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CloudEngine 16800, 12800, 9800, 8800, 7800, 6800, and 5800 Series Switches Typical Configuration Examples (V100 and V200)
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Configuring MSTP and VRRP to Implement Load Balancing

Configuring MSTP and VRRP to Implement Load Balancing

Applicable Products and Versions

This example applies to the CE12800/CE6800 (excluding CE6810LI)/CE5800 V100R001C00 or later, the CE7800 V100R003C00 or later, the CE8800 V100R006C00 or later, the CE9800 V200R020C00 or later, the CloudEngine 16800 V200R005C20 or later, and CE12800E V200R002C50 or later.

For details about the mapping between software versions and switch models, see the Hardware Query Tool.

Networking Requirements

Access switches are dual-homed to core devices on a data center network. The requirements are as follows:

  • To ensure service reliability, deploy link redundancy. When one uplink is disconnected, traffic can be switched to another uplink. In addition, network bandwidth can be fully used.

  • Loops caused by link redundancy on the ring network are eliminated.

Figure 2-35 Networking for configuring MSTP and VRRP to implement load balancing

Device

Interface

VLANIF Interface

IP Address

SwitchA

10GE1/0/1 and 10GE1/0/2

VLANIF2

10.1.2.102/24

10GE1/0/1 and 10GE1/0/2

VLANIF3

10.1.3.102/24

10GE1/0/3

VLANIF4

10.1.4.102/24

SwitchB

10GE1/0/1 and 10GE1/0/2

VLANIF2

10.1.2.103/24

10GE1/0/1 and 10GE1/0/2

VLANIF3

10.1.3.103/24

10GE1/0/3

VLANIF5

10.1.5.103/24

Requirement Analysis

  • Deploy VRRP between SwitchA and SwitchB to implement link redundancy. VRRP load balancing improves link use efficiency.

  • Deploy MSTP between SwitchA, SwitchB, and SwitchC to eliminate loops.

Procedure

  1. Configure basic MSTP functions.

    1. Configure SwitchA, SwitchB, and SwitchC in the MST region RG1 and create MSTI 1 and MSTI 2.

      # Configure an MST region on SwitchA.

      <HUAWEI> system-view
[~HUAWEI] sysname SwitchA
[*HUAWEI] commit
[~SwitchA] stp region-configuration
[~SwitchA-mst-region] region-name RG1
[*SwitchA-mst-region] instance 1 vlan 2
[*SwitchA-mst-region] instance 2 vlan 3
[*SwitchA-mst-region] commit
[~SwitchA-mst-region] quit

      # Configure an MST region on SwitchB.

      <HUAWEI> system-view
[~HUAWEI] sysname SwitchB
[*HUAWEI] commit
[~SwitchB] stp region-configuration
[~SwitchB-mst-region] region-name RG1
[*SwitchB-mst-region] instance 1 vlan 2
[*SwitchB-mst-region] instance 2 vlan 3
[*SwitchB-mst-region] commit
[~SwitchB-mst-region] quit

      # Configure an MST region on SwitchC.

      <HUAWEI> system-view
[~HUAWEI] sysname SwitchC
[*HUAWEI] commit
[~SwitchC] stp region-configuration
[~SwitchC-mst-region] region-name RG1
[*SwitchC-mst-region] instance 1 vlan 2
[*SwitchC-mst-region] instance 2 vlan 3
[*SwitchC-mst-region] commit
[~SwitchC-mst-region] quit

    2. Configure root bridges and secondary root bridges of MSTI 1 and MSTI 2 in the MST region RG1.

      • Configure the root bridge and secondary root bridge of MSTI 1.

        # Configure SwitchA as the root bridge in MSTI 1.

        [~SwitchA] stp instance 1 root primary
[*SwitchA] commit

        # Configure SwitchB as the secondary root bridge in MSTI 1.

        [~SwitchB] stp instance 1 root secondary
[*SwitchB] commit

      • Configure the root bridge and secondary root bridge of MSTI 2.

