Huawei AR3200 Series - Page 226

# Disable RSTP on interfaces connected to terminals for SwitchC and SwitchD.
l Enable RSTP globally.
# Enable RSTP globally on RouterA.
[RouterA] stp enable
# Enable RSTP globally on other switching devices.
l Enable RSTP on all the interfaces except the interfaces connected to terminals.
# Enable RSTP on RouterA Ethernet2/0/0 and Ethernet2/0/1.
[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] stp enable
[RouterA-Ethernet2/0/0] quit
[RouterA] interface ethernet 2/0/1
[RouterA-Ethernet2/0/1] stp enable
[RouterA-Ethernet2/0/1] quit
Enable STP on all the interfaces except the interfaces connected to terminals for
SwitchA, SwitchB, SwitchC and SwitchD.
Step 2 Configure RSTP protection function.
# 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 previous configurations, run the following commands to verify the configuration when
the network is stable:
# Run the display stp brief command on RouterA to view the interface status and protection
type. The displayed information is as follows:
[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 a root bridge, Ethernet2/0/0 connected to SwitchA and
Ethernet2/0/1 connected to SwitchB are elected as designated ports during 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
Huawei AR3200 Series Enterprise Routers
Configuration Guide - LAN 7 STP/RSTP Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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