu to set the administrative status of IGMP on the selected interface. The default is Disable.
Version — Enter the version of IGMP you want to configure on the selected interface. Valid values are 1 to 3, and the default value is 3. This field is configurable only when IGMP interface mode is enabled.
Robustness — Enter the robustness value. This variable allows tuning for the expected packet loss on a subnet. If you expect the subnet to be lossy, you should enter a higher number for this parameter. IGMP is robust to (robustness variable-1) packet losses. Valid values are from 1 to 255. The default value is 2.
Query Interval (secs) — Enter the frequency in seconds at which IGMP host-query packets are to be transmitted on this interface. Valid values are from 1 to 3600. The default value is 125.
Query Max Response Time (1/10 of a second) — Enter the maximum query response time to be advertised in IGMPv2 queries on this interface, in tenths of a second. The default value is 100. Valid values are from 0 to 255.
Startup Query Interval (secs) — Enter the number of seconds between the transmission of startup queries on the selected interface. The valid values are from 1 to 300. The default value is 31.
Startup Query Count — Enter the number of queries to be sent on startup. The valid values are from 1 to 20. The default value is 2.
Last Member Query Interval (1/10 of a second) — Enter the last member query interval in tenths of a second. This is the maximum response time to be inserted into group-specific queries sent in response to leave group messages, and is also the amount of time between group-specific query messages. Valid values are from 0 to 255. The default value is 10. This value is not used for IGMP version 1.
Last Member Query Count — Enter the number of queries to be sent on receiving a leave group report. Valid values are from 1 to 20. The default value is 2.
Configuring an IGMP Routing Interface
Open the IGMP Interface Configurationpage.
Select the interface to configure from the Interface field.
Modify the remaining fields as needed.
Click Apply Changes.
The interface configuration is saved, and the device is updated.
Configuring an IGMP Routing Interface using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
IGMP Commands
IGMP Configuration Summary
Use the IGMP Configuration Summarypage to display IGMP routing parameters and data. You must configure at least one IGMP router interface to access this page.
To display the page, click IP Multicast® IGMP® Routing Interface® Configuration Summaryin the tree view.
Figure 13-9. IGMP Configuration Summary
The IGMP Configuration Summary page displays the following fields:
Interface — Select the interface for which data is to be displayed.
Interface Parameters
Interface Mode — The administrative status of IGMP on the selected interface.
IP Address — The IP address of the selected interface.
Subnet Mask — The subnet mask for the IP address of the selected interface.
Protocol State — The operational state of IGMP on the selected interface.
Version — The version of IGMP configured on the selected interface.
Query Interval (secs) — The frequency at which IGMP host-query packets are transmitted on the selected interface.
Query Max Response Time (1/10 of a second) — The maximum query response time advertised in IGMPv2 queries sent from the selected interface.
Robustness — The robustness parameter for the selected interface. This variable allows tuning for the expected packet loss on a subnet. If a subnet is expected to be lossy, the robustness variable may be increased. IGMP is robust to (robustness variable-1) packet losses.
Startup Query Interval (secs) — The interval at which startup queries are sent on the selected interface.
Startup Query Count — The number of queries to be sent on startup.
Last Member Query Interval (1/10 of a second) — The last member query interval is the maximum response time inserted into group-specific queries sent in response to leave group messages, and is also the amount of time between group-specific query messages. This value may be tuned to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group. This value is not used for IGMP version 1.
Last Member Query Count — The number of queries to be sent on receiving a leave group report.
Interface Statistics
Querier — The address of the IGMP querier on the IP subnet to which the selected interface is attached.
Querier Status — Indicates whether the selected interface is in querier or non querier mode.
Querier Up Time (secs) — The time in seconds since the IGMP interface querier was last changed.
Querier Expiry Time (secs) — The time in seconds remaining before the other querier present timer expires. If the local system is the querier, this is zero.
Wrong Version Queries — The number of queries that have been received on the selected interface with an IGMP version that does not match the IGMP version configured for the interface, over the lifetime of the entry. IGMP requires that all routers on a LAN be configured to run the same version of IGMP. Therefore, a configuration error is indicated if any queries are received with the wrong version number.
Number of Joins — The number of times a group membership has been added on the selected interface; that is, the number of times an entry for this interface has been added to the cache table. This gives an indication of the amount of IGMP activity on the interface.
Number of Groups — The current number of entries for the selected interface in the cache table.
Displaying the IGMP Routing Configuration using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
IGMP Commands
IGMP Cache Information
Use the IGMP Cache Informationpage to display cache parameters and data for an IP multicast group address. You must configure at least one IGMP router interface to access this page. Also, group membership reports must have been received on the selected interface for data to display here.
