Example for Configuring VBST

CloudEngine 12800 and 12800E V200R019C10 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, M-LAG, VLAN, QinQ, VLAN mapping, GVRP, STP/RSTP, MSTP, VBST, ERPS (G.8032), LBDT, and Layer 2 protocol transparent transmission.

Rate and give feedback:

Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).

Example for Configuring VBST

Networking Requirements

As shown in Figure 11-5, SwitchC and SwitchD (access switches) are dual-homed to SwitchA and SwitchB (aggregation switches) respectively. SwitchC transmits traffic from VLAN 10 and VLAN 20, and SwitchD transmits traffic from VLAN 20 and VLAN 30. A ring network is formed between the access layer and aggregation layer. The enterprise requires that service traffic in each VLAN be correctly forwarded and service traffic from different VLANs be load balanced to improve link use efficiency.

Figure 11-5 VBST networking

Configuration Roadmap

VBST can be used to eliminate loops between the access layer and aggregation layer and ensures that service traffic in each VLAN is correctly forwarded. In addition, traffic from different VLANs can be load balanced. The configuration roadmap is as follows:

Configure Layer 2 forwarding on access and aggregation switches.
Configure basic VBST functions on SwitchA, SwitchB, SwitchC, and SwitchD. Perform the following operations so that a spanning tree shown in Figure 11-5 is formed through calculation:
- Configure SwitchA and SwitchB as the root bridge and secondary root bridge of VLAN 10 respectively, SwitchA and SwitchB as the root bridge and secondary root bridge of VLAN 20 respectively, and configure SwitchB and SwitchA as the root bridge and secondary root bridge of VLAN 30 respectively, to ensure root bridge reliability.
- Set a larger path cost for 10GE1/0/2 on SwitchC in VLAN 10 and VLAN 20 so that 10GE1/0/2 is blocked in spanning trees of VLAN 10 and VLAN 20, and set a larger path cost for 10GE1/0/2 on SwitchD in VLAN 20 and VLAN 30 so that 10GE1/0/2 is blocked in the spanning tree of VLAN 20 and VLAN 30.

Procedure

Configure Layer 2 forwarding on switches of the ring network.

Create VLAN 10, VLAN 20, and VLAN 30 on SwitchA, SwitchB, SwitchC, and SwitchD.

# Create VLAN 10, VLAN 20, and VLAN 30 on SwitchA.

<HUAWEI> system-view
[~HUAWEI] sysname SwitchA
[*HUAWEI] commit
[~SwitchA] vlan batch 10 20 30
[*SwitchA] commit

# Create VLAN 10, VLAN 20, and VLAN 30 on SwitchB.

<HUAWEI> system-view
[~HUAWEI] sysname SwitchB
[*HUAWEI] commit
[~SwitchB] vlan batch 10 20 30
[*SwitchB] commit

# Create VLAN 10 and VLAN 20 on SwitchC.

<HUAWEI> system-view
[~HUAWEI] sysname SwitchC
[*HUAWEI] commit
[~SwitchC] vlan batch 10 20
[*SwitchC] commit

# Create VLAN 20 and VLAN 30 on SwitchD.

<HUAWEI> system-view
[~HUAWEI] sysname SwitchD
[*HUAWEI] commit
[~SwitchD] vlan batch 20 30
[*SwitchD] commit

Add ports connected to the ring to VLANs.

# Add 10GE1/0/1 on SwitchA to VLAN 10, VLAN 20, and VLAN 30.

[~SwitchA] interface 10ge 1/0/1
[~SwitchA-10GE1/0/1] port link-type trunk
[*SwitchA-10GE1/0/1] port trunk allow-pass vlan 10 20 30
[~SwitchA-10GE1/0/1] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/1] quit
[*SwitchA] commit

# Add 10GE1/0/2 on SwitchA to VLAN 20 and VLAN 30.

[~SwitchA] interface 10ge 1/0/2
[~SwitchA-10GE1/0/2] port link-type trunk
[*SwitchA-10GE1/0/2] port trunk allow-pass vlan 20 30
[*SwitchA-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/2] quit
[*SwitchA] commit

# Add 10GE1/0/3 on SwitchA to VLAN 10 and VLAN 20.

[~SwitchA] interface 10ge 1/0/3
[~SwitchA-10GE1/0/3] port link-type trunk
[*SwitchA-10GE1/0/3] port trunk allow-pass vlan 10 20
[*SwitchA-10GE1/0/3] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/3] quit
[*SwitchA] commit

