Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 3 OSPF Configuration Commands
3Com Corporation
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[3Com -ospf-100] area 2
[3Com -ospf-100-area-0.0.0.2] network 131.108.20.0 0.0.0.255
# Enable OSPF process 200 on the router and specify the number of the area where
the interface is located as 1.
[3Com ] ospf 200 vpn-instance vpn1
[3Com -ospf-200] area 1
[3Com -ospf-200-area-0.0.0.1] network 131.108.20.0 0.0.0.255
# Enable OSPF process 300 on the router and specify the number of the area where
the interface is located as 2.
[3Com ] ospf 300 vpn-instance vpn1
[3Com -ospf-300] area 2
[3Com -ospf-300-area-0.0.0.2] network 131.108.20.0 0.0.0.255
Network already set in OSPF process 200
3.1.33 nssa
Syntax
nssa [ default-route-advertise ] [ no-import-route ] [ no-summary ]
undo nssa
View
OSPF area view
Parameter
default-route-advertise: Only available for the NSSA ABR or ASBR. When using the
parameter at NSSA ABR to generate Type-7 LSAs for the default route no matter
whether there exists the default route 0.0.0.0 in the routing table. When using the
parameter at NSSA ASBR to generate Type-7 LSAs for the default route only if there
exists the default route 0.0.0.0 in the routing table.
no-import-route: Forbids AS external routes to be redistributed in to the NSSA as
Type-7 LSAs. This parameter is available for the NSSA ABR and for the ASBR in OSPF
AS, to ensure all external route information is redistributed into the OSPF areas.
no-summary: Only available for the NSSA ABR. When the parameter is selected, the
NSSA ABR advertises a default route via the Summary-LSAs (Type-3) in the area, but
no other Summary-LSAs to other areas.
Description
Use the nssa command to configure an area as NSSA area.
Use the undo nssa command to cancel the function.
By default, NSSA area is not configured.