641
packets) and only enable IGMP(reveice and transmit IGMP packets).
Default:
Do not enable PIM-SM
Command Mode:
Interface Configuration Mode
Usage Guide:
Enable PIM-SM on the interface.
Example:
Enable PIM-SM on the interface vlan1.
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip pim sparse-mode
Switch(Config-If-Vlan1)#
17.3.3.20 ip pim ssm
Command: ip pim ssm {default|range <access-list-number >}
no ip pim ssm
Function:
Configure the range of pim ssm multicast address. The “
no ip pim ssm
”
command deletes configured pim ssm multicast group.
Parameter: default :
indicates the default range of pim ssm multicast group is 232/8.
<access-list-number >
is the applying access-list number, it ranges from 1
to 99.
Default:
Do not configure the range of pim ssm group address
Command Mode:
Global Mode
Usage Guide:
1. Only this command is configured, pim ssm can be available.
2. Before configuring this command, make sure ip pim multicasting succeed. This
command can’t work with DVMRP.
3. Access-list can’t used the lists created by ip access-list, but the lists created by
access-list.
4.Users can execute this command first and then configure the corresponding acl; or
delete corresponding acl in the bondage. After the bondage, only command no ip pim
ssm can release the bondage.
5 .If ssm is needed, this command should be configured at the related edge route. For
example, the local switch with igmp(must) and multicast source DR or RP(at least one
of the two) configure this command, the middle switch need only enable PIM-SM.
Example:
Configure the switch to enable PIM-SSM, the group’s range is what is
specified by access-list 23.
Switch (config)#ip pim ssm range 23
17.3.4 PIM-SM Configuration Examples
As shown in the following figure, add the Ethernet interfaces of SwitchA,
