Modifying Rules; Rule Criteria; Next Hop Lists - Avaya G250 Administration

Configuring policy-based routing
Note:
It is recommended to leave a gap between rule numbers, in order to leave room
Note:
for inserting additional rules at a later time. For example, ip-rule 10, ip-rule 20,
ip-rule 30.

Modifying rules

To modify a policy-based routing rule, you must enter the context of the rule and redefine the

rule criteria.

To enter a rule context:
1. Enter the context of the PBR list to which the rule belongs.
2. Type the command ip-rule, followed by the number of the rule you want to modify. For
example, to create rule 1, type ip-rule 1.
To view the rules that belong to a PBR list, enter the list's context and type ip show-rule.
Rule criteria
The rule criteria for PBR rules are largely the same as the rule criteria for other policy list rules.
Refer to Rule criteria
Unlike other policy lists, PBR lists do not use composite operations. Thus, there is no
operation command in the context of a PBR rule. Instead, PBR lists use next hop lists. For an
explanation of next hop lists, see
Use the next-hop list command, followed by the list number of a next hop list, to specify a
next hop list for the G250/G350 to apply to packets that match the rule. You can specify
Destination Based Routing instead of a next hop list, in which case the G250/G350 applies
destination-based routing to a packet when the packet matches the rule.
If the next hop list specified in the rule does not exist, the G250/G350 applies destination-based
routing to packets that match the rule.

Next hop lists

PBR rules include a next hop list. When the rule matches a packet, the G250/G350 routes the
packet according to the specified next hop list.
This section describes next hop lists and contains the following topics:
Next hop list overview
●
Modifying next hop lists
●
472 Administration for the Avaya G250 and Avaya G350 Media Gateways
on page 452.
Next hop lists
— an overview of next hop lists
— instructions on how to modify a next hop list
on page 472.