3Com Switch 7750 Configuration Guide Guide

Common PIM Configuration 429
neighbors on the router interface. However, the total number of PIM neighbors of
a router is defined by the system, and you cannot modify it through commands.
You can configure basic ACL 2000 to 2999 (refer to the part about ACL in this
manual). Only the filtered Layer 3 switches (routers) cam serve as the PIM
neighbors of the current interface.
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CAUTION: If the number of existing PIM neighbors exceeds the user-defined limit,
the existing PIM neighbors will not be deleted.
Clearing the Related PIM
Entries
You can execute the reset command in user view to clear the related statistics
about multicast PIM.
Table 340 Configure PIM neighbors
Operation Command Description
Enter system view system-view -
Enable the multicast routing
protocol
multicast routing-enable Required
Enter VLAN interface view
interface Vlan-interface
interface-number
-
Enable PIM-DM/PIM-SM on
the current interface
pim dm / pim sm
Required
Configure the PIM protocol
type on the interface
Configure limit on the
number of PIM neighbors on
the interface
pim neighbor-limit limit
Optional
By default, the upper limit on
the number of PIM neighbors
on a interface is 128
Configure the filtering policy
for PIM neighbors
pim neighbor-policy
acl-number
Optional
You can configure to filter the
IP addresses of some multicast
groups in ACL.
By default, the filtering policy
for neighbors cannot be
enabled on an interface.
Table 341 Clear the related PIM entries
Operation Command Description
Clear the PIM route entries
reset pim routing-table { all
| { group-address [ mask
group-mask | mask-length
group-mask-length ] |
source-address [ mask
source-mask | mask-length
source-mask-length ] | {
incoming-interface {
interface-type
interface-number | null } } } * }
Perform the configuration in
user view.
Clear PIM neighbors
reset pim neighbor { all | {
neighbor-address | interface
interface-type
interface-number } * }
Perform the configuration in
user view.