Netgear XCM8810 Chassis User Manual - Page 346
Routing Policies, Overview, Routing Policy File Syntax
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14. Routing Policies 14 This chapter includes the following sections: • Overview on page 346 • Routing Policy File Syntax on page 346 • Applying Routing Policies on page 352 • Policy Examples on page 353 Overview Routing policies are used to control the advertisement or recognition of routes communicated by routing protocols, such as Routing Information Protocol (RIP), Open Shortest Path First (OSPF), and Border Gateway Protocol (BGP). 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 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 XCM8800 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. Routing Policy File Syntax A routing policy file contains one or more policy rule entries. Each routing policy entry consists of: Chapter 14. Routing Policies | 346
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