To display the page, click IP Multicast® IGMP® Routing Interface® Cache Informationin the tree view.
Figure 13-10. IGMP Cache Information
The IGMP Cache Information page displays the following fields:
Interface — Select the interface for which data is to be displayed.
Multicast Group IP — Select the IP multicast group address for which data is to be displayed. If no group membership reports have been received on the selected interface you cannot make this selection, and none of the data on this page displays.
Last Reporter — The IP address of the source of the last membership report received for the IP Multicast group address on the selected interface.
Up Time — The time elapsed since this entry was created.
Expiry Time — The minimum amount of time remaining before this entry ages out.
Version 1 Host Timer — The time remaining until the local router assumes that there are no longer any IGMP version 1 members on the IP subnet attached to this interface. When an IGMPv1 membership report is received, this timer is reset to the group membership timer. While this timer is non-zero, the local router ignores any IGMPv2 leave messages for this group that it receives on the selected interface. This field is displayed only if the interface is configured for IGMP version 1.
Version 2 Host Timer — The time remaining until the local router assumes that there are no longer any IGMP version 2 members on the IP subnet attached to this interface. When an IGMPv2 membership report is received, this timer is reset to the group membership timer. While this timer is non-zero, the local router ignores any IGMPv1 and IGMPv3 leave messages for this group that it receives on the selected interface. This field is displayed only if the interface is configured for IGMP version 2.
Compatibility — This parameter shows group compatibility mode (v1, v2 and v3) for this group on the specified interface.
Filter Mode — The source filter mode (Include/Exclude/NA) for the specified group on this interface. When NA mode is active the field is blank.
Displaying Cache Information using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
IGMP Commands
IGMP Interface Detailed Membership Info
Use the IGMP InterfaceDetailed Membership Infopage to display detailed membership information for an interface. You must configure at least one IGMP router interface to access this page. Also, group membership reports must have been received on the selected interface for data to display here.
To display the page, click IP Multicast® IGMP® Routing Interface® IGMP Interface Detailed Membership Info in the tree view.
Figure 13-11. IGMP Interface Detailed Membership Info
The IGMP InterfaceDetailed Membership Info page displays the following fields:
Interface — Select the interface for which data is to be displayed.
Multicast Group IP — Select the IP multicast group address for which data is to be displayed. If no group membership reports have been received on the selected interface, you cannot make this selection, and none of the remaining fields are displayed.
Interface — The interface on which multicast packets are forwarded.
Group Compatibility Mode — The group compatibility mode (v1, v2 and v3) for this group on the specified interface.
Source Filter Mode — The source filter mode (Include/Exclude/NA) for the specified group on this interface.
Source Hosts — The source addresses which are members of this multicast address.
Expiry Time — The expiry time interval against each source address which are members of this multicast group. This is the amount of time after which the specified source entry is aged out.
Displaying IGMP Interface Detailed Membership
Open the IGMP InterfaceDetailed Membership Infopage.
Select the interface to display from the Interface drop-down menu.
Select the desired Multicast Group IP.
Detailed membership information for this interface and multicast group IP displays.
Displaying IGMP Interface Detailed Membership using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
IGMP Commands
Proxy Interface
The purpose of IGMP Proxy is to enable a multicast router to learn multicast group membership information and be able to forward multicast packets based upon the group membership information. The IGMP Proxy is capable of functioning only in certain topologies that do not require Multicast Routing Protocols (i.e. DVMRP, PIM-DM, and PIM-SM) and that have a tree-like topology, as there is no support for features like spanning tree to correct packet route loops.
The Proxy Interface menu page contains links to web pages that define and display Proxy Interface parameters and data. To display this page, click IP Multicast® IGMP® Proxy Interface in the tree view. Following are the web pages accessible from this menu page:
The IGMP Proxy is used by IGMP Router (IPv4 system) to enable the system to issue IGMP host messages on behalf of hosts that the system discovered through standard IGMP router interfaces. Thus, this feature acts as proxy to all hosts residing on its router interfaces.
Use the IGMP Proxy Interface Configurationpage to configure IGMP proxy for an interface. You must have configured at least one router interface before configuring or displaying data for an IGMP proxy interface, and it should not be an IGMP routing interface.
To display the page, click IP Multicast® IGMP® Proxy Interface® Interface Configurationin the tree view.
