NOTE
It is recommended to configure the loopback interfaces as RPs.
If the address borrowing is configured, it is not recommended to configure C-RP on the interfaces that
have the same addresses. If the priorities of the interfaces are different, the BSR considers that the C-
RP configuration is repeatedly modified.
l holdtime hold-interval: specifies the interval during which the BSR waits for the
Advertisement message from the C-RP. By default, the interval is 150 seconds.
l advertisement-interval adv-interval: specifies the interval during which the C-RP sends the
Advertisement message. By default, the interval is 60 seconds.
Step 4 Run:
c-bsr interface-type interface-number [ hash-length [ priority ] ]
The C-BSR is configured.
l interface-type interface-number: specifies the interface where the C-BSR resides. The
interface must be configured with the PIM-SM.
l hash-length: specifies the length of the hash. According to the G, C-RP address, and the value
of hash-length, switchs calculate the C-RPs that have the same priority and require to serve
G by operating hash functions, and compare the calculation results. The C-RP with the
greatest calculated value functions as the RP that serves G.
l priority: specifies the priority used by switchs to join the BSR election. The greater is the
value, the higher is the priority. By default, it is 0.
In the BSR election, the C-BSR with the highest priority wins. In the case of the same priority,
the C-BSR with the largest IP address wins.
Step 5 (Optional) Run:
bsm semantic fragmentation
The BSR message fragmentation is enabled.
It is recommended to enable BSR message fragmentation on all devices on the network because
BSR message fragmentation can solve the problem faced by IP fragmentation that all fragments
become unavailable due to loss of fragment information.
Step 6 (Optional) Run:
auto-rp listening enable
The Auto-RP listening is enabled.
When the switch interworks with a switch supporting auto-RP, this command needs to be
configured on the switch.
----End
6.3.6 (Optional) Configuring the SSM Group Address Range
The default SSM group address range is 232.0.0.0/8. You can manually configure the SSM group
address range. Ensure that the SSM group address ranges configured on all devices in the network
are identical.
Context
This configuration is optional. By default, the SSM group address range is 232.0.0.0/8.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 6 PIM-SM (IPv4) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
153
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