        # Configure SwitchB as the root bridge in MSTI 2.

        [~SwitchB] stp instance 2 root primary
[*SwitchB] commit

        # Configure SwitchA as the secondary root bridge in MSTI 2.

        [~SwitchA] stp instance 2 root secondary
[*SwitchA] commit

    3. Set the path costs of the interfaces to be blocked in MSTI 1 and MSTI 2 to be greater than the default value.

      • The path cost range depends on the algorithm. Huawei proprietary algorithm is used as an example. Set the path costs of the interfaces to be blocked in MSTI 1 and MSTI 2 to 20000.

      • Switching devices on the same network must use the same algorithm to calculate the path cost of interfaces.

      # Configure SwitchA to use Huawei proprietary algorithm to calculate the path cost.

      [~SwitchA] stp pathcost-standard legacy
[*SwitchA] commit

      # Configure SwitchB to use Huawei proprietary algorithm to calculate the path cost.

      [~SwitchB] stp pathcost-standard legacy
[*SwitchB] commit

      # Configure SwitchC to use Huawei proprietary algorithm to calculate the default path cost, and set the path cost of 10GE1/0/1 in MSTI 2 to 20000 and path cost of 10GE1/0/4 in MSTI 1 to 20000.

      [~SwitchC] stp pathcost-standard legacy
[*SwitchC] interface 10ge 1/0/1
[*SwitchC-10GE1/0/1] stp instance 2 cost 20000
[*SwitchC-10GE1/0/1] commit
[~SwitchC-10GE1/0/1] quit
[~SwitchC] interface 10ge 1/0/4
[~SwitchC-10GE1/0/4] stp instance 1 cost 20000
[*SwitchC-10GE1/0/4] commit
[~SwitchC-10GE1/0/4] quit

    4. Enable MSTP to eliminate loops.

      MSTP is enabled by default.

      • Enable MSTP globally.

        # Enable MSTP on SwitchA.

        [~SwitchA] stp enable
[*SwitchA] commit

        # Enable MSTP on SwitchB.

        [~SwitchB] stp enable
[*SwitchB] commit

        # Enable MSTP on SwitchC.

        [~SwitchC] stp enable
[*SwitchC] commit

      • Configure ports connected to hosts as edge ports.

        # Configure 10GE1/0/2 and 10GE1/0/3 on SwitchC as edge ports.

        [~SwitchC] interface 10ge 1/0/2
[~SwitchC-10GE1/0/2] stp edged-port enable
[*SwitchC-10GE1/0/2] commit
[~SwitchC-10GE1/0/2] quit
[~SwitchC] interface 10ge 1/0/3
[~SwitchC-10GE1/0/3] stp edged-port enable
[*SwitchC-10GE1/0/3] commit
[~SwitchC-10GE1/0/3] quit

  2. Enable protection functions on the designated port of each root bridge in each MSTI. Here, root protection is used.

    # Enable root protection on 10GE1/0/1 of SwitchA.

    [~SwitchA] interface 10ge 1/0/1
[~SwitchA-10GE1/0/1] stp root-protection
[*SwitchA-10GE1/0/1] commit
[~SwitchA-10GE1/0/1] quit

    # Enable root protection on 10GE1/0/1 of SwitchB.

    [~SwitchB] interface 10ge 1/0/1
[~SwitchB-10GE1/0/1] stp root-protection
[*SwitchB-10GE1/0/1] commit
[~SwitchB-10GE1/0/1] quit

  3. Configure Layer 2 forwarding on switches on the ring network.

    • Create VLAN 2 and VLAN 3 on SwitchA, SwitchB, and SwitchC.

      # Create VLAN 2 and VLAN 3 on SwitchA.

      [~SwitchA] vlan batch 2 to 3

      # Create VLAN 2 and VLAN 3 on SwitchB.

      [~SwitchB] vlan batch 2 to 3

      # Create VLAN 2 and VLAN 3 on SwitchC.

      [~SwitchC] vlan batch 2 to 3

    • Add interfaces connecting to the ring to VLANs.

