#
ospf 1
area 0.0.0.0
network 10.110.2.0 0.0.0.255
network 192.168.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255
#
return
6.16.3 Example for Configuring PIM BFD
Networking Requirements
On the multicast network shown in Figure 6-4, PIM-SM is run between Switches. Hosts receive
the VOD information from the multicast source. SwitchA is the DR on the source side.
SwitchB and SwitchC are connected to the segment where hosts reside. When the DR changes,
other Switches on the network segment can detect the change of the DR quickly.
You can set up the BFD session on the network segment where the host is located to respond to
the changes of the DR quickly. In addition, you can configure the DR switchover delay. In this
case, when a Switch is added to the network segment and may become a DR, the multicast
routing table of the original DR is reserved until the routing entries of the new DR are created.
Therefore, the packet loss due to the delay in creating multicast entries is prevented.
NOTE
After the delay of PIM DR switchover is set, the downstream receiver may receive two copies of the same
data during the DR switchover and the assert mechanism will be triggered. If you do not want to trigger
the assert mechanism, you do not need to set the DR switchover delay.
Figure 6-4 Configuring the PIM BFD networking in the shared network segment
PIM-SM
SwitchA
SwitchB
SwitchC
GE2/0/0
GE2/0/0
Source
10.1.7.1/24
User1 User2
VLAN100
GE1/0/0
GE1/0/0
Configuration Roadmap
The configuration roadmap is as follows:
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.
211
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