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Example for Configuring a VRRP6 Group in Load Sharing Mode

Networking Requirements

In Figure 1, HostA and HostC are dual-homed to SwitchA and SwitchB through the switch on the IPv6 network. To reduce the load of data traffic on SwitchA, HostA uses SwitchA as the default gateway to connect to the Internet, and SwitchB functions as the backup gateway. HostC uses SwitchB as the default gateway to connect to the Internet, and SwitchA functions as the backup gateway. This implements load sharing.

In this scenario, to avoid loops, ensure that all connected interfaces have STP disabled and connected interfaces are removed from VLAN 1. If STP is enabled and VLANIF interfaces of switches are used to construct a Layer 3 ring network, an interface on the network will be blocked. As a result, Layer 3 services on the network cannot run normally.

Figure 1 Networking diagram for a VRRP6 group in load sharing mode

Device

Interface

VLANIF Interface

IP Address

SwitchA

GE0/0/1

VLANIF 300

2002::1/64

GE0/0/2

VLANIF 100

FC00::1/64

SwitchB

GE0/0/1

VLANIF 200

2001::1/64

GE0/0/2

VLANIF 100

FC00::2/64

SwitchC

GE0/0/1

VLANIF 300

2002::2/64

GE0/0/2

VLANIF 200

2001::2/64

GE0/0/3

VLANIF 400

2003::2/64

Configuration Roadmap

The configuration roadmap is as follows:

  1. Assign an IP address to each interface and configure a routing protocol to ensure network connectivity.
  2. Create VRRP6 groups 1 and 2 on SwitchA and SwitchB. In VRRP6 group 1, configure SwitchA as the master and SwitchB as the backup. In VRRP6 group 2, configure SwitchB as the master and SwitchA as the backup.

Procedure

  1. Configure devices to ensure network connectivity.

    # Configure VLANs to which each interface belongs. SwitchA is used as an example. The configurations of SwitchB and SwitchC are similar to the configuration of SwitchA. For details, see the configuration files.

    <HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan batch 100 300
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type hybrid
[SwitchA-GigabitEthernet0/0/1] port hybrid pvid vlan 300
[SwitchA-GigabitEthernet0/0/1] port hybrid untagged vlan 300
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type hybrid
[SwitchA-GigabitEthernet0/0/2] port hybrid pvid vlan 100
[SwitchA-GigabitEthernet0/0/2] port hybrid untagged vlan 100
[SwitchA-GigabitEthernet0/0/2] quit

    # Assign an IP address to each interface. SwitchA is used as an example. The configurations of SwitchB and SwitchC are similar to the configuration of SwitchA. For details, see the configuration files.

    [SwitchA] ipv6
[SwitchA] interface vlanif 100
[SwitchA-Vlanif100] ipv6 enable
[SwitchA-Vlanif100] ipv6 address FC00::1 64
[SwitchA-Vlanif100] quit
[SwitchA] interface vlanif 300
[SwitchA-Vlanif300] ipv6 enable
[SwitchA-Vlanif300] ipv6 address 2002::1 64
[SwitchA-Vlanif300] quit

    # Configure Layer 2 transmission on the switch.

    <HUAWEI> system-view
[HUAWEI] sysname Switch
[Switch] vlan 100
[Switch-vlan100] quit
[Switch] interface gigabitethernet 0/0/1
[Switch-GigabitEthernet0/0/1] port link-type hybrid
[Switch-GigabitEthernet0/0/1] port hybrid pvid vlan 100
[Switch-GigabitEthernet0/0/1] port hybrid untagged vlan 100
[Switch-GigabitEthernet0/0/1] quit
[Switch] interface gigabitethernet 0/0/2
[Switch-GigabitEthernet0/0/2] port link-type hybrid
[Switch-GigabitEthernet0/0/2] port hybrid pvid vlan 100
[Switch-GigabitEthernet0/0/2] port hybrid untagged vlan 100
[Switch-GigabitEthernet0/0/2] quit

    # Configure OSPFv3 between SwitchA, SwitchB, and SwitchC. SwitchA is used as an example. The configurations of SwitchB and SwitchC are similar to the configuration of SwitchA. For details, see the configuration files.

