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BigIron RX Series Configuration Guide
53-1001810-01
Configuring IP multicast traffic reduction
23
NOTE
When one or more device devices are running Layer 2 IP Multicast Traffic reduction, configure one
of the devices for active IGMP and leave the other devices configured for passive IGMP. However, if
the IP multicast domain contains a multicast-capable, configure all the device devices for passive
IGMP and allow the to actively send the IGMP queries.
NOTE
A router-id is required if a virtual interface (ve) or IP is not configured for IGMP snooping to work.
To enable IP Multicast Traffic Reduction, enter the following command.
BigIron RX(config)# ip multicast active
Syntax: [no] ip multicast active | passive
When you enable IP multicast on a device, all ports on the device are configured for IGMP.
If you are using active IGMP, all ports can send IGMP queries and receive IGMP reports. If you are
using passive IGMP, all ports can receive IGMP queries.
IP Multicast Traffic Reduction cannot be disabled on individual ports of a device. IP Multicast Traffic
Reduction must can be disabled globally by entering the no ip multicast command.
NOTE
If the "route-only" feature is enabled on the device, then IP Multicast Traffic Reduction will not be
supported.
To verify that IP Multicast Traffic Reduction is enabled, enter the following command at any level of
the CLI.
BigIron RX(config)# show ip multicast
IP multicast is enabled - Active
Syntax: show ip multicast
Configuring the IGMP mode per VLAN
NOTE
A router-id is required if a virtual interface (ve) or IP is not configured for IGMP snooping to work.
If the IP Multicast command is not applied globally as described in
“Enabling IP multicast traffic
reduction”
on page 653, you can apply it to individual VLANs instances within their configurations.
In the following example, multicast traffic reduction is applied using IGMP snooping to VLAN 2.
(config)# vlan 2
(config-vlan-2)# multicast passive
Syntax: [no] multicast active | passive
When you enable IP multicast for a specific VLAN instance, IGMP snooping is enabled. The device
uses IGMP to maintain a table of the Group Membership reports received by the device for the
specified VLAN instance. You can use active or passive IGMP mode. There is no default mode.
•
Active – When active IGMP mode is enabled, the switch actively sends out IGMP queries to
identify IP multicast groups within the VLAN instance and makes entries in the IGMP table
based on the Group Membership reports received from the network.
Summary of Contents for Brocade DCX
Page 40: ...xl BigIron RX Series Configuration Guide 53 1001810 01 ...
Page 72: ...lxxii BigIron RX Series Configuration Guide 53 1001810 01 ...
Page 88: ...16 BigIron RX Series Configuration Guide 53 1001810 01 Searching and filtering output 1 ...
Page 300: ...228 BigIron RX Series Configuration Guide 53 1001810 01 Displaying IP information 7 ...
Page 318: ...246 BigIron RX Series Configuration Guide 53 1001810 01 Deploying a LAG 8 ...
Page 418: ...346 BigIron RX Series Configuration Guide 53 1001810 01 SuperSpan 12 ...
Page 482: ...410 BigIron RX Series Configuration Guide 53 1001810 01 MRP CLI example 14 ...
Page 506: ...434 BigIron RX Series Configuration Guide 53 1001810 01 Displaying VSRP information 15 ...
Page 582: ...510 BigIron RX Series Configuration Guide 53 1001810 01 Viewing Layer 2 ACLs 20 ...
Page 634: ...562 BigIron RX Series Configuration Guide 53 1001810 01 Troubleshooting ACLs 21 ...
Page 642: ...570 BigIron RX Series Configuration Guide 53 1001810 01 Trunk formation 22 ...
Page 746: ...674 BigIron RX Series Configuration Guide 53 1001810 01 Displaying RIP filters 24 ...
Page 808: ...736 BigIron RX Series Configuration Guide 53 1001810 01 Displaying OSPF information 25 ...
Page 938: ...866 BigIron RX Series Configuration Guide 53 1001810 01 Displaying MBGP information 27 ...
Page 950: ...878 BigIron RX Series Configuration Guide 53 1001810 01 Using secure copy 28 ...
Page 988: ...916 BigIron RX Series Configuration Guide 53 1001810 01 Clearing IS IS information 29 ...
Page 1054: ...982 BigIron RX Series Configuration Guide 53 1001810 01 Sample 802 1x configurations 33 ...
Page 1108: ...1036 BigIron RX Series Configuration Guide 53 1001810 01 sFlow 39 ...
Page 1190: ...1118 BigIron RX Series Configuration Guide 53 1001810 01 Displaying RIPng information 44 ...
Page 1270: ...1198 BigIron RX Series Configuration Guide 53 1001810 01 Displaying ACLs 47 ...
Page 1310: ...1238 BigIron RX Series Configuration Guide 53 1001810 01 Displaying OSPFv3 information 48 ...
Page 1382: ...1310 BigIron RX Series Configuration Guide 53 1001810 01 Commands That Require a Reload D ...
Page 1435: ...BigIron RX Series Configuration Guide 1363 53 1001810 01 VSRP E ...
Page 1436: ...1364 BigIron RX Series Configuration Guide 53 1001810 01 VSRP E ...