Administration of the Avaya G350 Media Gateway - Avaya Support

PBR RulesPBR RulesEach PBR list can have up to 1,500 rules. The first rule that matches the packet specifies thenext hop list for the packet. If no rule matches the packet, the packet is routed according to thedefault rule.This section provides information on how to configure rules in a PBR list and contains thefollowing topics:●●●Overview of rule criteria — an overview of the criteria that can be used in configuring PBRrulesModifying rules — instructions on how to create and edit a PBR ruleRule criteria — instructions on how to configure a PBR rule’s criteriaOverview of rule criteriaYou can configure policy rules to match packets based on one or more of the following criteria:●●●●●●Source IP address, or a range of addressesDestination IP address or a range of addressesIP protocol, such as TCP, UDP, ICMP, IGMPSource TCP or UDP port or a range of portsDestination TCP or UDP port or a range of portsICMP type and code● DSCP fieldUse IP wildcards to specify a range of source or destination IP addresses. The zero bits in thewildcard correspond to bits in the IP address that remain fixed. The one bits in the wildcardcorrespond to bits in the IP address that can vary. Note that this is the opposite of how bits areused in a subnet mask.Note:Note:Note:When you use destination and source ports in a PBR rule, policy-based routingdoes not catch fragments.Note:It is recommended to leave a gap between rule numbers, in order to leave roomfor inserting additional rules at a later time. For example, ip-rule 10, ip-rule 20,ip-rule 30.Issue 3 January 2005 279