Figure 13-12. IGMP Proxy Interface Configuration
The IGMP Proxy Interface Configuration page contains the following fields:
Interface — Select the port for which data is to be displayed or configured from the drop-down menu. You must have configured at least one router interface before configuring or displaying data for an IGMP Proxy interface and it should not be a IGMP routing interface. This field is configurable only when interface mode is disabled.
Interface Mode — Select Enable or Disable from the drop-down menu to set the administrative status of IGMP Proxy on the selected interface. The default is Disable. Routing, IGMP, and Multicast global admin modes should be enabled to enable IGMP Proxy interface mode.
Unsolicited Report Interval — Enter the unsolicited time interval value in seconds. The Unsolicited Report Interval is the time between repetitions of a host's initial report of membership in a group. Valid values are from 1 to 260. The default value is 1.
Configuring IGMP Proxy Interface
Open the IGMP Proxy Interface Configurationpage.
Select the interface to display from the Interface drop-down menu.
Modify the remaining fields as needed.
Click Apply Changes.
The proxy interface configuration is saved, and the device is updated.
Configuring IGMP Proxy Interface using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
IGMP Proxy Commands
IGMP Proxy Configuration Summary
Use the IGMP Proxy Configuration Summarypage to display proxy interface configurations by interface. You must have configured at least one router interface configured before data displays on this page.
To display the page, click IP Multicast® IGMP® Proxy Interface® Configuration Summaryin the tree view.
Figure 13-13. IGMP Proxy Configuration Summary
The IGMP Proxy Configuration Summary page displays the following fields:
Interface — Displays the interface on which IGMP proxy is enabled. There can be only one IGMP Proxy interface.
IP Address — The IP address of the IGMP Proxy interface.
Subnet Mask — The subnet mask for the IP address of the IGMP Proxy interface.
Admin Mode — The administrative status of IGMP Proxy on the selected interface.
Operational Mode — The operational state of IGMP Proxy interface.
Number of Groups — The current number of multicast group entries for the IGMP Proxy interface in the cache table.
Version — The version of IGMP configured on the IGMP Proxy interface.
Unsolicited Report Interval — The Unsolicited Report Interval is the time between repetitions of a host's initial report of membership in a group. Default: 1 second.
Version 1 Querier Timeout — The older IGMP version 1 querier timeout value in seconds. The Older Version Querier Interval is the time-out for transitioning a host back to IGMPv3 mode once an older version query is heard. When an older version query is received, hosts set their Older Version Querier Present Timer to Older Version Querier Interval.
Version 2 Querier Timeout — The older IGMP version 2 querier timeout value in seconds.
Proxy Start Frequency — The number of times the proxy was brought up.
Displaying IGMP Proxy Interface Configurations using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
IGMP Proxy Commands
IGMP Proxy Interface Membership Info
Use the IGMP Proxy Interface Membership Infopage to display interface membership data for a specific IP multicast group address. You must have configured at least one router interface before you can display interface membership information, and it should not be an IGMP routing interface. Also, if no group membership reports have been received on the selected interface, no data displays on this page.
To display the page, click IP Multicast® IGMP® Proxy Interface® Interface Membership Infoin the tree view.
Figure 13-14. IGMP Proxy Interface Membership Info
The IGMP Proxy Interface Membership Info page displays the following fields:
Interface — Displays the interface on which IGMP proxy is enabled.
Multicast Group IP — Select the IP multicast group address for which data is to be displayed. If no group membership reports have been received on the selected interface you cannot make this selection, and none of the following data displays.
Last Reporter — The IP address of the source of the last membership report received for the IP Multicast group address on the IGMP Proxy interface.
Up Time (secs) — The time elapsed since this entry was created.
State — The state of the host entry. A Host can be in one of the state. Non-member state - does not belong to the group on the interface. Delaying member state - host belongs to the group on the interface and report timer running. The report timer is used to send out the reports. Idle member state - host belongs to the group on the interface and no report timer running.
Number of Sources — The number of source hosts present in the selected multicast group.
Displaying IGMP Proxy Interface Membership Info using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
IGMP Proxy Commands
IGMP Proxy Interface Membership Info Detailed
Use the IGMP Proxy Interface Membership Info Detailedpage to display detailed interface membership data. You must have configured at least one router interface before you can display detailed interface membership information, and it should not be an IGMP routing interface. Also, if no group membership reports have been received on the selected interface you cannot display data.
To display the page, click IP Multicast® IGMP® Proxy Interface® Interface Membership Info Detailed in the tree view.
Figure 13-15. IGMP Proxy Interface Membership Info Detailed
The IGMP Proxy Interface Membership Info Detailed page contains the following fields:
Interface — Select the interface for which data is to be displayed.
