This command adds an administrative scope multicast boundary specified by <groupipaddr> and <mask> for which this multicast administrative boundary is applicable. <groupipaddr> is a group IP address and <mask> is a group IP mask.
Format: ipmcast boundary <groupipaddr> <mask>
Mode: Interface Config
no ip mcast boundary
This command deletes an administrative scope multicast boundary specified by <groupipaddr> and <mask> for which this multicast administrative boundary is applicable. <groupipaddr> is a group IP address and <mask> is a group IP mask.
Format: no ipmcast boundary <groupipaddr> <mask>
Mode: Interface Config
ip multicast
This command sets the administrative mode of the IP multicast forwarder in the router to active. For multicast routing to become operational, IGMP must be currently enabled. An error message will be displayed on the CLI if multicast routing is enabled while IGMP is disabled. However, the IP multicast mode configuration is stored in the multicast configuration file and is automatically enabled once IGMP is enabled.
Default: disabled
Format: ip multicast Mode
Mode: Global Config
no ip multicast
This command sets the administrative mode of the IP multicast forwarder in the router to inactive. For multicast routing to become operational, IGMP must be currently enabled. An error message will be displayed on the CLI if multicast routing is enabled while IGMP is disabled. However, the IP multicast mode configuration is stored in the multicast configuration file and is automatically enabled once IGMP is enabled.
Format: no ip multicast
Mode: Global Config
ip multicast ttl-threshold
This command is specific to IPv4. Use this command to apply the given Time-to-Live threshold value to a routing interface or range of interfaces. The ttl-threshold is the TTL threshold which is to be applied to the multicast Data packets which are to be forwarded from the interface. This command sets the Time-to-Live threshold value such that any data packets forwarded over the interface having TTL value above the configured value are dropped. The value for ttl-threshold ranges from 0 to 255.
Default: 1
Format: ip multicast ttl-threshold ttlvalue
Mode: Interface Config
no ip multicast ttl-threshold
This command applies the default ttl-threshold to a routing interface. The ttl-threshold is the TTL threshold which is to be applied to the multicast Data packets which are to be forwarded from the interface.
Format: no ip multicast ttl-threshold
Mode: Interface Config
no ip mcast mroute
Use this command to clear entries in the mroute table. Use the all parameter to clear all entries. Use the source parameter to clear the routes in the mroute table entries containing the specified <sourceipaddr> or <sourceipaddr> [groupipaddr] pair. The source address is the source IP address of the multicast packet. The group address is the Group Destination IP address of the multicast packet. Use the group parameter to clear the routes in the mroute table entries containing the specified <groupipaddr>. The group address is the Group Destination IP address of the multicast packet.
Default: none
Format: no ip mcast mroute {group <groupipaddr> | source <sourceipaddr> [<groupipaddr>] | all}
Mode: Global Config
show ip mcast
This command displays the system-wide multicast information.
Format: show ip mcast
Modes: Privileged EXEC and Use EXEC
Admin Mode: The administrative status of multicast.
Protocol State: The current state of the multicast protocol. Possible values are Operational or Non-Operational.
Table Max Size: The maximum number of entries allowed in the multicast table.
Number Of Packets For Which Source Not Found: The number of packets for which the source is not found.
Number Of Packets For Which Group Not Found: The number of packets for which the group is not found.
Protocol: The multicast protocol running on the router.
Entry Count: The number of entries in the multicast table.
Highest Entry Count: The highest entry count in the multicast table.
show ip mcast boundary
This command displays all the configured administrative scoped multicast boundaries.
Format: show ip mcast boundary {<unit/slot/port> | all}
Modes: Privileged EXEC and User EXEC
Interface: Valid slot and port number separated by a forward slash.
Group Ip: The group IP address
Mask: The group IP mask
show ip mcast interface
This command displays the multicast information for the specified interface.
Format: show ip mcast interface <unit/slot/port>
Modes: Privileged EXEC and User EXEC
Interface: Valid slot and port number separated by a forward slash.
