Example for Configuring Interface-based BPDU Tunneling on Devices with Different Roles

You can configure customer edges (CEs) as customers and provider edges (PEs) as providers and configure interface-based bridge protocol data unit (BPDU) tunneling on the CEs and PEs.

Networking Requirements

On the network shown in Figure 1, the CEs are connected to the PEs, and BPDUs exchanged between the CEs must be transparently transmitted by the PEs over the carrier network. Each PE interface is connected to only one CE, and BPDUs sent by the CEs to the PEs must be untagged. In this situation, you can configure interface-based BPDU tunneling.

This example describes the configuration on devices with different roles. In this scenario, the PEs can transparently transmit BPDUs sent by the CEs.

The CEs are configured as customers. The default well-known destination MAC address of BPDUs sent by the CEs is 0180-C200-0000.
The PEs are configured as providers. The well-known default destination MAC address of BPDUs sent by the PEs is 0180-C200-0008.

Figure 1 Networking for configuring interface-based BPDU tunneling on devices with different roles

Interfaces 1 through 3 in this example represent GE 0/1/1, GE 0/1/2, and GE 0/1/3, respectively.

Configuration Roadmap

The configuration roadmap is as follows:

Enable the spanning tree calculation on the CEs and PEs.
Add the PE interfaces that are connected to the CEs to specified VLANs.
Disable the spanning tree calculation on the PE interfaces that are connected to the CEs, and configure the PEs as providers to transparently transmit BPDUs.
Configure the PE interfaces that are connected to the carrier network to allow the passing of BPDUs with the VLAN IDs 100 and 200.

Data Preparation

To complete the configuration, you need the following data:

IDs of the VLANs to which the PE interfaces connected to the CEs belong
VLAN ID range that the PE interfaces connected to the carrier network allow to pass

Procedure

Switch the interfaces on the PEs and CEs that transmit BPDUs to Layer 2 interfaces.

If an interface is a Layer 2 interface, skip this step.

# Configure CE1.

<HUAWEI> system-view
[~HUAWEI] sysname CE1
[*HUAWEI] commit
[~CE1] interface gigabitethernet 0/1/1
[~CE1-GigabitEthernet0/1/1] portswitch
[*CE1-GigabitEthernet0/1/1] undo shutdown
[*CE1-GigabitEthernet0/1/1] commit
[~CE1-GigabitEthernet0/1/1] quit

# Configure CE2.

<HUAWEI> system-view
[~HUAWEI] sysname CE2
[*HUAWEI] commit
[~CE2] interface gigabitethernet 0/1/1
[~CE2-GigabitEthernet0/1/1] portswitch
[*CE2-GigabitEthernet0/1/1] undo shutdown
[*CE2-GigabitEthernet0/1/1] commit
[~CE2-GigabitEthernet0/1/1] quit

# Configure CE3.

<HUAWEI> system-view
[~HUAWEI] sysname CE3
[*HUAWEI] commit
[~CE3] interface gigabitethernet 0/1/1
[~CE3-GigabitEthernet0/1/1] portswitch
[*CE3-GigabitEthernet0/1/1] undo shutdown
[*CE3-GigabitEthernet0/1/1] commit
[~CE3-GigabitEthernet0/1/1] quit

# Configure CE4.

<HUAWEI> system-view
[~HUAWEI] sysname CE4
[*HUAWEI] commit
[~CE4] interface gigabitethernet 0/1/1
[~CE4-GigabitEthernet0/1/1] portswitch
[*CE4-GigabitEthernet0/1/1] undo shutdown
[*CE4-GigabitEthernet0/1/1] commit
[~CE4-GigabitEthernet0/1/1] quit

