3Com 5500G, 4210, 4200G manual ABRs/ASBRs, Perform the following configuration on Switch a

108CHAPTER 15: ROUTING CONFIGURATION GUIDE

#Redistribute the static route to specify Switch D as an ASBR.

	[SwitchD-ospf-1] import-route static
	[SwitchD-ospf-1] quit
n	■ The above-mentioned steps configure non-backbone areas, backbone area,
	and ABRs/ASBRs.
	■ By using the display ospf lsdb command on Switch C, you can see that Type-3
	LSAs, Type-4 LSAs, and Type-5 LSAs exist in the link state database (LSDB). You
	can control the generation of Type-4 LSAs and Type-5 LSAs by configuring the
	stub attribute.
	Configure a stub area (area 1)
	Based on the configuration in “Non-backbone area and backbone area
	configuration (area 1 is a non-backbone area)” on page 107, perform the
	following steps:
	# Configure area 1 as a stub area.
	[SwitchA-ospf-1-area-0.0.0.1] stub
	[SwitchC-ospf-1-area-0.0.0.1] stub
n	■ Use the display ospf lsdb command on Switch C to display the LSDB. You can
	see that no Type-4 LSAs or Type-5 LSAs exist in the LSDB. But a default Type-3
	LSA is added.
	Configure a totally stub area (area 1 is a totally stub area)
	Based on the configuration in “Non-backbone area and backbone area
	configuration (area 1 is a non-backbone area)” on page 107, perform the
	following steps:
	# Configure area 1 as a totally stub area.
	[SwitchA-ospf-1-area-0.0.0.1] stub no-summary
	[SwitchC-ospf-1-area-0.0.0.1] stub
n	■ To configure a stub area as a totally stub area, use the stub no-summary
	command on the ABR of the stub area.
	■ Use the display ospf lsdb command on Switch C to display the LSDB. You can
	see that no Type-3 LSAs, Type-4 LSAs, or Type-5 LSAs exist in the LSDB. But a
	Type-3 default LSA is added.

Complete Configuration Configuration information when area 1 is a non-backbone area:

■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