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Configuring a Next-Hop Group

Next-hop groups allow you to include multiple interfaces used to forward duplicate packets used in port mirroring.

To configure a next-hop group, include the next-hop-group statement at the [edit forwarding-options] hierarchy level:



[edit forwarding-options]
next-hop-group [ group-names ] {


interface interface-name {
next-hop [ addresses ];
}


}

You can specify one or more group names. To configure the interface that sends out sampled information, include the interface statement and specify an interface. To specify a next-hop address to send sampled information, include the next-hop statement and specify an IP address.

Next-hop groups have the following restrictions:

Next-hop groups are supported for M-series routers only.
Next-hop groups support up to 16 next-hop addresses.
You can configure up to 30 next-hop groups.
Each next-hop group must have at least two next-hop addresses.

Note: When routes are exported, RIPv2 supports third-party next hops specified in policies, such as Virtual Router Redundancy Protocol (VRRP) groups.

Next-hop groups can be used for port mirroring. For more information about configuring port mirroring, see Configuring Port Mirroring and the JUNOS Feature Guide.

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