Multicast Group IP — Select the IP multicast group address for which data is to be displayed. If no group membership reports have been received on the selected interface, you are not able to make this selection, and none of the non-configurable data is displayed.
Source IP — This parameter shows source addresses that are members of this multicast address.
Last Reporter — The IP address of the source of the last membership report received for the selected interface's IP Multicast group address.
Up Time (secs) — Displays the up time since the entry was created in the cache table.
State — The state of the host entry. A host can be in one of the following states:
Non-member State — Does not belong to the group on the interface.
Delaying Member State — Host belongs to the group on the interface and report timer is running. The report timer is used to send out the reports.
Idle Member State — Host belongs to the group on the interface and no report timer is running.
Filter Mode — The group filter mode (Include/Exclude/None) for the specified group on the IGMP Proxy interface.
Displaying Detailed IGMP Proxy Interface Membership Info
Open the IGMP Proxy Interface Membership Info Detailedpage.
Select the interface to display from the Interface drop-down menu.
Select the desired Multicast Group IP.
Detailed membership data for this interface and multicast group IP displays.
Displaying Detailed IGMP Proxy Interface Membership Info using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
IGMP Proxy Commands
Multicast
The Multicast menu page contains links to web pages that define and display Multicast parameters and data. To display this page, click IP Multicast® Multicast in the tree view. Following are the web pages accessible from this menu page:
Use the Multicast Global Configurationpage to configure the administrative status of Multicast Forwarding in the router, and to display global multicast parameters.
To display the page, click IP Multicast® Multicast® Global Configurationin the tree view.
Figure 13-16. Multicast Global Configuration
The Multicast Global Configuration page contains the following fields:
Admin Mode — Select Enable or Disable to set the administrative status of Multicast Forwarding in the router. The default is Disable.
Protocol State — The operational state of the multicast forwarding module.
Table Maximum Entry Count — The maximum number of entries in the IP Multicast routing table.
Number Of Packets For Which Source Not Found — The number of multicast packets that were supposed to be routed but which failed the RPF check.
Number Of Packets For Which Group Not Found — The number of multicast packets that were supposed to be routed but for which no multicast route was found.
Protocol — The multicast routing protocol presently activated on the router, if any.
Table Entry Count — The number of multicast route entries currently present in the Multicast route table.
Table Highest Entry Count — The highest number of multicast route entries that have been present in the Multicast route table.
The multicast global configuration is saved, and the device is updated.
Configuring/Displaying Multicast Forwarding Parameters using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Interface Configuration
Use the Multicast Interface Configurationpage to configure the TTL threshold of a multicast interface. You must configure at least one router interface before fields display on this page.
To display the page, click IP Multicast® Multicast® Interface Configurationin the tree view.
Figure 13-17. Multicast Interface Configuration
The Multicast Interface Configuration page contains the following fields:
Interface — Select the routing interface you want to configure from the drop-down menu.
TTL Threshold — Enter the TTL threshold below which a multicast data packet is not forwarded from the selected interface. Enter a number between 0 and 255. If you enter 0, all multicast packets for the selected interface are forwarded. You must configure at least one router interface before you can see this field.
Configuring a Multicast Interface
Open the Multicast Interface Configurationpage.
Select the interface to configure from the Interface drop-down menu.
Enter the desired TTL Threshold.
Click Apply Changes.
The multicast interface configuration is saved, and the device is updated.
Configuring a Multicast Interface using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Mroute Summary
Use the Multicast Mroute Summarypage to display MRoute data.
To display the page, click IP Multicast® Multicast® MRoute Summaryin the tree view.
Figure 13-18. Multicast Mroute Summary
The Multicast Mroute Summary page displays the following fields:
Source IP — The IP address of the multicast packet source that, combined with the Group IP, identifies an Mroute table entry.
Group IP — The destination group IP address.
Incoming Interface — The incoming interface on which multicast packets for this source/group arrive.
Outgoing Interfaces — The list of outgoing interfaces on which multicast packets for this source/group are forwarded.
Up Time (secs) — The time in seconds since the entry was created.
Expiry Time (secs) — The time in seconds before this entry ages out and is removed from the table.
RPF Neighbor — The IP address of the Reverse Path Forwarding neighbor.
Protocol — The multicast routing protocol which created this entry. The possibilities are:
PIM-DM
PIM-SM
DVMRP
Flags — The value displayed in this field is valid if the multicast routing protocol running is PIM-SM. The possible values are RPT or SPT. For other protocols an "------" is displayed.
