Avaya G250 Administration page 478

Configuring policy-based routing
The next set of commands applies the PBR list to the Loopback interface. This is necessary to
ensure that voice packets generated by the G250/G350 itself are routed via the E1/T1 line. The
Loopback interface is a logical interface that is always up. Packets sent from the G250/G350,
such as signaling packets, are sent via the Loopback interface. In this example, applying PBR
list 801 to the Loopback interface ensures that signaling packets originating from voice traffic
are sent via the T1/E1 line.
G350-001(super)# interface Loopback 1
G350-001(super-if:Loopback 1)# ip pbr-group 801
Done!
G350-001(super-if:Loopback 1)# exit
G350-001(super)#
The next set of commands defines a new PBR list (802). This list will be applied to the data
interface (VLAN 5). The purpose of this is to route data traffic through interfaces other than the
E1/T1 interface, so that this traffic will not interface with voice traffic.
G350-001(super)# ip pbr-list 802
G350-001(super-PBR 802)# name "Data_To_HQ"
Done!
G350-001(super-PBR 802)# ip-rule 1
G350-001(super-PBR 802/ip rule 1)# next-hop list 2
Done!
G350-001(super-PBR 802/ip rule 1)# ip-protocol tcp
Done!
G350-001(super-PBR 802/ip rule 1)# destination-ip host 149.49.43.189
Done!
G350-001(super-PBR 802/ip rule 1)# exit
G350-001(super-PBR 802)# exit
The next set of commands creates next hop list 2. This next hop list routes traffic to the GRE
tunnel (Tunnel 1). If the GRE tunnel is not available, the next hop list checks the next entry on
the list and routes the traffic to the E1/T1 interface (Serial 4/1). If neither interface is available,
the traffic is dropped. This allows data traffic to use the E1/T1 interface, but only when the GRE
tunnel is not available. Alternatively, the list can be configured without the E1/T1 interface,
preventing data traffic from using the E1/T1 interface at all.
G350-001(super)# ip next-hop-list 2
G350-001(super-next hop list 2)#name "Data-To_HQ"
Done!
G350-001(super-next hop list 2)#next-hop-interface 1 Tunnel 1
Done!
G350-001(super-next hop list 2)#next-hop-interface 2 Serial 4/1
Done!
G350-001(super-next hop list 2)#next-hop-interface 3 Null0
Done!
G350-001(super-next hop list 2)#exit
G350-001(super)#
478 Administration for the Avaya G250 and Avaya G350 Media Gateways