Avaya G250 Administration page 476

Configuring policy-based routing
In this example, the object of policy-based routing is to route all voice traffic over the E1/T1 line,
which is more expensive but provides the superior QoS necessary for voice traffic. Remaining
traffic is to be routed over the more inexpensive Internet connection.
It is assumed that the IP phones on VLAN 6 establish connections with other IP phones on the
same subnet, sending signalling packets to the MGC, and bearer packets directly to other IP
phones or to the G250/G350.
The policy-based routing configuring starts with PBR list 801. This list requires all voice packets
addressed to the MGC (149.49.43.210) with DSCP values that indicate voice transmission (34,
41, 43, 44, and 46) to be routed according to next hop list 1. This list directs packets to the T1/
E1 interface (Serial 4/1). If that interface is down, the packets are dropped.
In this example, it is important to include the destination IP address in each rule. This is
because without the destination address, calls from IP phones on VLAN 6 to a Softphone on
VLAN 5 will be routed by the PBR list to the E1/T1 line, rather than being sent directly to VLAN
5 via the G250/G350.
The following is the configuration for the application described above:
G350-001(super)# ip pbr-list 801
G350-001(super-PBR 801)# name "Voice"
Done!
G350-001(super-PBR 801)# ip-rule 1
G350-001(super-PBR 801/ip rule 1)# next-hop list 1
Done!
G350-001(super-PBR 801/ip rule 1)# destination-ip 149.49.123.0 0.0.0.255
Done!
G350-001(super-PBR 801/ip rule 1)# dscp 34
Done!
G350-001(super-PBR 801/ip rule 1)# exit
G350-001(super-PBR 801)# ip-rule 10
G350-001(super-PBR 801/ip rule 10)# next-hop list 1
Done!
G350-001(super-PBR 801/ip rule 10)# destination-ip 149.49.123.0 0.0.0.255
Done!
G350-001(super-PBR 801/ip rule 10)# dscp 41
Done!
G350-001(super-PBR 801/ip rule 10)# exit
Done!
G350-001(super-PBR 801/ip rule 20)# destination-ip 149.49.123.0 0.0.0.255
Done!
G350-001(super-PBR 801/ip rule 20)# dscp 43
Done!
G350-001(super-PBR 801/ip rule 20)# exit
G350-001(super-PBR 801)# ip-rule 30
G350-001(super-PBR 801/ip rule 30)# next-hop list 1
Done!
G350-001(super-PBR 801/ip rule 30)# destination-ip 149.49.123.0 0.0.0.255
Done!
476 Administration for the Avaya G250 and Avaya G350 Media Gateways