Displaying MRoute Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Static Routes Configuration
Use the Multicast Static Routes Configurationpage to configure a new static entry in the Mroute table or to modify an existing entry.
To display the page, click IP Multicast® Multicast® Static Routes Configuration in the tree view.
The Multicast Static Routes Configuration page contains the following fields:
Source — Select Create Static Route to configure a new static entry in the Mroute table, or select one of the existing entries from the drop-down menu.
Source IP — Enter the IP Address that identifies the multicast packet source for the entry you are creating.
Source Mask — Enter the subnet mask to be applied to the Source IP address.
RPF Neighbor — Enter the IP address of the neighbor router on the path to the source.
Metric — Enter the link state cost of the path to the multicast source. The range is 0–255, and the default is 1. You can change the metric for a configured route by selecting the static route and editing this field.
Interface — Select the interface number from the drop-down menu. This is the interface that connects to the neighbor router for the given source IP address.
Configuring a Static Route
Open the Static Routespage.
Select Create Static Route in the Source field to configure a new static entry, or select one of
the existing entries.
Modify the remaining fields as needed.
Click Apply Changes.
The new or modified static route is saved, and the device is updated.
Configuring a Static Route the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Static Routes Summary
Use the Multicast Static Routes Summarypage to display static routes and their configurations.
To display the page, click IP Multicast® Multicast® Static Routes Summaryin the tree view.
Figure 13-20. Multicast Static Routes Summary
The Multicast Static Routes Summary page displays the following fields:
Source IP — The IP Address that identifies the multicast packet source for this route.
Source Mask — The subnet mask applied to the Source IP address.
RPF Address — The IP address of the RPF neighbor.
Metric — The link state cost of the path to the multicast source. The range is 0–255.
VLANID — The number of the incoming VLAN whose IP address is used as RPF for the given source IP address.
Displaying the Static Routes Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Admin Boundary Configuration
The definition of an administratively scoped boundary is a way to stop the ingress and egress of multicast traffic for a given range of multicast addresses on a given routing interface. Use the Multicast Admin Boundary Configurationpage to configure a new or existing administratively scoped boundary. To see this page, you must have configured a valid routing interface and multicast.
To display the page, click IP Multicast® Multicast® Admin Boundary Configurationin the tree view.
The Multicast Admin Boundary Configuration page contains the following fields:
Group — Select Create Boundary from the drop-down menu to create a new admin scope boundary, or select one of the existing boundary specifications to display or update its configuration.
Interface — Select the router interface for which the administratively scoped boundary is to be configured.
Group IP — Enter the multicast group address for the start of the range of addresses to be excluded. The address must be in the range of 239.0.0.0 through 239.255.255.255.
Group Mask — Enter the mask to be applied to the multicast group address. The combination of the mask and the Group IP gives the range of administratively scoped addresses for the selected interface.
Configuring an Admin Boundary
Open the Multicast Admin Boundary Configurationpage.
Select Create Boundary in the Group IP field to configure a new admin scope boundary, or
select one of the existing entries.
Modify the remaining fields as needed.
Click Apply Changes.
The new or modified admin scope boundary is saved, and the device is updated.
Configuring an Admin Boundary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
Multicast Admin Boundary Summary
Use the Multicast Admin Boundary Summarypage to display existing administratively scoped boundaries.
To display the page, click IP Multicast® Multicast® Admin Boundary Summaryin the tree view.
Figure 13-22. Multicast Admin Boundary Summary
The Multicast Admin Boundary Summary page displays the following fields:
Interface — The router interface to which the administratively scoped address range is applied.
Group IP — The multicast group address for the start of the range of addresses to be excluded.
Group Mask — The mask that is applied to the multicast group address. The combination of the mask and the Group IP gives the range of administratively scoped addresses for the selected interface.
Displaying the Multicast Admin Boundary Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
Multicast Commands
PIM-DM
PIM-DM protocol is a simple, protocol-independent multicast routing protocol. It uses an existing Unicast routing table and a Join/Prune/Graft mechanism to build a tree. PIM-DM creates source-based shortest-path distribution trees that make use of RPF. It cannot be used to build a shared distribution tree, as is the case in PIM-SM. PIM-DM assumes that when a sender starts sending data, all downstream routers and hosts want to receive a multicast datagram. PIM-DM initially floods multicast traffic throughout the network. Routers that do not have any downstream neighbors prune back the unwanted traffic. In addition to PRUNE messages, PIM-DM makes use of graft and assert messages. Graft messages are used whenever a new host wants to join the group. Assert messages are used to shutoff duplicate flows on the same multi-access network.