    [SwitchA] ospfv3
[SwitchA-ospfv3-1] router-id 1.1.1.1
[SwitchA-ospfv3-1] quit
[SwitchA] interface vlanif 100
[SwitchA-Vlanif100] ospfv3 1 area 0
[SwitchA-Vlanif100] quit
[SwitchA] interface vlanif 300
[SwitchA-Vlanif300] ospfv3 1 area 0
[SwitchA-Vlanif300] quit

  2. Configure VRRP6 groups.

    # Configure VRRP6 group 1 on SwitchA and SwitchB, set the priority to 120 and the preemption delay to 20s for SwitchA, and set the default priority for SwitchB.

    [SwitchA] interface vlanif 100
[SwitchA-Vlanif100] vrrp6 vrid 1 virtual-ip FE80::1 link-local
[SwitchA-Vlanif100] vrrp6 vrid 1 virtual-ip FC00::100
[SwitchA-Vlanif100] vrrp6 vrid 1 priority 120
[SwitchA-Vlanif100] vrrp6 vrid 1 preempt-mode timer delay 20
[SwitchA-Vlanif100] quit
    [SwitchB] interface vlanif 100
[SwitchB-Vlanif100] vrrp6 vrid 1 virtual-ip FE80::1 link-local
[SwitchB-Vlanif100] vrrp6 vrid 1 virtual-ip FC00::100
[SwitchB-Vlanif100] quit

    # Configure VRRP6 group 2 on SwitchA and SwitchB, set the priority to 120 and the preemption delay to 20s for SwitchB, and set the default priority for SwitchA.

    [SwitchB] interface vlanif 100
[SwitchB-Vlanif100] vrrp6 vrid 2 virtual-ip FE80::2 link-local
[SwitchB-Vlanif100] vrrp6 vrid 2 virtual-ip FC00::60
[SwitchB-Vlanif100] vrrp6 vrid 2 priority 120
[SwitchB-Vlanif100] vrrp6 vrid 2 preempt-mode timer delay 20
[SwitchB-Vlanif100] quit
    [SwitchA] interface vlanif 100
[SwitchA-Vlanif100] vrrp6 vrid 2 virtual-ip FE80::2 link-local
[SwitchA-Vlanif100] vrrp6 vrid 2 virtual-ip FC00::60
[SwitchA-Vlanif100] quit

  3. Verify the configuration.

    # Run the display vrrp6 command on SwitchA. You can see that SwitchA is the master in VRRP6 group 1 and the backup in VRRP6 group 2.

    [SwitchA] display vrrp6
Vlanif100 | Virtual Router 1
    State : Master
    Virtual IP : FE80::1
                 FC00::100
    Master IP : FE80::218:82FF:FED3:2AF3
    PriorityRun : 120
    PriorityConfig : 120
    MasterPriority : 120
    Preempt : YES      Delay Time : 20 s
    TimerRun : 100 cs
    TimerConfig : 100 cs
    Virtual MAC : 0000-5e00-0201 
    Check hop limit : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Create time : 2012-01-12 20:15:46
    Last change time : 2012-01-12 20:15:46

Vlanif100 | Virtual Router 2
    State : Backup
    Virtual IP : FE80::2
                 FC00::60
    Master IP : FE80::218:82FF:FE68:7455
    PriorityRun : 100
    PriorityConfig : 100
    MasterPriority : 120
    Preempt : YES      Delay Time : 0 s
    TimerRun : 100 cs
    TimerConfig : 100 cs
    Virtual MAC : 0000-5e00-0202
    Check hop limit : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Create time : 2012-01-12 20:15:46
    Last change time : 2012-01-12 20:15:46

    # Run the display vrrp6 command on SwitchB. You can see that SwitchB is the backup in VRRP6 group 1 and the master in VRRP6 group 2.