# Add 10GE1/0/1 on SwitchB to VLAN 10, VLAN 20, and VLAN 30.

[~SwitchB] interface 10ge 1/0/1
[~SwitchB-10GE1/0/1] port link-type trunk
[*SwitchB-10GE1/0/1] port trunk allow-pass vlan 10 20 30
[*SwitchB-10GE1/0/1] undo port trunk allow-pass vlan 1
[*SwitchB-10GE1/0/1] quit
[*SwitchB] commit

# Add 10GE1/0/2 on SwitchB to VLAN 10 and VLAN 20.

[~SwitchB] interface 10ge 1/0/2
[~SwitchB-10GE1/0/2] port link-type trunk
[*SwitchB-10GE1/0/2] port trunk allow-pass vlan 10 20
[*SwitchB-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchB-10GE1/0/2] quit
[*SwitchB] commit

# Add 10GE1/0/3 on SwitchB to VLAN 20 and VLAN 30.

[~SwitchB] interface 10ge 1/0/3
[~SwitchB-10GE1/0/3] port link-type trunk
[*SwitchB-10GE1/0/3] port trunk allow-pass vlan 20 30
[*SwitchB-10GE1/0/3] undo port trunk allow-pass vlan 1
[*SwitchB-10GE1/0/3] quit
[*SwitchB] commit

# Add 10GE1/0/2 on SwitchC to VLAN 10 and VLAN 20.

[~SwitchC] interface 10ge 1/0/2
[~SwitchC-10GE1/0/2] port link-type trunk
[*SwitchC-10GE1/0/2] port trunk allow-pass vlan 10 20
[*SwitchC-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchC-10GE1/0/2] quit
[*SwitchC] commit

# Add 10GE1/0/3 on SwitchC to VLAN 10 and VLAN 20.

[~SwitchC] interface 10ge 1/0/3
[~SwitchC-10GE1/0/3] port link-type trunk
[*SwitchC-10GE1/0/3] port trunk allow-pass vlan 10 20
[*SwitchC-10GE1/0/3] undo port trunk allow-pass vlan 1
[*SwitchC-10GE1/0/3] quit
[*SwitchC] commit

# Add 10GE1/0/4 on SwitchC to VLAN 10 and GE1/0/5 to VLAN 20.

[~SwitchC] interface 10ge 1/0/4
[~SwitchC-10GE1/0/4] port link-type access
[*SwitchC-10GE1/0/4] port default vlan 10
[*SwitchC-10GE1/0/4] quit
[*SwitchC] interface 10ge 1/0/5
[*SwitchC-10GE1/0/5] port link-type access
[*SwitchC-10GE1/0/5] port default vlan 20
[*SwitchC-10GE1/0/5] quit
[*SwitchC] commit

# Add 10GE1/0/2 on SwitchD to VLAN 20 and VLAN 30.

[~SwitchD] interface 10ge 1/0/2
[~SwitchD-10GE1/0/2] port link-type trunk
[*SwitchD-10GE1/0/2] port trunk allow-pass vlan 20 30
[*SwitchD-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchD-10GE1/0/2] quit
[*SwitchD] commit

# Add 10GE1/0/3 on SwitchD to VLAN 20 and VLAN 30.

[~SwitchD] interface 10ge 1/0/3
[~SwitchD-10GE1/0/3] port link-type trunk
[*SwitchD-10GE1/0/3] port trunk allow-pass vlan 20 30
[*SwitchD-10GE1/0/3] undo port trunk allow-pass vlan 1
[*SwitchD-10GE1/0/3] quit
[*SwitchD] commit

# Add 10GE1/0/4 on SwitchD to VLAN 10 and 10GE1/0/5 to VLAN 30.

[~SwitchD] interface 10ge 1/0/4
[~SwitchD-10GE1/0/4] port link-type access
[*SwitchD-10GE1/0/4] port default vlan 20
[*SwitchD-10GE1/0/4] quit
[*SwitchD] interface 10ge 1/0/5
[*SwitchD-10GE1/0/5] port link-type access
[*SwitchD-10GE1/0/5] port default vlan 30
[*SwitchD-10GE1/0/5] quit
[*SwitchD] commit

Configure basic VBST functions.
1. Configure switches on the ring network to work in VBST mode.
  
