As shown in Case Study: When the Multicast Performance of a Device Is Tested, a Few Packets Are Lost Two Minutes After the Multicast Service Is Enabled, the Device is connected to the multicast server on one end and to a user on the other end. There are a large number of multicast ent...
If a switch does not have a router port, IGMP Report packets cannot be forwarded. You can run the igmp-snooping static-router-port vlan { vlan-id1 [ to vlan-id2 ] } &<1-10> command in the interface view to configure the interface as a static router port in a specified VLAN.How ...
or if the RP is not on the SPT tree, the FHR periodically sends PIM null register messages. The FHR sends a PIM register with the Null-Register flag set, but without any data. This special PIM register notifies the RP that a multicast source is still sending, in case any new recei...
There are other reasons to transition from an RPT to an SPT, even if the SPT is actually longer than the RPT. An RP might become quite busy, and the shortest path might not be optimal as determined by unicast routing protocols. A lot of multicast discussion at ISPs involves issues such ...
Switch(config-if)#ip pim spt-threshold infinity Cause 2 When you use theip igmp join-group <group-name>command on any interface(s), it does process switching. If multicast packets are process switched on any interface(s), it consumes more CPU as it mandates process switching of all packet...
When you enable multicast mode on the controller, you must also configure a CAPWAP multicast group address. APs subscribe to the CAPWAP multicast group with the use of IGMP. APs in monitor mode, sniffer mode, or rogue detector mode do not join the CAPWAP multicast group address. ...
Although each path from the RP to a receiver is the shortest path, the shortest path from the source to the receivers is not the same as the path from the receiver to the RP. A legitimate question is: Why not use the SPT rather than the RPT? For PIM-SM, there are two answers. Fi...
switch# clear ip multicast <vrf [vrf-name]> counters <group_addr> Limitations This feature has the following limitations: Counters are not supported on fastdrop multicast routes. For PIM sparse mode, counters are supported only on (Source_addr, Group_addr) multicast routes. Counting is support...
l MAC multicast group: The multicast group is identified with MAC multicast address and maintained by the Ethernet switch. l Router port aging time: Time set on the router port aging timer. If the switch has not received any IGMP general query message when the timer times out, it considers...
switch the IP multicasts at switch speed. If non-Cisco routers are using multicast, say withDistance Vector Multicast Routing Protocol (DVMRP), then although Cisco does notfullysupport DVMRP, the router will 'proxy' for these other routers and feed this information into the switches configured ...