# Configure PE1.

<HUAWEI> system-view
[~HUAWEI] sysname PE1
[*HUAWEI] commit
[~PE1] interface gigabitethernet 0/1/3
[~PE1-GigabitEthernet0/1/3] portswitch
[*PE1-GigabitEthernet0/1/3] undo shutdown
[*PE1-GigabitEthernet0/1/3] quit
[*PE1] interface gigabitethernet 0/1/1
[*PE1-GigabitEthernet0/1/1] portswitch
[*PE1-GigabitEthernet0/1/1] undo shutdown
[*PE1-GigabitEthernet0/1/1] quit
[*PE1] interface gigabitethernet 0/1/2
[*PE1-GigabitEthernet0/1/2] portswitch
[*PE1-GigabitEthernet0/1/2] undo shutdown
[*PE1-GigabitEthernet0/1/2] quit
[*PE1] commit

# Configure PE2.

<HUAWEI> system-view
[~HUAWEI] sysname PE2
[*HUAWEI] commit
[~PE2] interface gigabitethernet 0/1/3
[~PE2-GigabitEthernet0/1/3] portswitch
[*PE2-GigabitEthernet0/1/3] undo shutdown
[*PE2-GigabitEthernet0/1/3] quit
[*PE2] interface gigabitethernet 0/1/1
[*PE2-GigabitEthernet0/1/1] portswitch
[*PE2-GigabitEthernet0/1/1] undo shutdown
[*PE2-GigabitEthernet0/1/1] quit
[*PE2] interface gigabitethernet 0/1/2
[*PE2-GigabitEthernet0/1/2] portswitch
[*PE2-GigabitEthernet0/1/2] undo shutdown
[*PE2-GigabitEthernet0/1/2] quit
[*PE2] commit

Enable the spanning tree calculation on the CEs and PEs.

# Configure CE1.

[~CE1] stp enable
[*CE1] commit

# Configure CE2.

[~CE2] stp enable
[*CE2] commit

# Configure CE3.

[~CE3] stp enable
[*CE3] commit

# Configure CE4.

[~CE4] stp enable
[*CE4] commit

# Configure PE1.

[~PE1] stp enable
[*PE1] commit

# Configure PE2.

[~PE2] stp enable
[*PE2] commit

Configure the PEs as providers.

# Configure PE1.

[~PE1] bpdu-tunnel stp bridge role provider
[*PE1] commit

# Configure PE2.

[~PE2] bpdu-tunnel stp bridge role provider
[*PE2] commit

Add GE0/1/3 of PE1 and PE2 to VLAN 100, add GE0/1/1 of PE1 and PE2 to VLAN 200, and disable the spanning tree calculation on GE0/1/3 and GE0/1/1 of PE1 and PE2.

# Configure PE1.

[~PE1] vlan 100
[*PE1-vlan100] port gigabitethernet 0/1/3
[*PE1-vlan100] commit
[~PE1-vlan100] quit
[~PE1] vlan 200
[*PE1-vlan200] port gigabitethernet 0/1/1
[*PE1-vlan200] commit
[~PE1-vlan200] quit
[~PE1] interface gigabitethernet 0/1/3
[~PE1-GigabitEthernet0/1/3] stp disable
[*PE1-GigabitEthernet0/1/3] quit
[*PE1] interface gigabitethernet 0/1/1
[*PE1-GigabitEthernet0/1/1] stp disable
[*PE1-GigabitEthernet0/1/1] quit
[*PE1] commit

# Configure PE2.

[~PE2] vlan 100
[*PE2-vlan100] port gigabitethernet 0/1/3
[*PE2-vlan100] commit
[~PE2-vlan100] quit
[~PE2] vlan 200
[*PE2-vlan200] port gigabitethernet 0/1/1
[*PE2-vlan200] commit
[~PE2-vlan200] quit
[~PE2] interface gigabitethernet 0/1/3
[~PE2-GigabitEthernet0/1/3] stp disable
[*PE2-GigabitEthernet0/1/3] quit
[*PE2] interface gigabitethernet 0/1/1
[*PE2-GigabitEthernet0/1/1] stp disable
[*PE2-GigabitEthernet0/1/1] quit
[*PE2] commit

Configure the PEs' GE0/1/2 connected to the carrier network to allow the passing of BPDUs with the VLAN IDs 100 and 200.

