Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring policy-based routingIn 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. Remainingtraffic 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 thesame subnet, sending signalling packets to the MGC, and bearer packets directly to other IPphones or to the G350.The policy-based routing configuring starts with PBR list 801. This list requires all voice packetsaddressed 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 isbecause without the destination address, calls from IP phones on VLAN 6 to a Softphone onVLAN 5 will be routed by the PBR list to the E1/T1 line, rather than being sent directly to VLAN5 via the G350.The following is the configuration for the application described above:G350-001(super)# ip pbr-list 801G350-001(super-PBR 801)# name "Voice"Done!G350-001(super-PBR 801)# ip-rule 1G350-001(super-PBR 801/ip rule 1)# next-hop list 1Done!G350-001(super-PBR 801/ip rule 1)# destination-ip 149.49.123.0 0.0.0.255Done!G350-001(super-PBR 801/ip rule 1)# dscp 34Done!G350-001(super-PBR 801/ip rule 1)# exitG350-001(super-PBR 801)# ip-rule 10G350-001(super-PBR 801/ip rule 10)# next-hop list 1Done!G350-001(super-PBR 801/ip rule 10)# destination-ip 149.49.123.0 0.0.0.255Done!G350-001(super-PBR 801/ip rule 10)# dscp 41Done!G350-001(super-PBR 801/ip rule 10)# exitDone!G350-001(super-PBR 801/ip rule 20)# destination-ip 149.49.123.0 0.0.0.255Done!G350-001(super-PBR 801/ip rule 20)# dscp 43Done!G350-001(super-PBR 801/ip rule 20)# exitG350-001(super-PBR 801)# ip-rule 30G350-001(super-PBR 801/ip rule 30)# next-hop list 1Done!G350-001(super-PBR 801/ip rule 30)# destination-ip 149.49.123.0 0.0.0.255Done!G350-001(super-PBR 801/ip rule 30)# dscp 44Done!G350-001(super-PBR 801/ip rule 30)# exit284 Administration of the Avaya G350 Media Gateway