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Configuring a Router for VRRP With PBR

Overview

To use the Virtual Router Redundancy Protocol (VRRP) with PBR (Policy-Based Routing), you should specify the behavior of the router interfaces that connect to the LAN, WAN, and the out-of-path Exinda appliances.

This article provides step-by-step instructions on how to configure a router for VRRP with PBR.

 

Process

  1. Launch the router's CLI.
  • To enter the privileged EXEC (enable) mode, run the following command at the prompt:

    hostname > enable
    • The hostname # prompt appears.
  •  To enter the configuration (config) mode, run the following command at the prompt:

    hostname # configure terminal
    • The hostname (config) prompt appears.
  • Configure the interface parameters for the switch installed between the router and the out-of-path Exinda Appliances (Gig0/0).
    1. Specify the interface to configure:

      hostname (config)# interface GigabitEthernet0/0
    2. Set the IP address of the out-of-path Exinda Appliance:

      hostname (config-if)# ip address 10.10.10.1 255.0.0.0
    3. Set the duplex and speed parameters for the interface:

      hostname (config-if)# duplex auto
      
hostname (config-if)# speed auto
  • Configure the parameters for the WAN interface (Gig0/1).
    1. Specify the interface to configure:

      hostname (config)# interface GigabitEthernet0/1
    2. Set the IP address and netmask of the WAN interface:

      hostname (config-if)# ip address 64.65.66.1 255.255.255.0
    3. Set the route map for policy routing to asymmetrical:

      hostname (config-if)# ip policy route-map Asym
    4. Set the duplex and speed parameters for the interface:

      hostname (config-if)# duplex auto
      
hostname (config-if)# speed auto
  • Configure the parameters for the LAN interface (Fa0/1).
    1. Specify the interface to configure:

      hostname (config)# interface FastEthernet0/1
    2. Set the IP address and netmask of the LAN interface:

      hostname (config-if)# ip address 172.16.12.1 255.255.0.0
    3. Set the route map for policy routing with the name Asym:

      hostname (config-if)# ip policy route-map Asym
    4. Set the duplex and speed parameters for the interface:

      hostname (config-if)# duplex auto
      
hostname (config-if)# speed auto
  • Create an access list named 120 that allows the devices in the specified IP address range to access the network:

    hostname (config)# access-list 120 permit ip
    172.16.0.0 0.0.255.255 64.65.66.0 0.0.0.255
    
hostname (config)# access-list 120 permit ip
    64.65.66.0 0.0.0.255 172.16.0.0 0.0.255.255
  • Configure the route map to enable access to the routes specified in the access list (120), and route the traffic to the router:

    route-map Asym permit 10
    
match ip address 120
    
set ip next-hop 10.10.10.100

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    1. Priyanka Bhotika

    2. Posted
    3. Updated

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