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This chapter describes the function and displays the syntax for multicast distributed switching commands. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Switching Services Command Reference.
To clear all routes from a line card's MFIB table and resynchronize it with the RP, use the clear ip mds forwarding EXEC command.
clear ip mds forwardingTo clear all line card counts or packet counts, use the clear ip pim interface count EXEC command.
clear ip pim interface countTo configure IP multicast fast switching or multicast distributed switching (MDS), use the ip mroute-cache interface configuration command. To disable either of these features, use the no form of this command.
ip mroute-cache [distributed]
distributed | (Optional) Enables MDS on the interface. In the case of RSP, this keyword is optional; if it is omitted, fast switching occurs. On the GSR, this keyword is required because the GSR does only distributed switching. |
To enable IP multicast routing or multicast distributed switching (MDS), use the ip multicast-routing global configuration command. To disable IP multicast routing and MDS, use the no form of this command.
ip multicast-routing [distributed]
distributed | (Optional) Enables MDS. |
To display numbers of packets that were process switched, fast switched, and distributed switched, use the show interface stats EXEC command.
show interface type number stats
type number | Interface type and number about which to display statistics. |
To display the contents of the IP multicast fast-switching cache, use the show ip mcache EXEC command.
show ip mcache [group [source]]
group | (Optional) Displays the fast-switching cache for the single group. The group argument can be either a Class D IP address or a DNS name. |
source | (Optional) If source is also specified, displays a single multicast cache entry. The source argument can be either a unicast IP address or a DNS name. |
On a line card, to display the MFIB table and forwarding information for multicast distributed switching (MDS), use the show ip mds forwarding EXEC command.
show ip mds forwarding [group-address] [source-address]
group-address | (Optional) Address of the IP multicast group for which to display the MFIB table. |
source-address | (Optional) Address of the source of IP multicast packets for which to display the MFIB table. |
To display the status of multicast distributed switching (MDS) interfaces, use the show ip mds interface EXEC command.
show ip mds interfaceTo display switching statistics or line card statistics for multicast distributed switching (MDS), use the show ip mds stats EXEC command.
show ip mds stats [switching | linecard]To display a summary of the MFIB table for multicast distributed switching (MDS), use the show ip mds summary EXEC command.
show ip mds summaryTo display switching counts for multicast distributed switching (MDS) and other fast switching statistics, use the show ip pim interface count EXEC command.
show ip pim interface [type number] count
type number | (Optional) Interface type and number. If these arguments are specified, information is displayed about that interface only. |
Posted: Mon Feb 8 14:01:01 PST 1999
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