There are two versions of PIM-DM. Version 2 doesn't use the IGMP message; instead, it uses a message that is encapsulated in IP package, with protocol number 103. In Version 2, Hello message is introduced in place of query message.
PIM-DM is appropriate for:
Densely distributed receivers
Few senders -to- many receivers (due to frequent flooding)
High volume of multicast traffic
Constant stream of traffic
The PIM-DM menu page contains links to web pages that define and display PIM-DM parameters and data. To display this page, click IP Multicast® PIM-DM in the tree view.
Following are the web pages accessible from this menu page:
Use the PIM-DM Global Configurationpage to configure the administrative status of PIM-DM on this system.
To display the page, click IP Multicast® PIM-DM® Global Configurationin the tree view.
Figure 13-23. PIM-DM Global Configuration
The PIM-DM Global Configuration page contains the following field:
Admin Mode — Select Enable or Disable from the drop-down menu to set the administrative status of PIM-DM on the system. The default is Disable.
Configuring PIM-DM
Open the PIM-DM Global Configurationpage.
Set Admin Mode to Enable or Disable, to turn PIM-DM on or off.
Click Apply Changes.
The PIM-DM configuration is saved, and the device is updated.
Configuring PIM-DM using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-DM Commands
PIM-DM Interface Configuration
Use the PIM-DM Interface Configurationpage to configure specific interfaces with PIM-DM. PIM-DM must be enabled on the PIM-DM Global Configurationpage for this interface configuration page to display.
To display the page, click IP Multicast® PIM-DM® Interface Configurationin the tree view.
Figure 13-24. PIM-DM Interface Configuration
The PIM-DM Interface Configuration page contains the following fields:
Interface — Select the interface for which data is to be displayed or configured. You must have configured at least one router interface before configuring or displaying data for a PIM-DM interface, otherwise an error message is displayed.
Interface Mode — Select Enable or Disable from the drop-down menu to set the administrative status of PIM-DM for the selected interface. The default is Disable.
Hello Interval (secs) — Enter the number of seconds between PIM hello messages transmitted from the selected interface. The default value is 30. Valid values are from 10 to 3600.
Configuring PIM-DM for an Interface
Open the PIM-DM Interface Configurationpage.
Select the interface to configure from the Interface field.
Modify the remaining fields as needed.
Click Apply Changes.
The interface configuration is saved, and the device is updated.
Configuring PIM-DM for an Interface using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
PIM-DM Commands
PIM-DM Interface Summary
Use the PIM-DM Interface Summarypage to display a PIM-DM interface and its settings. At least one interface on this router must be set up as PIM-DM for this page to display.
To display the page, click IP Multicast® PIM-DM® Interface Summaryin the tree view.
Figure 13-25. PIM-DM Interface Summary
The PIM-DM Interface Summary page contains the following fields:
Interface — Select the interface for which data is to be displayed. There must be configured at least one router interface before displaying data for a PIM-DM interface, otherwise an error message displays.
Interface Parameters
Interface Mode — Displays the administrative status of PIM-DM for the selected interface. The default is Disable.
Protocol State — The operational state of the PIM-DM protocol on this interface.
Hello Interval (secs) — The frequency at which PIM hello messages are transmitted on the selected interface.
IP Address — The IP address of the selected interface.
Interface Statistics
Neighbor Count — The number of PIM neighbors on the selected interface.
Designated Router — The designated router on the selected PIM interface. For point-to-point interfaces, this is 0.0.0.0.
Interface Neighbors
Neighbor IP — The IP address of the PIM neighbor for which this entry contains information.
Up Time (hh:mm:ss) — The time since this PIM neighbor (last) became a neighbor of the local router.
Expiry Time (hh:mm:ss) — The minimum time remaining before this PIM neighbor is aged out.
Displaying PIM-DM Interface Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-DM Commands
PIM-SM
PIM-SM is used to efficiently route multicast traffic to multicast groups that may span wide area networks and where bandwidth is a constraint. PIM-SM uses shared trees by default and implements source-based trees for efficiency. This data threshold rate is used to toggle between trees. PIM-SM assumes that no hosts want the multicast traffic unless they specifically ask for it. It creates a shared distribution tree centered on a defined rendezvous point (RP) from which source traffic is relayed to the receivers. Senders first send the multicast data to the RP, which in turn sends the data down the shared tree to the receivers. Shared trees centered on a RP do not necessarily provide the shortest/optimal path. In such cases, PIM-SM provides a means to switch to more efficient source-specific trees.