  # Configure SwitchA to work in VBST mode.
```
[~SwitchA] stp mode vbst
[*SwitchA] commit
```
  # Configure SwitchB to work in VBST mode.
```
[~SwitchB] stp mode vbst
[*SwitchB] commit
```
  # Configure SwitchC to work in VBST mode.
```
[~SwitchC] stp mode vbst
[*SwitchC] commit
```
  # Configure SwitchD to work in VBST mode.
```
[~SwitchD] stp mode vbst
[*SwitchD] commit
```
2. Configure the root bridge and secondary root bridge.
  - Configure the root bridge and secondary root bridge in VLAN 10.
    
    # Configure SwitchA as the root bridge in VLAN 10.
```
[~SwitchA] stp vlan 10 root primary
[*SwitchA] commit
```
    # Configure SwitchB as the secondary root bridge in VLAN 10.
```
[~SwitchB] stp vlan 10 root secondary
[*SwitchB] commit
```
  - Configure the root bridge and secondary root bridge in VLAN 20.
    
    # Configure SwitchA as the root bridge in VLAN 20.
```
[~SwitchA] stp vlan 20 root primary
[*SwitchA] commit
```
    # Configure SwitchB as the secondary root bridge in VLAN 20.
```
[~SwitchB] stp vlan 20 root secondary
[*SwitchB] commit
```
  - Configure the root bridge and secondary root bridge in VLAN 30.
    
    # Configure SwitchB as the root bridge in VLAN 30.
```
[~SwitchB] stp vlan 30 root primary
[*SwitchB] commit
```
    # Configure SwitchA as the secondary root bridge in VLAN 30.
```
[~SwitchA] stp vlan 30 root secondary
[*SwitchA] commit
```
3. Configure the path cost for a port in each VLAN so that the port can be blocked.
  - The path cost range depends on the algorithm. IEEE 802.1t standard is used as an example. Set the path costs of the ports to be blocked to 2000000.
  - All switches on the same network must use the same path cost calculation method.
  # Set the path cost of GE1/0/2 on SwitchC to 2000000 in VLAN 10 and VLAN 20.
```
[~SwitchC] interface 10ge 1/0/2
[~SwitchC-10GE1/0/2] stp vlan 10 cost 2000000
[*SwitchC-10GE1/0/2] stp vlan 20 cost 2000000
[*SwitchC-10GE1/0/2] quit
[*SwitchC] commit
```
  # Set the path cost of GE1/0/2 on SwitchD to 2000000 in VLAN 20 and VLAN 30.
```
[~SwitchD] interface 10ge 1/0/2
[~SwitchD-10GE1/0/2] stp vlan 20 cost 2000000
[*SwitchD-10GE1/0/2] stp vlan 30 cost 2000000
[*SwitchD-10GE1/0/2] quit
[*SwitchD] commit
```
4. Enable VBST to eliminate loops.
  - Enable VBST globally.
    
    By default, VBST is enabled globally.
    
    Run the display stp vlan vlan-id information command to check the VBST status. If VBST is disabled, run the undo stp vlan vlan-id disable command in the system view to enable VBST globally.
  - Enable VBST in a VLAN.
    
    By default, VBST is enabled in a VLAN.
    
    Run the display stp vlan vlan-id information command to check the VBST status. If the message "The protocol is disabled" is displayed, VBST is disabled in the VLAN. Run the undo stp vlan vlan-id disable command in the system view to enable VBST in the VLAN.
  - Enable VBST on a port.
    
    By default, VBST is enabled on a Layer 2 Ethernet port.
    
    Run the display stp interface interface-type interface-number command to check the VBST status on a port. If the message "The protocol is disabled" is displayed, VBST is disabled on the port. Run the undo stp vlan disable command in the interface view to enable VBST on the port.

Verify the configuration.

After the configuration is complete and the network topology becomes stable, perform the following operations to verify the configuration.

# Run the display stp vlan bridge local command on SwitchA to check the STP working mode.

[~SwitchA] display stp vlan bridge local
------------------------------------------------------------------
VLANID BridgeID             HelloTime MaxAge ForwardDelay Protocol
------------------------------------------------------------------
   10 32869.ac94-8400-df01         2     20           15     VBST
   20 32970.ac94-8400-df01         2     20           15     VBST
   30 33071.ac94-8400-df01         2     20           15     VBST
------------------------------------------------------------------

The preceding information shows that the VBST mode is used.

