Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring Policy-Based RoutingThe following example creates rule 1, which routes packets going to IP address149.49.43.210 with a DSCP value of 34 according to next hop list 1. The next step explainshow to define a next hop list. For additional details about PBR rules, see PBR Rules onpage 279.G350-001(super-PBR 802)# ip-rule 1G350-001(super-PBR 802/ip rule 1)# next-hop list 1Done!G350-001(super-PBR 802/ip rule 1)# destination-ip host 149.49.43.210Done!G350-001(super-PBR 802/ip rule 1)# dscp 43Done!G350-001(super-PBR 802/ip rule 1)#Note:Note:Note:Note:Rules do not include a default next hop list. Thus, if you do not include a next hoplist in the rule, the packet is routed according to destination-based routing, i.e.,the ordinary routing that would apply without policy-based routing.3. Define next hop lists.Use the exit command twice to return to general context. In general context, define all thenext hop lists that you have used in PBR rules.Note:You can also perform this step before defining PBR lists and rules.Use the ip next-hop-list command, followed by the number of the list, to define a nexthop list. In the next hop list context, use the following commands to define the next hops inthe list:●Use the next-hop-ip command, followed by the index number of the entry in the nexthop list, to define an IP address as a next hop.● Use the next-hop-interface command, followed by the index number of the entry inthe next hop list, to define an interface as a next hop.You can also use the name command to assign a name to the next hop list.Note:You cannot use a Fast Ethernet interface as an entry on a next hop list unless theinterface was previously configured to use PPPoE encapsulation or a GREtunnel. See Configuring PPPoE on page 91 and Configuring GRE tunneling onpage 166.A next hop list can include the value NULL0. When the next hop is NULL0, the G350 dropsthe packet.The following example creates next hop list 1, named “Voice to HQ”, with three entries:● The first entry is IP address 172.16.1.221.● The second entry is Serial interface 2/1:1.Issue 3 January 2005 277