3Com 7700 Configuration Manual page 146

138 C 6: M
HAPTER ULTICAST
P
ROTOCOL
[SW7700] vlan 12
[SW7700-vlan12] port Ethernet 1/0/6 to Ethernet 1/0/7
[SW7700-vlan12] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 12
[SW7700-vlan-interface12] pim sm
[SW7700-vlan-interface12] quit
2 Configure the threshold for multicast group to switch from shared tree to the STP
as 10kbps.
[SW7700] acl number 5
[SW7700-acl-basic-5] rule permit source 225.0.0.1 0.255.255.255
[SW7700] pim
[SW7700-pim] spt-switch-threshold 10 group-policy 5
Configure LS_B:
1 Enable PIM-SM.
[SW7700] multicast routing-enable
[SW7700] vlan 10
[SW7700-vlan10] port Ethernet 1/0/2 to Ethernet 1/0/3
[SW7700-vlan10] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 10
[SW7700-vlan-interface10] pim sm
[SW7700-vlan-interface10] quit
[SW7700] vlan 11
[SW7700-vlan11] port Ethernet 1/0/4 to Ethernet 1/0/5
[SW7700-vlan11] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 11
[SW7700-vlan-interface11] pim sm
[SW7700-vlan-interface11] quit
[SW7700] vlan 12
[SW7700-vlan12] port Ethernet 1/0/6 to Ethernet 1/0/7
[SW7700-vlan12] quit
[SW7700] pim
[SW7700-pim] interface vlan-interface 12
[SW7700-vlan-interface12] pim sm
[SW7700-vlan-interface12] quit
2 Configure the C-BSR.
[SW7700] pim
[SW7700-pim] c-bsr vlan-interface 10 30 2
3 Configure the C-RP.
[SW7700] acl number 5
[SW7700-acl-basic-5] rule permit source 225.0.0.0 0.255.255.255
[SW7700] pim
[SW7700-pim] c-rp vlan-interface 10 group-list 5
4 Configure PIM domain border.
[SW7700] interface vlan-interface 12
[SW7700-vlan-interface12] pim bsr-boundary
After VLAN-interface 12 is configured as BSR, the LS_D will be excluded from the
local PIM domain and cannot receive the BSR information transmitted from LS_B
any more.