Routing policies are used to control the advertisement or recognition of routes communicated by routing protocols, such as RIP (Routing Information Protocol), OSPF (Open Shortest Path First), Intermediate System-Intermediate System (IS-IS) and BGP (Border Gateway Protocol).
Routing policies can be used to “hide” entire networks or to trust only specific sources for routes or ranges of routes. The capabilities of routing policies are specific to the type of routing protocol involved, but these policies are sometimes more efficient and easier to implement than access lists.
Routing policies can also modify and filter routing information received and advertised by a switch.
A similar type of policy is an ACL (Access Control List) policy, used to control, at the hardware level, the packets accessing the switch. ACL policy files and routing policy files are both handled by the policy manager and the syntax for both types of files is checked by the policy manager.
Note
Although ExtremeXOS does not prohibit mixing ACL and routing type entries in a policy file, it is strongly recommended that you do not mix the entries, and you use separate policy files for ACL and routing policies.
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