[Contents] [Prev] [Next] [Index] [Report an Error]

Configuring Router Redundancy

The bidirectional forwarding detection (BFD) protocol that you configured on each PIM interface uses control packets and shorter detection time limits to detect failures rapidly in a network for multicast traffic. However, to configure redundancy for unicast traffic in a video network (for example, for video-on-demand streams), you can use Virtual Router Redundancy Protocol (VRRP).

VRRP enables hosts on a LAN to use redundant routing platforms on that LAN without requiring more than the static configuration of a single default route on the hosts. The VRRP routing platforms share the IP address corresponding to the default route configured on the hosts.

At any time, one of the VRRP routing platforms is the master (active) and the others are backups. If the master fails, one of the backup routers becomes the new master router, thus always providing a virtual default routing platform and allowing traffic on the LAN to be routed without relying on a single routing platform.

To configure VRRP for each metro and core interface on the video services router, follow these steps.

Note: The VRRP groups must be the same for each router, and the VRRP priority setting must be lower for one of the routers.

  1. Include the vrrp-group statement on the metro and core interface of Router VSR1.
    [edit]
    interfaces {
    ge-1/0/1 {
    vlan-tagging;
    unit 1 {
    family inet {
    address 10.1.1.1/24 {
    vrrp-group 1 {
    virtual-address 10.1.1.99;
    priority 200;
    fast-interval 250;
    }
    }
    }
    }
    }
    }
  2. Include the vrrp-group statement on the metro and core interface of Router VSR2.
    [edit]
    interfaces {
    ge-1/0/1 {
    vlan-tagging;
    unit 1 {
    family inet {
    address 10.1.1.2/24 {
    vrrp-group 1 {
    virtual-address 10.1.1.99;
    priority 100;
    fast-interval 250;
    }
    }
    }
    }
    }
    }
[Contents] [Prev] [Next] [Index] [Report an Error]

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.