3Com 5500G, 4210 Asbr route summarization configuration, Perform the following configuration

120CHAPTER 15: ROUTING CONFIGURATION GUIDE

#Configure ABR route summarization to summarize the routes 30.1.1.0/24 and 30.1.2.0/24 in area 2 into 30.1.0.0/22.

	[SwitchB-ospf-1] area 2
	[SwitchB-ospf-1-area-0.0.0.2] abr-summary 30.1.0.0 255.255.252.0
	[SwitchB-ospf-1-area-0.0.0.2] quit
	ASBR route summarization configuration 1
n	This configuration is applicable when an ASBR needs to summarize the Type-5
	LSAs or Type-7 LSAs. The following takes the ASBR route summarization
	configuration on Switch D as an example.
	Based on “OSPF basic configuration and area configuration” on page 118,
	perform the following configuration:
	# Configure ASBR route summarization to summarize the routes 1.1.4.0/24,
	1.1.5.0/24, 1.1.6.0/24, and 1.1.7.0/24 into 1.1.4.0/22 and to prevent 1.1.3.0/24
	from being advertised to any other area.
	[SwitchD-ospf-1] asbr-summary 1.1.4.0 255.255.252.0
	[SwitchD-ospf-1] asbr-summary 1.1.3.0 255.255.255.0 not-advertise
	ASBR route summarization configuration 2
n	This configuration is applicable when the ABR in an NSSA area needs to translate
	Type-7 LSAs into Type-5 LSAs and summarize the Type-5 LSAs.
	Based on “OSPF basic configuration and area configuration” on page 118,
	perform the following configuration:
	# Switch A is the ABR of the NSSA area. Configure ASBR route summarization to
	summarize the routes 2.1.4.0/24, 2.1.5.0/24, 2.1.6.0/24, and 2.1.7.0/24 into
	2.1.4.0/22 and to prevent 2.1.3.0/24 from being advertised.
	[SwitchA-ospf-1] asbr-summary 2.1.4.0 255.255.252.0
	[SwitchA-ospf-1] asbr-summary 2.1.3.0 255.255.255.0 not-advertise

Complete Configuration

n

ABR route summarization configuration

Configure ABR route summarization on Switch B.

■Perform the following configuration on Switch A.

#

vlan 100

#

vlan 200

#

interface Vlan-interface100

ip address 10.1.1.1 255.255.255.0

#

interface Vlan-interface200

ip address 20.1.1.1 255.255.255.0

#

ospf 1 router-id 1.1.1.1 area 0.0.0.1