    [SwitchB] display vrrp6
Vlanif100 | Virtual Router 1
    State : Backup
    Virtual IP : FE80::1
                 FC00::100
    Master IP : FE80::218:82FF:FED3:2AF3
    PriorityRun : 100
    PriorityConfig : 100
    MasterPriority : 120
    Preempt : YES      Delay Time : 0 s
    TimerRun : 100 cs
    TimerConfig : 100 cs
    Virtual MAC : 0000-5e00-0201 
    Check hop limit : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Create time : 2012-01-12 20:15:46
    Last change time : 2012-01-12 20:15:46

Vlanif100 | Virtual Router 2
    State : Master
    Virtual IP : FE80::2
                 FC00::60
    Master IP : FE80::218:82FF:FE68:7455
    PriorityRun : 120
    PriorityConfig : 120
    MasterPriority : 120
    Preempt : YES      Delay Time : 20 s
    TimerRun : 100 cs
    TimerConfig : 100 cs
    Virtual MAC : 0000-5e00-0202
    Check hop limit : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Create time : 2012-01-12 20:15:46
    Last change time : 2012-01-12 20:15:46

Configuration Files

  • SwitchA configuration file

    #
sysname SwitchA
#
ipv6
#
vlan batch 100 300
#
ospfv3 1
 router-id 1.1.1.1
#
interface Vlanif100
 ipv6 enable
 ipv6 address FC00::1/64
 ospfv3 1 area 0.0.0.0
 vrrp6 vrid 1 virtual-ip FE80::1 link-local
 vrrp6 vrid 1 virtual-ip FC00::100
 vrrp6 vrid 1 priority 120
 vrrp6 vrid 1 preempt-mode timer delay 20
 vrrp6 vrid 2 virtual-ip FE80::2 link-local
 vrrp6 vrid 2 virtual-ip FC00::60
#
interface Vlanif300
 ipv6 enable
 ipv6 address 2002::1/64
 ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 300
 port hybrid untagged vlan 300
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
return

  • SwitchB configuration file

    #
sysname SwitchB
#
ipv6
#
vlan batch 100 200
#
ospfv3 1
 router-id 2.2.2.2
#
interface Vlanif100
 ipv6 enable
 ipv6 address FC00::2/64
 ospfv3 1 area 0.0.0.0
 vrrp6 vrid 1 virtual-ip FE80::1 link-local
 vrrp6 vrid 1 virtual-ip FC00::100
 vrrp6 vrid 2 virtual-ip FE80::2 link-local
 vrrp6 vrid 2 virtual-ip FC00::60
 vrrp6 vrid 2 priority 120
 vrrp6 vrid 2 preempt-mode timer delay 20
#
interface Vlanif200
 ipv6 enable
 ipv6 address 2001::1/64
 ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 200
 port hybrid untagged vlan 200
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
return

  • SwitchC configuration file

    #
sysname SwitchC
#
ipv6
#
vlan batch 200 300 400
#
ospfv3 1
 router-id 3.3.3.3
#
interface Vlanif200
 ipv6 enable
 ipv6 address 2001::2/64
 ospfv3 1 area 0.0.0.0
#
interface Vlanif300
 ipv6 enable
 ipv6 address 2002::2/64
 ospfv3 1 area 0.0.0.0
#
interface Vlanif400
 ipv6 enable
 ipv6 address 2003::2/64
 ospfv3 1 area 0.0.0.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 300
 port hybrid untagged vlan 300
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 200
 port hybrid untagged vlan 200
#
interface GigabitEthernet0/0/3
 port link-type hybrid
 port hybrid pvid vlan 400
 port hybrid untagged vlan 400
#
return

  • Switch configuration file

    #
sysname Switch
#
vlan batch 100
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
return
Parent Topic: Configuration Examples for VRRP
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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