Cisco press CCNP ROUTE 642 902 Quick Reference by Denise Donohue

By Denise Donohue

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Next, apply the route map either to an inbound interface or to the router itself to control locally generated traffic. The following configuration example shows a route map named LOCAL that matches the source addresses in access list 1. 1 to this traffic. Because it is applied to the local router, it will be used only for traffic generated by the router itself. 1 ! Router(config)# ip local policy route-map LOCAL Route map INT, shown in the following example, has no match condition and thus matches all traffic.

It then submits these paths for inclusion in the routing table, or forwarding database. © 2010 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 156 for more details. [ 41 ] CCNP ROUTE 642-902 Quick Reference by Denise Donohue CHAPTER 3 OSPF OSPF Network Structure OSPF routing domains are broken up into areas. An OSPF network must contain an area 0 and might contain other areas. The SPF algorithm runs within an area, and interarea routes are passed between areas.

Seeing this tells each router that they have bidirectional communication. In addition, two routers must be on a common subnet for a neighbor relationship to be formed. ) Certain parameters within the OSPF Hellos must also match for two routers to become neighbors. They include n Hello/dead timers n Area ID n Authentication type and password n Stub area flag OSPF routers can be neighbors without being adjacent. Only adjacent neighbors exchange routing updates and synchronize their databases. On a point-to-point link, an adjacency is established between the two routers when they can communicate.

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