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VRRP

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  • 1.  VRRP

    Posted Dec 12, 2021 09:32 PM
    Hi all, 

    Configured vrrp on two core switches (layer 3). In our environment, all the access switches are layer 2 switches..
    Core-Switch1
    !
    vlan 5
    ip address 192.168.1.1/24
    !
    vrrp vrid 5
    virtual-ip address 192.168.1.100
    priority 254
    enable
    !

    and 
    Core-Switch2
    !
    vlan 5
    ip address 192.168.1.2/24
    !
    vrrp vrid 5
    virtual-ip address 192.168.1.100
    enable
    !
    One of the vlan..configuration is like this..

    On the access switch, default gateway is set to only core 1
    !
    ip default-gateway <core1_IP_Address>
    !

    Lets say for instance, if core 1 is down, then I need to tell access switch to route the traffic to Core2..
    Question here,
    Can I configure two default -gateways ? using matric ? 

    I don't think we can configure
    !
    ip route 0.0.0.0 0.0.0.0 <Core1>
    ip route 0.0.0.0 0.0.0.0 <Core2> 20
    !
    Please advise. 

    Many Thanks, 
    Binod

    ------------------------------
    Binod Ranabhat
    ------------------------------


  • 2.  RE: VRRP

    Posted Dec 13, 2021 07:24 AM
    Hi Binod, how are you?

    VRRP was designed for you to use as a gateway redundancy, so it is advisable to point the virtual IP address of the VLAN and VRRP will automatically balance the physical address of the box interface and the virtual IP.

    So there is no need to create static routes, let VRRP work this automatically.

    ------------------------------
    Leonardo Xavier
    ------------------------------