[PE1-GigabitEthernet1/0/1] l2protocol-tunnel stp enable
[PE1-GigabitEthernet1/0/1] quit
# Configure PE2.
[PE2] vlan 100
[PE2-vlan100] quit
[PE2] interface GigabitEthernet 1/0/0
[PE2-GigabitEthernet1/0/0] port hybrid pvid vlan 100
[PE2-GigabitEthernet1/0/0] port hybrid untagged vlan 100
[PE2-GigabitEthernet1/0/0] l2protocol-tunnel stp enable
[PE2-GigabitEthernet1/0/0] quit
[PE2] vlan 200
[PE2-vlan200] quit
[PE2] interface GigabitEthernet 1/0/1
[PE2-GigabitEthernet1/0/1] port hybrid pvid vlan 200
[PE2-GigabitEthernet1/0/1] port hybrid untagged vlan 200
[PE2-GigabitEthernet1/0/1] l2protocol-tunnel stp enable
[PE2-GigabitEthernet1/0/1] quit
Step 3 Configure PEs to replace the destination MAC address of STP packets received from CEs.
# Configure PE1.
[PE1] l2protocol-tunnel stp group-mac 0100-5e00-0011
# Configure PE2.
[PE2] l2protocol-tunnel stp group-mac 0100-5e00-0011
Step 4 On PE1 and PE2, configure network-side interface GE 1/0/2 to allow packets of VLAN 100 and
VLAN 200 to pass.
# Configure PE1.
[PE1] interface gigabitethernet 1/0/2
[PE1-GigabitEthernet1/0/2] port hybrid tagged vlan 100 200
[PE1-GigabitEthernet1/0/2] quit
# Configure PE2.
[PE2] interface gigabitethernet 1/0/2
[PE2-GigabitEthernet1/0/2] port hybrid tagged vlan 100 200
[PE2-GigabitEthernet1/0/2] quit
Step 5 Verify the configuration.
After the configuration, run the display l2protocol-tunnel group-mac command, and you can
view the protocol type or name, original destination MAC address, new destination MAC
address, and priority of Layer 2 protocol packets to be transparently transmitted.
Take the display on PE1 as an example.
<PE1> display l2protocol-tunnel group-mac stp
Protocol EncapeType ProtocolType Protocol-MAC Group-MAC Pri
-----------------------------------------------------------------------------
stp llc dsap 0x42 0180-c200-0000 0100-5e00-0011 0
ssap 0x42
Run the display stp command on CE1 and CE2 to view the root in the MST region. You can
find that a spanning tree is calculated between CE1 and CE2. GE 1/0/0 of CE1 is a root port,
and CE 1/0/0 of CE2 is a designated port.
<CE1> display stp
-------[CIST Global Info] [Mode MSTP] -------
CIST Bridge :32768.00e0-fc9f-3257
Bridge Times :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
CIST Root/ERPC :32768.00e0-fc9a-4315 / 199999
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 11 Layer 2 Protocol Transparent Transmission Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
592
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