SignaMax 065-7434, Configuration Manual

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Command Description
Switch-A(config)#
router ospf 1
Enter the OSPF configuration
mode
Switch-A(config-ospf)#
distance ospf external 120
inter-area 90 intra-area 60
Modify the distance of various
OSPF route types.
Switch-A(config-ospf)#exit
The displayed result after the modification:
Switch-A#show ip route ospf
Codes: C - connected, S - static, R - RIP, O - OSPF, OE-OSPF
External, M - Management
D - Redirect, E - IRMP, EX - IRMP external, B - BGP, i-ISIS
Gateway of last resort is not set
O 26.26.26.26/32 [60/2] via 70.1.1.2, 00:00:03, vlan1
O 30.1.1.1/32 [90/2] via 70.1.1.2, 00:00:03, vlan1
OE 77.77.77.77/32 [120/20] via 70.1.1.2, 00:00:03, vlan1
C o n f i g u r e O S P F N S S A A r e a
Area 1 can be configured as NSSA area. If switch-C brings in outer routes,
it is NSSA-LSA in area 1 to notify the outer route. On switch-B, the
NSSA-LSA is converted to AS External LSA and is notified to area 0.
For example:
Switch-B configuration:
Command Description
Switch-B(config)#
router ospf 1
Enter the OSPF configuration
mode
Switch-B(config-ospf)#
area 1 nssa
Configure area 1 as NSSA area
Switch-B(config-ospf)#exit
Switch-C configuration:
Command Description
Switch-C(config)#
router ospf 1
Enter the OSPF configuration
mode
Switch-C (config-ospf)#
area 1 nssa
Configure area 1 as NSSA area
Switch-C(config-ospf)#
redistribute static
Bring in router route in NSSA
area
Switch-C(config-ospf)#exit
From the LSA database of area 1 on switch-B, you can see the
corresponding NSSA-LSA, as well as the converted AS External LSA.
On switch-B, the outer route labeled as N2 type can be learned; on
switch-A, the outer route labeled as E2 type can be learned.