# Configure PE1.

[~PE1] interface gigabitethernet 0/1/2
[~PE1-GigabitEthernet0/1/2] port trunk allow-pass vlan 100 200
[*PE1-GigabitEthernet0/1/2] commit
[~PE1-GigabitEthernet0/1/2] quit

# Configure PE2.

[~PE2] interface gigabitethernet 0/1/2
[~PE2-GigabitEthernet0/1/2] port trunk allow-pass vlan 100 200
[*PE2-GigabitEthernet0/1/2] commit
[~PE2-GigabitEthernet0/1/2] quit

Verify the configuration.

Run the display stp command on CE1 and CE2 to view the root bridge selected by the Multiple Spanning Tree Protocol (MSTP). The command output shows that CE1 and CE2 have completed the spanning tree calculation and that GE0/1/1 on CE1 is the Root interface and GE0/1/1 on CE2 is the Designated interface.

[~CE1] display stp
-------[CIST Global Info] [Mode MSTP] -------
CIST Bridge         :32768.00e0-fc12-3456
Bridge Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
Active Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 19
CIST Root/ERPC      :32768.00e0-fc12-3457 / 199999
CIST RegRoot/IRPC   :32768.00e0-fc12-3456 / 0
CIST RootPortId     :128.82
BPDU-Protection     :disabled
TC or TCN received  :6
TC count per hello  :0
STP Converge Mode   :Normal
Time since last TC received :0 days 2h:24m:36s
Number of TC        :2
Last  TC  occurred  :GigabitEthernet0/1/1
----[Port1(GigabitEthernet0/1/1)] [FORWARDING] ----
Port Protocol       :Enabled
 Port Role           :CIST Root Port
 Port Priority       :128
 Port Cost(Dot1T )   :Config=auto / Active=200000000
 Desg. Bridge/Port   :32768.00e0-fc12-3457 / 128.82
 Port Edged          :Config=disabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transit Limit       :147 packets/hello-time
 Protection Type     :None
 Port STP Mode       :MSTP
  Port Protocol Type  :Config=auto / Active=dot1s
 BPDU Encapsulation  :Config=stp / Active=stp
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s RemHop 20
 TC or TCN send      :2
 TC or TCN received  :0
 BPDU Sent           :7
          TCN: 0, Config: 0, RST: 0, MST: 7
 BPDU Received       :105
          TCN: 0, Config: 0, RST: 0, MST: 105
[~CE2] display stp
-------[CIST Global Info] [Mode MSTP] -------
CIST Bridge         :32768.00e0-fc12-3457
Bridge Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
Active Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 19
CIST Root/ERPC      :32768.00e0-fc12-3457 / 0
CIST RegRoot/IRPC   :32768.00e0-fc12-3457 / 0
CIST RootPortId     :0.0
BPDU-Protection     :disabled
TC or TCN received  :3
TC count per hello  :0
STP Converge Mode   :Normal
Time since last TC received :0 days 2h:26m:42s
Number of TC        :1
Last TC occurred    :GigabitEhternet0/1/1
----[Port1(GigabitEthernet0/1/1)] [FORWARDING] ----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Dot1T )   :Config=auto / Active=199999
 Desg. Bridge/Port   :32768.00e0-fc12-3457 / 128.82
 Port Edged          :Config=disabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transit Limit       :3 packets/hello-time
 Protection Type     :None
 Port STP Mode       :MSTP
 Port Protocol Type  :Config=auto / Active=dot1s
 BPDU Encapsulation  :Config=stp / Active=stp
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s RemHop 19
 TC or TCN send      :0
 TC or TCN received  :0
 BPDU Sent           :82
          TCN: 0, Config: 0, RST: 0, MST: 82
 BPDU Received       :0
          TCN: 0, Config: 0, RST: 0, MST: 0

Run the display stp command on CE3 and CE4 to view the root bridge selected by MSTP. The command output shows that CE3 and CE4 have completed the spanning tree calculation and that GE0/1/1 on CE3 is the Root interface and GE0/1/1 on CE4 is the Designated interface.