TTL: The time-to-live value for this interface.
show ip mcast mroute
This command displays a summary or all the details of the multicast table.
Format: show ip mcast mroute {detail | summary}
Modes: Privileged EXEC
User: EXEC
If you use the detail parameter, the command displays the following fields:
Source IP Addr: The IP address of the multicast data source.
Group IP Addr: The IP address of the destination of the multicast packet.
Expiry Time: The time of expiry of this entry in seconds.
Up Time: The time elapsed since the entry was created in seconds.
RPF Neighbor: The IP address of the RPF neighbor.
Flags: The flags associated with this entry.
If you use the summary parameter, the command displays the following fields:
Source IP Addr: The IP address of the multicast data source.
Group IP Addr: The IP address of the destination of the multicast packet.
Protocol: The multicast routing protocol by which the entry was created.
Incoming Interface: The interface on which the packet for the source/group arrives.
Outgoing Interface List: The list of outgoing interfaces on which the packet is forwarded.
show ip mcast mroute group
This command displays the multicast configuration settings such as flags, timer settings, incoming and outgoing interfaces, RPF neighboring routers, and expiration times of all the entries in the multicast mroute table containing the given <groupipaddr>.
Format: show ip mcast mroute group <groupipaddr> {detail |summary}
Modes: Privileged EXEC and User EXEC
Source IP Addr: The IP address of the multicast data source.
Group IP Addr: The IP address of the destination of the multicast packet.
Protocol: The multicast routing protocol by which this entry was created.
Incoming Interface: The interface on which the packet for this group arrives.
Outgoing Interface List: The list of outgoing interfaces on which this packet is forwarded.
show ip mcast mroute source
This command displays the multicast configuration settings such as flags, timer settings, incoming and outgoing interfaces, RPF neighboring routers, and expiration times of all the entries in the multicast mroute table containing the given source IP address or source IP address and group IP address pair.
Format: show ip mcast mroute source <sourceipaddr> {summary | <groupipaddr>}
Modes: Privileged EXEC User EXEC
If you use the <groupipaddr> parameter, the command displays the following column headings in the output table:
Source IP Addr: The IP address of the multicast data source.
Group IP Addr: The IP address of the destination of the multicast packet.
Expiry Time: The time of expiry of this entry in seconds.
Up Time: The time elapsed since the entry was created in seconds.
RPF Neighbor: The IP address of the RPF neighbor.
Flags: The flags associated with this entry.
If you use the summary parameter, the command displays the following column headings in the output table:
Source IP Addr: The IP address of the multicast data source.
Group IP Addr: The IP address of the destination of the multicast packet.
Protocol: The multicast routing protocol by which this entry was created.
Incoming Interface: The interface on which the packet for this source arrives.
Outgoing Interface List: The list of outgoing interfaces on which this packet is forwarded.
show ip mcast mroute static
This command displays all the static routes configured in the static mcast table if is specified or displays the static route associated with the particular <sourceipaddr>.
Format: show ip mcast mroute static [<sourceipaddr>]
Modes: Privileged EXEC User EXEC
Source Address: The IP address of the multicast packet source.
Source Mask: The mask applied to the IP address of the multicast packet source.
RPF Address: The IP address to be used as RPF for the given source and mask.
Metric: The metric value corresponding to the source address.
Interface: Valid slot and port number separated by a forward slash.
show mrinfo
This command is used to display the neighbor information of a multicast-capable router from the results buffer pool of the router subsequent to the execution/completion of a mrinfo [ipaddr] command. The results subsequent to the completion of the latest mrinfo will be available in the buffer pool after a maximum duration of two minutes after the completion of the show mrinfo command. A subsequent issue mrinfo overwrites the contents of the buffer pool with fresh results.
Default: none
Format: show mrinfo
Mode: Privileged EXEC
Router Interface: The IP address of this neighbor
Neighbor: The neighbor associated with the router interface
Metric: The metric value associated with this neighbor
TTL: The TTL threshold associated with this neighbor
