Configuration Guide User guide

1592 FastIron Configuration Guide
53-1002494-02
Disabling CPU processing for select multicast groups
CLI command syntax to disable CPU processing
To disable CPU processing for selective multicast groups, enter commands such as the following.
Brocade# config t
Brocade(config)# vlan 5
Brocade(config-vlan-5)# disable multicast-to-cpu 224.0.0.5
Brocade(config-vlan-5)# disable multicast-to-cpu 224.0.0.14 224.0.0.230
Brocade(config-vlan-5)# vlan 10
Brocade(config-vlan-10)# disable multicast-to-cpu 224.0.0.23
Brocade(config-vlan-10)# vlan 20
Brocade(config-vlan-20)# disable multicast-to-cpu 224.0.0.50 224.0.0.140
Syntax: [no] disable multicast-to-cpu <multicast group address> [<multicast group range end
address>]
The <multicast group address> must be in the range 224.0.0.1 - 224.0.0.254, but cannot be one
of the reserved multicast addresses listed in Table 269 on page 1591.
Viewing disabled multicast addresses
To display disabled multicast addresses for all configured VLANs, enter the show
disabled-multicast-to-cpu command. The following shows an example display.
To display disabled multicast addresses for a particular VLAN, include the VLAN ID with the show
disabled-multicast-to-cpu command. The following shows an example display
.
224.0.0.6 OSPF
224.0.0.9 RIP V2
224.0.0.13 PIM V2
224.0.0.18 VRRP
224.0.0.22 IGMP V3 reports
TABLE 269 Reserved multicast addresses (Continued)
Multicast address Reserved for...
Brocade# show disabled-multicast-to-cpu
Disabled multicast addresses to cpu for PORT-VLAN 5 :
224.0.0.5
224.0.0.14 to 224.0.0.230
Disabled multicast addresses to cpu for PORT-VLAN 10 :
224.0.0.23
Disabled multicast addresses to cpu for PORT-VLAN 20 :
224.0.0.50 to 224.0.0.140
Brocade# show disabled-multicast-to-cpu 5
Disabled multicast addresses to cpu for PORT-VLAN 5 :
224.0.0.5
224.0.0.14 to 224.0.0.230