[~CE3] display stp
-------[CIST Global Info][Mode MSTP]-------
CIST Bridge         :32768.00e0-fc12-3459
Bridge Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
Active Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 19
CIST Root/ERPC      :32768.00e0-fc12-3458 / 199999
CIST RegRoot/IRPC   :32768.00e0-fc12-3459 / 0
CIST RootPortId     :128.82
BPDU-Protection     :disabled
TC or TCN received  :0
TC count per hello  :0
STP Converge Mode   :Normal
Time since last TC received :0 days 10h:54m:37s   
Number of TC        :1
Last TC occurred    :GigabitEthernet0/1/1
----[Port1(GigabitEthernet0/1/1)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Root Port
 Port Priority       :128
 Port Cost(Dot1T )   :Config=auto / Active=199999
 Desg. Bridge/Port   :32768.00e0-fc12-3458 / 128.82
 Port Edged          :Config=disabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transit Limit       :3 packets/hello-time
 Protection Type     :None
 Port STP Mode       :MSTP
 Port Protocol Type  :Config=auto / Active=dot1s
 BPDU Encapsulation  :Config=stp / Active=stp
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s RemHop 20
 TC or TCN send      :2
 TC or TCN received  :0
 BPDU Sent           :7
          TCN: 0, Config: 0, RST: 0, MST: 7
 BPDU Received       :105
          TCN: 0, Config: 0, RST: 0, MST: 105
[~CE4] display stp
-------[CIST Global Info][Mode MSTP]-------
CIST Bridge         :32768.00e0-fc12-3458
Bridge Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20
Active Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 19
CIST Root/ERPC      :32768.00e0-fc12-3458 / 0
CIST RegRoot/IRPC   :32768.00e0-fc12-3458 / 0
CIST RootPortId     :0.0
BPDU-Protection     :disabled
TC or TCN received  :4
TC count per hello  :0
STP Converge Mode   :Normal
Time since last TC received :0 days 8h:59m:18s
Number of TC        :1
Last TC occurred    :GigabitEthernet0/1/1
----[Port1(GigabitEthernet0/1/1)][FORWARDING]----
 Port Protocol       :enabled
 Port Role           :CIST Designated Port
 Port Priority       :128
 Port Cost(Dot1T )   :Config=auto / Active=199999
 Desg. Bridge/Port   :32768.00e0-fc12-3458 / 128.82
 Port Edged          :Config=disabled / Active=disabled
 Point-to-point      :Config=auto / Active=true
 Transit Limit       :3 packets/hello-time
 Protection Type     :None
 Port STP Mode       :MSTP
 Port Protocol Type  :Config=auto / Active=dot1s
 BPDU Encapsulation  :Config=stp / Active=stp
 PortTimes           :Hello 2s MaxAge 20s FwDly 15s RemHop 20
 TC or TCN send      :2
 TC or TCN received  :0
 BPDU Sent           :7
          TCN: 0, Config: 0, RST: 0, MST: 7
 BPDU Received       :105
          TCN: 0, Config: 0, RST: 0, MST: 105

Configuration Files

CE1 configuration file

#
 sysname CE1
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
#
return

CE2 configuration file

#
 sysname CE2
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
#
return

CE3 configuration file

#
 sysname CE3
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
#
return

CE4 configuration file

#
 sysname CE4
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
#
return

PE1 configuration file

#
 sysname PE1
#
 vlan batch 100 200
#
 bpdu-tunnel stp bridge role provider
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port default vlan 200
 stp disable
#
interface GigabitEthernet0/1/2
 undo shutdown
 portswitch
 port trunk allow-pass vlan 100 200
#
interface GigabitEthernet0/1/3
 undo shutdown
 portswitch
 port default vlan 100
 stp disable
#
return

PE2 configuration file

#
 sysname PE2
#
 vlan batch 100 200
#
 bpdu-tunnel stp bridge role provider
#
stp enable
#
interface GigabitEthernet0/1/1
 undo shutdown
 portswitch
 port default vlan 200
 stp disable
#
interface GigabitEthernet0/1/2
 undo shutdown
 portswitch
 port trunk allow-pass vlan 100 200
#
interface GigabitEthernet0/1/3
 undo shutdown
 portswitch
 port default vlan 100
 stp disable
#
return