3com 5500 User Manual

C

HAPTER

 15: R

OUTING

 C

ONFIGURATION

 G

UIDE

If this feature is configured on the ABR of the NSSA area, the ABR will summarize 
Type-5 LSAs translated from Type-7 LSAs.

Figure 33   Network diagram for route summarization configuration

 

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

■

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.

Switch C

Vlan -int100
10 .1 .1.2/24

Vlan- int100
10.1.1.1 /24

Vlan -int300
20 .1.2.1/24

Vlan -int200
2 0.1 .1.2/24

Switch B

Vlan -int200
30 .1.1.1/24

Vlan -int200
30.1.1.2/24

Switch A

Vlan-int200
20.1.1 .1/24

Vlan- int3 00
30 .1.2.1/24

Switch D

Switch 5500

Release V03.02.04 

All versions 

Switch 5500G

Release V03.02.04 

All versions 

Switch 4500

Release V03.03.00 

All versions