3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring IPv6 PIM-SM 689
n
■ When configuring a C-RP, ensure a relatively large bandwidth between this
C-RP and the other devices in the IPv6 PIM-SM domain.
■ An RP can serve multiple IPv6 multicast groups or all IPv6 multicast groups.
Only one RP can forward IPv6 multicast traffic for an IPv6 multicast group at a
moment.
Enabling embedded RP
With the embedded RP mechanism enabled, the device can resolve the RP address
from an IPv6 multicast addresses to replace the statically configured RP or the RP
dynamically calculated based on the BSR mechanism. The DR can get the RP
address just by analyzing the multicast data.
Follow these steps to enable embedded RP:
Configuring C-RP timers
To enable the BSR to distribute the RP-Set information within the IPv6 PIM-SM
domain, C-RPs must periodically send C-RP-Adv messages to the BSR. The BSR
learns the RP-Set information from the received messages, and encapsulates its
own IPv6 address together with the RP-Set information in its bootstrap messages.
The BSR then floods the bootstrap messages to all IPv6 devices in the network.
Each C-RP encapsulates a timeout value in its C-RP-Adv message. Upon receiving
this message, the BSR obtains this timeout value and starts a C-RP timeout timer. If
the BSR fails to hear a subsequent C-RP-Adv message from the C-RP when the
timer times out, the BSR assumes the C-RP to have expired or become
unreachable.
Follow these steps to configure C-RP timers:
Configure an interface to be a
C-RP
c-rp ipv6-address [
group-policy acl6-number |
priority priority | holdtime
hold-interval |
advertisement-interval
adv-interval ] *
Optional
No C-RPs are configured by
default.
Configure a legal C-RP
address range and the range
of IPv6 multicast groups to be
served
crp-policy acl6-number Optional
No restrictions by default
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enter IPv6 PIM view pim ipv6 -
Enable embedded RP embedded-rp [ acl6-number
]
Optional
Enabled by default
To do... Use the command... Remarks
Enter system view system-view -
Enter IPv6 PIM view pim ipv6 -