# Run the display stp vlan information brief command on SwitchA to check the port status.

[~SwitchA] display stp vlan information brief
--------------------------------------------------------------------------------                                                    
VLANID Interface              Role STPState    Protection           Cost Edged                                                      
--------------------------------------------------------------------------------                                                    
    10 10GE1/0/1              DESI forwarding  none                20000 disable                                                    
    10 10GE1/0/3              DESI forwarding  none                 2000 disable                                                    
    20 10GE1/0/1              DESI forwarding  none                20000 disable                                                    
    20 10GE1/0/2              DESI forwarding  none                 2000 disable                                                    
    20 10GE1/0/3              DESI forwarding  none                 2000 disable                                                    
    30 10GE1/0/1              ALTE discarding  none                20000 disable                                                    
    30 10GE1/0/2              ROOT forwarding  none                 2000 disable                                                    
--------------------------------------------------------------------------------

The preceding information shows that SwitchA participates in spanning tree calculation in VLAN 10, VLAN 20, and VLAN 30. For example, SwitchA is the root bridge in VLAN 10 and VLAN 20, so 10GE1/0/1 and 10GE1/0/3 in VLAN 10 are selected as designated ports. 10GE1/0/1, 10GE1/0/2, and 10GE1/0/3 in VLAN 20 are selected as designated ports. SwitchA is the secondary root bridge in VLAN 30, so 10GE1/0/2 is selected as the root port and 10GE1/0/1 is selected as the designated port in VLAN 30.

# Run the display stp vlan 10 information command on SwitchA to check detailed information about VLAN 10.

[~SwitchA] display stp vlan 10 information
VLAN 10 information:                                                                                                                
--------------------------------------------------------------------------------                                                    
Global information:                                                                                                                 
    Protocol Status            : Enabled                                                                                            
    Bpdu-filter Default        : Disabled                                                                                           
    Bpdu-protection            : Disabled                                                                                           
    Tc-protection              : Disabled                                                                                           
    Tc-protection Threshold    : 1                                                                                                  
    Tc-protection Interval(s)  : 10                                                                                                 
    Edged Port Default         : Disabled                                                                                           
    Path Cost Standard         : Dot1T                                                                                              
    Timer Factor               : 3                                                                                                  
    Transit Limit              : 6                                                                                                  
                                                                                                                                    
    Bridge ID                  : 10.ac94-8400-df01                                                                                  
    Config Times               : Hello 2s MaxAge 20s FwDly 15s MaxHop 20                                                            
    Active Times               : Hello 2s MaxAge 20s FwDly 15s MaxHop 20                                                            
    Root ID/RPC                : 10.ac94-8400-df01 / 0                                                                              
    RootPortId(InterfaceName)  : 0.0 (This bridge is the root)                                                                      
    Root Type                  : Primary                                                                                            
Port information:                                                                                                                   
    Port ID   : 5                                                                                                                   
    Interface : 10GE1/0/1                                                                                                           
        STP State                      : Forwarding                                                                                 
        Port Role                      : Designated Port                                                                            
        Port Priority                  : 128                                                                                        
        Path Cost Standard             : Dot1T                                                                                      
        Port Cost(Config/Active)       : 0 / 20000                                                                                  
        Desg. Bridge/Port              : 10.ac94-8400-df01 / 128.5                                                                  
        Port Edged(Config/Active)      : Default / Disabled                                                                         
        Point-to-point(Config/Active)  : Auto / True                                                                                
        Transit Limit                  : 6 packets/hello                                                                            
        Protection Type                : None                                                                                       
    Port ID   : 8                                                                                                                   
    Interface : 10GE1/0/3                                                                                                           
        STP State                      : Forwarding                                                                                 
        Port Role                      : Designated Port                                                                            
        Port Priority                  : 128                                                                                        
        Path Cost Standard             : Dot1T                                                                                      
        Port Cost(Config/Active)       : 0 / 2000                                                                                   
        Desg. Bridge/Port              : 10.ac94-8400-df01 / 128.8                                                                  
        Port Edged(Config/Active)      : Default / Disabled                                                                         
        Point-to-point(Config/Active)  : Auto / True                                                                                
        Transit Limit                  : 6 packets/hello                                                                            
        Protection Type                : None                                                                                       
--------------------------------------------------------------------------------

The preceding information shows that SwitchA is selected as the root bridge in VLAN 10 and 10GE1/0/1 and 10GE1/0/3 are selected as designated ports in Forwarding state.