The PIM-SM menu page contains links to web pages that define and display PIM-SM parameters and data. To display this page, click IP Multicast® PIM-SM in the tree view.
Following are the web pages accessible from this menu page:
Use the PIM-SM Global Configurationpage to configure global PIM-SM settings for this system.
To display the page, click Multicast® PIM-SM® Global Configurationin the tree view.
Figure 13-26. PIM-SM Global Configuration
The PIM-SM Global Configuration page contains the following fields:
Admin Mode — Select Enable or Disable from the drop-down menu to set the administrative status of PIM-SM on the system. You must enable IGMP before enabling PIM-SM. The default is Disable.
Join/Prune Interval (secs) — Enter the interval between the transmission of PIM-SM Join/Prune messages. The valid values are from 10 to 3600 secs. The default value is 60.
Data Threshold Rate (Kbps) — Enter the minimum source data rate in K bits/second above which the last-hop router switches to a source-specific shortest path tree. The valid values are from 0 to 2000 K bits/sec. The default value is 50.
Register Threshold Rate (Kbps) — Enter the minimum source data rate in K bits/second above which the Rendezvous Point router switches to a source-specific shortest path tree. The valid values are from 0 to 2000 K bits/sec. The default value is 50.
Configuring PIM-SM
Open the PIM-SM Global Configurationpage.
Set Admin Mode to Enable or Disable, to turn PIM-SM on or off.
Modify the remaining fields as needed.
Click Apply Changes.
The interface configuration is saved, and the device is updated.
Configuring PIM-SM using the CLI Command
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
PIM-SM Global Status
Use the PIM-SM Global Statuspage to display the global settings selected on the PIM-SM Global Configuration page.
To display the page, click Multicast® PIM-SM® Global Statusin the tree view.
Figure 13-27. PIM-SM Global Status
The PIM-SM Global Status page displays the following fields:
Admin Mode — The administrative status of PIM-SM in the router: either Enable or Disable.
Join/Prune Interval (secs) — The interval between the transmission of PIM-SM Join/Prune messages.
Data Threshold Rate (Kbps) — The minimum source data rate in K bits/second above which the last-hop router switches to a source-specific shortest path tree.
Register Threshold Rate (Kbps) — The minimum source data rate in K bits/second above which the Rendezvous Point router switches to a source-specific shortest path tree.
Displaying PIM-SM Global Status using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
PIM-SM Interface Configuration
Use the PIM-SM Interface Configurationpage to configure PIM-SM for an interface. PIM-SM must be enabled on the PIM-SM Global Configurationpage for this interface configuration page to display.
To display the page, click Multicast® PIM-SM® Interface Configurationin the tree view.
Figure 13-28. PIM-SM Interface Configuration
The PIM-SM Interface Configuration page contains the following fields:
Interface — Select the interface for which data is to be displayed or configured. At least one routing interface must exist in order to display or configure data.
Mode — Select Enable or Disable from the drop-down menu to set the administrative status of PIM-SM on this interface. The default is Disable.
Hello Interval (secs) — Enter the time in seconds between the transmission of which PIM Hello messages on this interface. The valid values are from 10 to 3600 secs. The default value is 30.
CBSR Preference — Enter the preference value for the local interface as a candidate bootstrap router. The value of -1 is used to indicate that the local interface is not a candidate BSR interface. The valid values are from -1 to 255. The default value is 0.
CBSR Hash Mask Length — Enter the CBSR hash mask length to be advertised in bootstrap messages if this interface is elected as the bootstrap router. This hash mask length is used in the hash algorithm for selecting the RP for a particular group. The valid values are from 0 to 32. The default value is 30.
CRP Preference — Enter the preference value for the local interface as a candidate bootstrap router. The value of -1 is used to indicate that the local interface is not a candidate BSR interface. The valid values are from -1 to 255. The default value is 0.
Configuring PIM-SM for an Interface
Open the PIM-SM Interface Configurationpage.
Select the interface to configure from the Interface field.
Select Enable from the Mode field.
Modify the remaining fields as needed.
Click Apply Changes.
The interface configuration is saved, and the device is updated.
Configuring PIM-SM for an Interface using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
PIM-SM Interface Summary
Use the PIM-SM Interface Summarypage to display a PIM-SM interface and its settings. At least one interface on this router must be set up as PIM-SM for this page to display.
To display the page, click Multicast® PIM-SM® Interface Summaryin the tree view.
Figure 13-29. PIM-SM Interface Summary
The PIM-SM Interface Summary page displays the following fields:
Interface — Select the interface for which data is to be displayed.