      # Add 10GE1/0/1 on SwitchA to VLAN 2 and VLAN 3.

      [~SwitchA] interface 10ge 1/0/1
[~SwitchA-10GE1/0/1] port link-type trunk
[*SwitchA-10GE1/0/1] port trunk allow-pass vlan 2 to 3
[*SwitchA-10GE1/0/1] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/1] commit
[~SwitchA-10GE1/0/1] quit

      # Add 10GE1/0/2 on SwitchA to VLAN 2 and VLAN 3.

      [~SwitchA] interface 10ge 1/0/2
[~SwitchA-10GE1/0/2] port link-type trunk
[*SwitchA-10GE1/0/2] port trunk allow-pass vlan 2 to 3
[*SwitchA-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/2] commit
[~SwitchA-10GE1/0/2] quit

      # Add 10GE1/0/1 on SwitchB to VLAN 2 and VLAN 3.

      [~SwitchB] interface 10ge 1/0/1
[~SwitchB-10GE1/0/1] port link-type trunk
[*SwitchB-10GE1/0/1] port trunk allow-pass vlan 2 to 3
[*SwitchB-10GE1/0/1] undo port trunk allow-pass vlan 1
[*SwitchB-10GE1/0/1] commit
[~SwitchB-10GE1/0/1] quit

      # Add 10GE1/0/2 on SwitchB to VLAN 2 and VLAN 3.

      [~SwitchB] interface 10ge 1/0/2
[~SwitchB-10GE1/0/2] port link-type trunk
[*SwitchB-10GE1/0/2] port trunk allow-pass vlan 2 to 3
[*SwitchB-10GE1/0/2] undo port trunk allow-pass vlan 1
[*SwitchB-10GE1/0/2] commit
[~SwitchB-10GE1/0/2] quit

      # Add 10GE1/0/1 on SwitchC to VLAN 2 and VLAN 3.

      [~SwitchC] interface 10ge 1/0/1
[~SwitchC-10GE1/0/1] port link-type trunk
[*SwitchC-10GE1/0/1] port trunk allow-pass vlan 2 to 3
[*SwitchC-10GE1/0/1] undo port trunk allow-pass vlan 1
[*SwitchC-10GE1/0/1] commit
[~SwitchC-10GE1/0/1] quit

      # Add 10GE1/0/2 on SwitchC to VLAN 2 and VLAN 3.

      [~SwitchC] interface 10ge 1/0/2
[~SwitchC-10GE1/0/2] port link-type access
[*SwitchC-10GE1/0/2] port default vlan 2
[*SwitchC-10GE1/0/2] commit
[~SwitchC-10GE1/0/2] quit

      # Add 10GE1/0/3 on SwitchC to VLAN 2 and VLAN 3.

      [~SwitchC] interface 10ge 1/0/3
[~SwitchC-10GE1/0/3] port link-type access
[*SwitchC-10GE1/0/3] port default vlan  3
[*SwitchC-10GE1/0/3] commit
[~SwitchC-10GE1/0/3] quit

      # Add 10GE1/0/4 on SwitchC to VLAN 2 and VLAN 3.

      [~SwitchC] interface 10ge 1/0/4
[~SwitchC-10GE1/0/4] port link-type trunk
[*SwitchC-10GE1/0/4] port trunk allow-pass vlan 2 to 3
[*SwitchC-10GE1/0/4] undo port trunk allow-pass vlan 1
[*SwitchC-10GE1/0/4] commit
[~SwitchC-10GE1/0/4] quit

  4. Configure devices to ensure network connectivity.

    # Assign an IP address to each interface. SwitchA is used as an example. The configuration of SwitchB is similar to that of SwitchA.

    [~SwitchA] vlan batch 4
[*SwitchA] interface 10ge 1/0/3
[*SwitchA-10GE1/0/3] port link-type trunk
[*SwitchA-10GE1/0/3] port trunk allow-pass vlan 4
[*SwitchA-10GE1/0/3] undo port trunk allow-pass vlan 1
[*SwitchA-10GE1/0/3] quit
[*SwitchA] interface vlanif 2
[*SwitchA-Vlanif2] ip address 10.1.2.102 24
[*SwitchA-Vlanif2] quit
[*SwitchA] interface vlanif 3
[*SwitchA-Vlanif3] ip address 10.1.3.102 24
[*SwitchA-Vlanif3] quit
[*SwitchA] interface vlanif 4
[*SwitchA-Vlanif4] ip address 10.1.4.102 24
[*SwitchA-Vlanif4] quit
[*SwitchA] commit

    # Configure OSPF between SwitchA, SwitchB, and router. SwitchA is used as an example. The configuration of SwitchB is similar to that of SwitchA.

