Huawei AR550 Series - Page 233

# Enable RSTP on all the ports except those connected to PCs on SwitchA, SwitchB,
SwitchC and SwitchD.
Step 2 Configure RSTP protection.
# Enable root protection on Eth2/0/0 and Eth2/0/1 of RouterA.
[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] stp root-protection
[RouterA-Ethernet2/0/0] quit
[RouterA] interface ethernet 2/0/1
[RouterA-Ethernet2/0/1] stp root-protection
[RouterA-Ethernet2/0/1] quit
Step 3 Verify the configuration.
After the preceding configuration is complete and the network becomes stable, perform the
following operation to verify the configuration:
# Run the display stp brief command on RouterA to view the states and protection type on
RSTP ports. The following information is displayed:
[RouterA] display stp brief
MSTID Port Role STP State Protection
0 Ethernet2/0/0 DESI FORWARDING ROOT
0 Ethernet2/0/1 DESI FORWARDING ROOT
After RouterA is configured as the root bridge, Ethernet2/0/0 connected to SwitchA and
Ethernet2/0/1 connected to SwitchB are elected as designated ports through spanning tree
calculation.
----End
Configuration Files
l Configuration file of RouterA
#
sysname RouterA
#
stp mode rstp
stp instance 0 root primary
stp pathcost-standard legacy
#
interface Ethernet2/0/0
stp root-protection
#
interface Ethernet2/0/1
stp root-protection
#
return
l Configuration file of SwitchA
#
sysname SwitchA
#
stp mode rstp
stp instance 0 root secondary
stp pathcost-standard legacy
#
interface Ethernet0/0/1
#
interface Ethernet0/0/2
#
interface Ethernet0/0/3
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
6 STP/RSTP Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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