Mode — The administrative status of PIM-SM in the router: either Enable or Disable.
Protocol State — The operational state of the PIM-SM protocol on the selected interface, either Operational or Non-operational.
IP Address — The IP address of the selected PIM interface.
Net Mask — The network mask for the IP address of the selected PIM interface.
Designated Router — The Designated Router on the selected PIM interface. For point-to- point interfaces, this object has the value 0.0.0.0.
Hello Interval (secs) — The frequency at which PIM Hello messages are transmitted on the selected interface.
CBSR Preference — The preference value for the local interface as a candidate bootstrap router. The value of -1 is used to indicate that the local interface is not a candidate BSR interface.
CBSR Hash Mask Length — The CBSR hash mask length to be advertised in bootstrap messages if this interface is elected as the bootstrap router. This hash mask length is used in the hash algorithm for selecting the RP for a particular group.
CRP Preference — The preference value for the local interface as a candidate bootstrap router. The value of -1 is used to indicate that the local interface is not a candidate BSR interface.
Neighbor Count — The number of PIM neighbors on the selected interface.
IP Address — The IP address of the PIM neighbor for this entry.
Up Time (hh:mm:ss) — The time since this PIM neighbor (last) became a neighbor of the local router.
Expiry Time (hh:mm:ss) — The minimum time remaining before this PIM neighbor is aged out.
Displaying PIM-SM Interface Summary
Open the PIM-SM Interface Summarypage.
Select the interface to display from the Interface drop-down menu.
PIM-SM configuration data for this interface displays.
Displaying PIM-SM Interface Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
Component Summary
Use the Component Summarypage to display PIM-SM component data.
To display the page, click Multicast® PIM-SM® Component Summaryin the tree view.
Figure 13-30. Component Summary
The Component Summary page displays the following fields:
Component Index — Unique number identifying the component index.
Component BSR Address — The IP address of the bootstrap router (BSR) for the local PIM region.
Component BSR Expiry Time (hh:mm:ss) — The minimum time remaining before the bootstrap router in the local domain is declared.
Component CRP Hold Time (hh:mm:ss) — The hold time of the component when it is a candidate Rendezvous Point in the local domain.
Displaying PIM-SM Component Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
RP Set Summary
Use the PIM-SM RP Set Summarypage to display the static RP information for the PIM-SM router.
To display the page, click Multicast® PIM-SM® RP Set Summaryin the tree view.
Figure 13-31. PIM-SM RP Set Summary
The PIM-SM RP Set Summary page displays the following fields in a table:
Group Address — Displays IP multicast group address.
Group Mask — Displays Multicast group address mask.
Address — Displays IP address of the Candidate-RP.
Hold Time (hh:mm:ss) — The holdtime of a Candidate-RP. If the local router is not the BSR, this value is 0.
Expiry Time (hh:mm:ss) — The minimum time remaining before the Candidate-RP is declared down.
Component — A number which uniquely identifies the component. Each protocol instance connected to a separate domain should have a different index value.
Displaying RP Set Summary using the CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
Candidate RP Summary
Use the PIM-SM Candidate RP Summarypage to display PIM information for candidate Rendezvous Points (RPs) for each IP multicast group.
To display the page, click Multicast® PIM-SM® Candidate RP Summaryin the tree view.
Figure 13-32. PIM-SM Candidate RP Summary
The PIM-SM Candidate RP Summary page displays the following fields in a table:
Group Address — The group address transmitted in Candidate-RP-Advertisements.
Group Mask — The group address mask transmitted in Candidate-RP-Advertisements to fully identify the scope of the group which the router supports if elected as a Rendezvous Point.
Address — Displays the unicast address of the interface which is advertised as a Candidate RP.
Displaying PIM-SM Candidate RP Summary using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
PIM-SM Commands
Static RP Configuration
Use the Static RP Configurationpage to create the specified static RP IP Address for the PIM-SM router.
To display the page, click Multicast® PIM-SM® Static RP Configurationin the tree view.
Figure 13-33. Static RP Configuration
The Static RP Configuration page contains the following fields:
IP Address — IP Address of the RP to be created.
Group — Group Address of the RP to be created.
Group Mask — Group IP Mask of the RP to be created.
Existing configurations display in a table at the bottom of the page.
Configuring Static RP
Open the Static RP Configurationpage.
Enter the IP Address, the IP address for the Group, and the Group Mask for the static RP
configuration.
Click Apply Changes.
The specified static RP IP Address for the PIM-SM router is created, and the device is updated.
Configuring Static RP using the CLI Command
For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide:
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