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Typical Configuration Examples

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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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, and CE12800E V200R002C50 or later.

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 2-40 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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Updated: 2020-01-07

Document ID: EDOC1000039339

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