Huawei quidway s7700 - Page 526

[SwitchC] slave switchover
# After SwitchC performs an active/standby switchover, during PIM GR, run the display pim
ipv6 routing-table command on SwitchB and SwitchC to view the routing tables. The command
output is as follows:
<SwitchB> display pim ipv6 routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, FF2E::1)
RP: 2002:1::1
Protocol: pim-sm, Flag: WC
UpTime: 00:02:20
Upstream interface: Vlanif30
Upstream neighbor: FE80::E0:F2C:3C02:1
RPF prime neighbor: FE80::E0:F2C:3C02:1
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlanif40
Protocol: pim-sm, UpTime: 00:02:20, Expires: 00:03:10
(2001:1::1, FF2E::1)
RP: 2002:1::1
Protocol: pim-sm, Flag: SPT ACT
UpTime: 00:02:20
Upstream interface: Vlanif30
Upstream neighbor: FE80::E0:F2C:3C02:1
RPF prime neighbor: FE80::E0:F2C:3C02:1
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlanif40
Protocol: pim-sm, UpTime: 00:02:20, Expires: 00:03:17
<SwitchC> display pim ipv6 routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, FF2E::1)
RP: 2002:1::1
Protocol: pim-sm, Flag: WC
UpTime: 00:02:44
Upstream interface: Vlanif50
Upstream neighbor: FE80::5463:0:9245:2
RPF prime neighbor: FE80::5463:0:9245:2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlanif60
Protocol: mld, UpTime: 00:02:44, Expires: -
(2001:1::1, FF2E::1)
RP: 2002:1::1
Protocol: pim-sm, Flag: SPT ACT
UpTime: 00:02:44
Upstream interface: Vlanif50
Upstream neighbor: FE80::5463:0:9245:2
RPF prime neighbor: FE80::5463:0:9245:2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlanif60
Protocol: pim-sm, UpTime: 00:02:44, Expires: -
On a multicast network that runs normally, the downstream switch periodically sends Join/Prune
messages to the upstream to update the timeout period of PIM routing entries on the upstream
device, thereby ensuring normal multicast data forwarding.
If the GR function is not configured on SwitchC, the new master MPU deletes the multicast
forwarding entries of the LPUs, receives the IGMP Report messages sent by hosts, and creates
the PIM routing entries. In this process, multicast traffic is interrupted.
Quidway S7700 Smart Routing Switch
Configuration Guide - Multicast 13 PIM-SM (IPv6) Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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