    [~SwitchA] ospf 1
[*SwitchA-ospf-1] area 0
[*SwitchA-ospf-1-area-0.0.0.0] network 10.1.2.0 0.0.0.255
[*SwitchA-ospf-1-area-0.0.0.0] network 10.1.3.0 0.0.0.255
[*SwitchA-ospf-1-area-0.0.0.0] network 10.1.4.0 0.0.0.255
[*SwitchA-ospf-1-area-0.0.0.0] quit
[*SwitchA-ospf-1] quit
[*SwitchA] commit

  5. Configure VRRP groups.

    # Configure VRRP group 1 on SwitchA and SwitchB, set the priority of SwitchA to 120 and the preemption delay to 20s, and set the default priority for SwitchB.

    [~SwitchA] interface vlanif 2
[~SwitchA-Vlanif2] vrrp vrid 1 virtual-ip 10.1.2.100
[*SwitchA-Vlanif2] vrrp vrid 1 priority 120
[*SwitchA-Vlanif2] vrrp vrid 1 preempt-mode timer delay 20
[*SwitchA-Vlanif2] commit
[~SwitchA-Vlanif2] quit
[~SwitchB] interface vlanif 2
[~SwitchB-Vlanif2] vrrp vrid 1 virtual-ip 10.1.2.100
[*SwitchB-Vlanif2] commit
[~SwitchB-Vlanif2] quit

    # Configure VRRP group 2 on SwitchA and SwitchB, set the priority of SwitchB to 120 and the preemption delay to 20s, and set the default priority for SwitchA.

    [~SwitchB] interface vlanif 3
[~SwitchB-Vlanif3] vrrp vrid 2 virtual-ip 10.1.3.100
[*SwitchB-Vlanif3] vrrp vrid 2 priority 120
[*SwitchB-Vlanif3] vrrp vrid 2 preempt-mode timer delay 20
[*SwitchB-Vlanif3] commit
[~SwitchB-Vlanif3] quit
[~SwitchA] interface vlanif 3
[~SwitchA-Vlanif3] vrrp vrid 2 virtual-ip 10.1.3.100
[*SwitchA-Vlanif3] commit
[~SwitchA-Vlanif3] quit

    # Set virtual IP address 10.1.2.100 of VRRP group 1 as the default gateway of HostA, and virtual IP address 10.1.3.100 of VRRP group 2 as the default gateway of HostB.

Verifying the Configuration

  1. # After the configuration is complete, run the display vrrp command on SwitchA. You can see that SwitchA is the master in VRRP group 1 and the backup in VRRP group 2.

    <SwitchA> display vrrp verbose
  Vlanif2 | Virtual Router 1
    State : Master
    Virtual IP : 10.1.2.100
    Master IP : 10.1.2.102
    PriorityRun : 120
    PriorityConfig : 120                                                        
    MasterPriority : 120                                                        
    Preempt : YES   Delay Time : 20 s   Remain : --
    TimerRun : 1 s                                                              
    TimerConfig : 1 s                                                           
    Auth type : NONE                                                            
    Virtual MAC : 0000-5e00-0101                                                
    Check TTL : YES                                                             
    Config type : normal-vrrp                                                   
    Create time : 2013-05-11 11:39:18                                          
    Last change time : 2013-05-26 11:38:58

  Vlanif3 | Virtual Router 2
    State : Backup
    Virtual IP : 10.1.3.100
    Master IP : 10.1.3.103
    PriorityRun : 100
    PriorityConfig : 100                                                        
    MasterPriority : 120                                                        
    Preempt : YES   Delay Time : 0 s   Remain : --
    TimerRun : 1 s                                                              
    TimerConfig : 1 s                                                           
    Auth type : NONE                                                            
    Virtual MAC : 0000-5e00-0102                                                
    Check TTL : YES                                                             
    Config type : normal-vrrp                                                   
    Create time : 2013-05-11 11:40:18                                           
    Last change time : 2013-05-26 11:48:58

  2. Run the display vrrp command on SwitchB. You can see that SwitchB is the backup in VRRP group 1 and the master in VRRP group 2.

