3Com 4210, 5500G, 4200G manual Routes through route summarization

118CHAPTER 15: ROUTING CONFIGURATION GUIDE

If this feature is configured on the ABR of the NSSA area, the ABR will summarize

Type-5 LSAs translated from Type-7 LSAs.

Network Diagram Figure 33	Network diagram for route summarization configuration
Switch A			Area 0	Switch B
		Vlan-int100
	10.1.1.1/24
				Vlan-int100	Vlan-int200
	Vlan-int200			10.1.1.2/24
					30.1.1.1/24
	20.1.1.1/24
Area 1	Vlan-int200			Area 2	Vlan-int200
NSSA					30.1.1.2/24
	20.1.1.2/24
	ASBR			Vlan- int300	ASBR
		Vlan-int300
				30.1.2.1/24	Switch D
Switch C 20.1.2.1/24

Networking and Network devices run OSPF to forward packets. Configure ABR and ASBR route Configuration summarization to reduce the routing information across areas and the size of Requirements routing tables on routers. Based on the actual needs, you can filter out specified

routes through route summarization.

Applicable Products

Product series	Software version	Hardware version
Switch 5500	Release V03.02.04	All versions
Switch 5500G	Release V03.02.04	All versions
Switch 4500	Release V03.03.00	All versions

Configuration Procedure OSPF basic configuration and area configuration

■Configure Switch A.

#Create VLANs and configure IP addresses for the VLAN interfaces. The configuration procedure is omitted.

#Configure OSPF basic functions. The configuration procedure is omitted.

#Configure the NSSA attribute of Switch A.

<SwitchA> system-view [SwitchA] ospf 1 [SwitchA-ospf-1] area 1 [SwitchA-ospf-1-area-0.0.0.1] nssa

[SwitchA-ospf-1-area-0.0.0.1] quit

■Configure Switch C.

#Create VLANs and configure IP addresses for the VLAN interfaces. The configuration procedure is omitted.

#Configure OSPF basic functions. The configuration procedure is omitted.