3Com 10014299 manual Configuring IP, Routing Policy, With different weighting values, Protocol

■ Router A receives three static routes and the next hop is an Ethernet interface.

■ Router B is configured with filtering rules, making the three static routes partially visible and partially shielded. The routes of network segments 20.0.0.0 and 40.0.0.0 are visible and those of network segment 30.0.0.0 are filtered.

				Configuring IP Routing Policy 487
	Table 567 Display and Debug of IP Routing Policy
	Operation		Command
	Display routing policy		display route-policy [ policy-name]
	Display IP prefix list information		display ip ip-prefix [
			prefix-list-name ]
Configuring IP	This example explains how an OSPF protocol selectively imports an RIP route.
Routing Policy	As shown in the following figure, the router connects a campus network which
	uses RIP as its internal routing protocol and an external area network which uses
	OSPF routing protocol. The router advertises some routing information of the
	campus network around the external area network. To implement this, the OSPF
	protocol imports a routing policy to perform route filtering in order to import the
	RIP information. The routing policy consists of two nodes, and the routing
	information of 192.1.0.0/24 and 128.2.0.0/16 is advertised by the OSPF protocol
	with different weighting values.
	Figure 157 Networking diagram of OSPF importing route distributed by RIP
	192. 1. 0. 0/ 24	128.1.0.1		128. 1. 0. 0/ 16
	128. 2. 0. 0/ 16
	campus			ext er nal ar ea
	net wor k			net wor k

1Define IP prefix lists

[Router]ip ip-prefix p1 permit 192.1.1.0/24

[Router]ip ip-prefix p2 permit 128.2.0.0/16

2Configure Routing policy

[Router]route-policy r1 permit 10 [Router-route-policy]if-match ip address ip-prefix p1

[Router-route-policy]route-policy r1 permit 20

[Router-route-policy]if-match ip address ip-prefix p2 [Router-route-policy]quit

3Configure OSPF

	[Router]ospf enable
	[Router-ospf]import-route rip route-policy r1
	[Router-ospf]interface ethernet 0
	[Router-Ethernet0]ip address 128.1.0.1 255.255.255.0
	[Router-Ethernet0]ospf enable area 0
Configuring Filtering	I. Networking requirements
Route Information for	■ Router A is connected to Router B, and the link layer encapsulates PPP
OSPF
	protocol.