3Com 3500 manual Fields in the IP Ospf Policy Summary Display, Field Description

590CHAPTER 19: OPEN SHORTEST PATH FIRST (OSPF)

ip ospf policy Displays summary information about OSPF routing policies. summary

Valid Minimum Abbreviation

✓3500

✓9000

9400

3900

9300

ip o po s

Important Considerations

■Your system has one unified IP routing table. Routing policies allow you to control the flow of information among the network, the protocols, and the routing tables on your system.

■There are two classes of routing policies:

■Import policies — Control which OSPF non-self-originated external routes are stored in the routing table. OSPF import policies control only what the local router uses. They do not affect the propagation of non-self-originated external routes to other routers.

■Export policies — Used on OSPF boundary routers to control which self-originated external routing updates are placed in the link-state database for propagation over the network. In this way, export policies govern what other routers learn with regard to the local boundary router’s self-originated information.

■The system tracks policies that you define in both OSPF and Routing Information Protocol (RIP), so the indexes that are assigned to your policies may have gaps. For example, if you have OSPF policies 1 and 2, and RIP policies 3 through 6, the next policy is 7.

Fields in the IP OSPF Policy Summary Display

Field	Description
Action	Action for the route (accept or reject)
Idx	Index number of the interface
Protocol	Protocol (for example, OSPF)
Route	Source network
Source	Source router
Type	Whether the policy is an import or export policy
Wt	Administrative weight (range of values: 1 through 16)