Brocade Multi-Service IronWare Multicast Configuration Guide (Supporting R05.6.00) - Manual (Page 148)

136 Multi-Service IronWare Multicast Configuration Guide
53-1003032-02
IP multicast traffic reduction
1
Syntax: show ip multicast vlan
The number of cam-indices allocated for the entry on an LP depends upon the number of PPCRs on
which the VLAN has member ports.
The vlan vlan-id parameter displays IP multicast VLAN information for a specified VLAN.
Table 28 describes the output parameters of the show ip multicast vlan command.
Static IGMP membership
When configuring a static IGMP membership, you have two options:
The multicast static-group uplink command which sends the traffic to the router, and saves a port.
The multicast static-group group-address port-list command is for downstream traffic and uses a
port.
Configuring a multicast static group uplink per VLAN
When the multicast static-group uplink command is enabled on a snooping VLAN, the snooping
device behaves like an IGMP host on ports connected to the multicast router. The snooping device
will respond to IGMP queries from the uplink multicast PIM router for the groups and sources
configured. Upon the multicast router receiving the IGMP join message, it will initiate the PIM join
on its upstream path towards the source to pull the source traffic down. The source traffic will stop
at the IGMP snooping device. The traffic will then be forwarded to the multicast receiver and router
ports or dropped in hardware if no other multicast receiver and routers are present in the VLAN.
TABLE 28 Output parameters of the show ip multicast vlan command
Field Description
VLAN Shows the ID of the configured VLAN.
State Shows whether the VLAN interface is enabled or disabled.
Mode Shows whether the VLAN interface is in active mode or passive mode.
Active Querier Shows the active IGMP querier for the VLAN.
Time Query Shows the time countdown to generate the next query message.
(*, G)Count Shows the count of (*,G) entries.
(S, G)Count Shows the count of (S,G) entries.
Flags Shows the flags of the outgoing interface.
V2|V3 Shows the version of the IGMP message received.
P_G Indicates that a PIM (*,G) join was received on that interface.
P_SG Indicates that a PIM (S,G) join was received on that interface.
NumOIF Show the count of the outgoing interface.
profile Shows the profile ID associated with the stream.
Outgoing Interfaces Shows the list of outgoing interfaces.
FID Shows the FID resource allocated for a particular entry.
MVID Shows the MVID resource allocated for a particular entry.