# Run the display stp vlan information brief command on SwitchB, SwitchC, and SwitchD to check the port status.

[~SwitchB] display stp vlan information brief
------------------------------------------------------------------------------
VLANID Interface            Role STPState    Protection           Cost Edged  
------------------------------------------------------------------------------
    10 10GE1/0/1              ALTE discarding  none                20000 disable                                                    
    10 10GE1/0/2              ROOT forwarding  none                 2000 disable                                                    
    20 10GE1/0/1              ALTE discarding  none                20000 disable                                                    
    20 10GE1/0/2              ROOT forwarding  none                 2000 disable                                                    
    20 10GE1/0/3              DESI forwarding  none                 2000 disable                                                    
    30 10GE1/0/1              DESI forwarding  none                20000 disable                                                    
    30 10GE1/0/3              DESI forwarding  none                 2000 disable                                                    
------------------------------------------------------------------------------

[~SwitchC] display stp vlan information brief
------------------------------------------------------------------------------
VLANID Interface            Role STPState    Protection           Cost Edged  
------------------------------------------------------------------------------
    10 10GE1/0/2              ROOT forwarding  none                 2000 disable                                                    
    10 10GE1/0/3              DESI forwarding  none              2000000 disable                                                    
    10 10GE1/0/4              DESI forwarding  none                 2000 disable                                                    
    20 10GE1/0/2              ROOT forwarding  none                 2000 disable                                                    
    20 10GE1/0/3              DESI forwarding  none              2000000 disable                                                    
    20 10GE1/0/5              DESI forwarding  none                 2000 disable                                                    
------------------------------------------------------------------------------

[~SwitchD] display stp vlan information brief
------------------------------------------------------------------------------
VLANID Interface            Role STPState    Protection           Cost Edged  
------------------------------------------------------------------------------
    20 10GE1/0/2              ALTE discarding  none              2000000 disable                                                    
    20 10GE1/0/3              ROOT forwarding  none                 2000 disable                                                    
    20 10GE1/0/4              DESI forwarding  none                 2000 disable                                                    
    30 10GE1/0/2              DESI forwarding  none              2000000 disable                                                    
    30 10GE1/0/3              ROOT forwarding  none                 2000 disable                                                    
    30 10GE1/0/5              DESI forwarding  none                 2000 disable                                                    
------------------------------------------------------------------------------

The preceding information shows that SwitchB participates in spanning tree calculation in VLAN 10, VLAN 20, and VLAN 30, SwitchC participates in spanning tree calculation in VLAN 10 and VLAN 20, and SwitchD participates in spanning tree calculation in VLAN 20 and VLAN 30. After the calculation is complete, ports are selected as different roles to eliminate loops.

Different spanning trees are formed in VLAN 10, VLAN 20, and VLAN 30, and traffic in VLAN 10, VLAN 20, and VLAN 30 is forwarded along different spanning trees to implement load balancing.

Configuration Files

Configuration file of SwitchA

#
sysname SwitchA
#
stp vlan 30 root secondary
stp vlan 10 20 root primary
#
vlan batch 10 20 30
#
stp mode vbst
#
interface 10GE1/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20 30
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 20 30
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
#
return

Configuration file of SwitchB

#
sysname SwitchB
#
stp vlan 10 20 root secondary
stp vlan 30 root primary
#
vlan batch 10 20 30
#
stp mode vbst
#
interface 10GE1/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20 30
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 20 30
#
return

Configuration file of SwitchC

#
sysname SwitchC
#
vlan batch 10 20
#
stp mode vbst
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
 stp vlan 10 20 cost 2000000
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 10 20
#
interface 10GE1/0/4
 port link-type access
 port default vlan 10
 stp edged-port enable
#
interface 10GE1/0/5
 port link-type access
 port default vlan 20
 stp edged-port enable
#
return

Configuration file of SwitchD

#
sysname SwitchD
#
vlan batch 20 30
#
stp mode vbst
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 20 30
 stp vlan 20 30 cost 2000000
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 20 30
#
interface 10GE1/0/4
 port link-type access
 port default vlan 20
 stp edged-port enable
#
interface 10GE1/0/5
 port link-type access
 port default vlan 30
 stp edged-port enable
#
return

Translation

简体中文

Download

Updated: 2021-04-01

Document ID: EDOC1100138135

Downloads: 159

Average rating:

This Document Applies to these Products

Enterprise

Huawei Cloud

Carrier

Consumer

Corporate

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, M-LAG, VLAN, QinQ, VLAN mapping, GVRP, STP/RSTP, MSTP, VBST, ERPS (G.8032), LBDT, and Layer 2 protocol transparent transmission.

Networking Requirements

Configuration Roadmap

Procedure

Configuration Files

Related Version

Related Documents