    <SwitchB> display vrrp verbose
  Vlanif2 | Virtual Router 1
    State : Backup
    Virtual IP : 10.1.2.100
    Master IP : 10.1.2.102
    PriorityRun : 100
    PriorityConfig : 100                                                        
    MasterPriority : 120                                                        
    Preempt : YES   Delay Time : 0 s   Remain : --
    TimerRun : 1 s                                                              
    TimerConfig : 1 s                                                           
    Auth type : NONE                                                            
    Virtual MAC : 0000-5e00-0101                                                
    Check TTL : YES                                                             
    Config type : normal-vrrp                                                   
    Create time : 2012-05-11 11:39:18                                           
    Last change time : 2012-05-26 11:38:58

  Vlanif3 | Virtual Router 2
    State : Master
    Virtual IP : 10.1.3.100
    Master IP : 10.1.3.103
    PriorityRun : 120
    PriorityConfig : 120                                                        
    MasterPriority : 120                                                        
    Preempt : YES   Delay Time : 20 s   Remain : --
    TimerRun : 1 s                                                              
    TimerConfig : 1 s                                                           
    Auth type : NONE                                                            
    Virtual MAC : 0000-5e00-0102                                                
    Check TTL : YES                                                             
    Config type : normal-vrrp                                                   
    Create time : 2012-05-11 11:40:18                                           
    Last change time : 2012-05-26 11:48:58

Configuration Files

  • Configuration file of SwitchA

    #
sysname SwitchA
#
vlan batch 2 to 4
#
stp instance 1 root primary
stp instance 2 root secondary
stp pathcost-standard legacy
#
stp region-configuration
 region-name RG1
 instance 1 vlan 2
 instance 2 vlan 3
#
interface Vlanif2
 ip address 10.1.2.102 255.255.255.0
 vrrp vrid 1 virtual-ip 10.1.2.100
 vrrp vrid 1 priority 120
 vrrp vrid 1 preempt-mode timer delay 20
#
interface Vlanif3
 ip address 10.1.3.102 255.255.255.0
 vrrp vrid 2 virtual-ip 10.1.3.100
#
interface Vlanif4
 ip address 10.1.4.102 255.255.255.0
 #
interface 10GE1/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
 stp root-protection
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 4
#
ospf 1
 area 0.0.0.0
  network 10.1.2.0 0.0.0.255
  network 10.1.3.0 0.0.0.255
  network 10.1.4.0 0.0.0.255
#
return

  • Configuration file of SwitchB

    #
sysname SwitchB
#
vlan batch 2 to 3 5
#
stp instance 1 root secondary
stp instance 2 root primary
stp pathcost-standard legacy
#
stp region-configuration
 region-name RG1
 instance 1 vlan 2
 instance 2 vlan 3
#
interface Vlanif2
 ip address 10.1.2.103 255.255.255.0
 vrrp vrid 1 virtual-ip 10.1.2.100
#
interface Vlanif3
 ip address 10.1.3.103 255.255.255.0
 vrrp vrid 2 virtual-ip 10.1.3.100
 vrrp vrid 2 priority 120
 vrrp vrid 2 preempt-mode timer delay 20
#
interface Vlanif5
 ip address 10.1.5.103 255.255.255.0
#
interface 10GE1/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
 stp root-protection
#
interface 10GE1/0/2
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
#
interface 10GE1/0/3
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 5
#
ospf 1
 area 0.0.0.0
  network 10.1.2.0 0.0.0.255
  network 10.1.3.0 0.0.0.255
  network 10.1.5.0 0.0.0.255
#
return

  • Configuration file of SwitchC

    #
sysname SwitchC
#
vlan batch 2 to 3
#
stp pathcost-standard legacy
#
stp region-configuration
 region-name RG1
 instance 1 vlan 2
 instance 2 vlan 3
#
interface 10GE1/0/1
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
 stp instance 2 cost 20000
#
interface 10GE1/0/2
 port link-type access
 port default vlan 2
 stp edged-port enable
#
interface 10GE1/0/3
 port link-type access
 port default vlan 3
 stp edged-port enable
#
interface 10GE1/0/4
 port link-type trunk
 undo port trunk allow-pass vlan 1
 port trunk allow-pass vlan 2 to 3
 stp instance 1 cost 20000
#
return
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