NSSA TSA
Friday, November 14, 2008
NOT SO STUBBY TOTALLY STUBBY AREA : THIS IS SIMILAR TO TSA..
SEE THE SIMILARITIES ARE
STUB ====== NSSA === CONFIG ON BOTH SIDES .. DISPAYS IA ROUTES
TSA=======NSSA TSA ==CONFIG ON ABR/ASBR ONLY ON ONE SIDE ----NOT EVEN ONLY IA ROUTES
configuration fairly simple ..
go to r2 and use no summary that's it
CODE
r2(config-router)#area 23 nssa no-su
r2(config-router)#area 23 nssa no-summary
r2(config-router)#
r2(config-router)#area 23 nssa no-summary
r2(config-router)#
CODE
r3#sir
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 10.1.23.1 to network 0.0.0.0
172.20.0.0/24 is subnetted, 1 subnets
C 172.20.200.0 is directly connected, Loopback20
10.0.0.0/24 is subnetted, 3 subnets
C 10.1.3.0 is directly connected, Loopback3
O 10.1.2.0 [110/65] via 10.1.23.1, 00:09:14, Serial2/1
C 10.1.23.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 10.1.23.1, 00:00:22, Serial2/1 ---------------------------- only one
r3#siod
OSPF Router with ID (172.20.200.1) (Process ID 1)
Router Link States (Area 23)
Link ID ADV Router Age Seq# Checksum Link count
10.1.2.1 10.1.2.1 563 0x8000000D 0x00ED97 3
172.20.200.1 172.20.200.1 562 0x8000000D 0x0019EE 3
Summary Net Link States (Area 23)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 10.1.2.1 26 0x80000001 0x00C265
Type-7 AS External Link States (Area 23)
Link ID ADV Router Age Seq# Checksum Tag
172.20.200.0 172.20.200.1 468 0x80000001 0x0076FC 0
r3#
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 10.1.23.1 to network 0.0.0.0
172.20.0.0/24 is subnetted, 1 subnets
C 172.20.200.0 is directly connected, Loopback20
10.0.0.0/24 is subnetted, 3 subnets
C 10.1.3.0 is directly connected, Loopback3
O 10.1.2.0 [110/65] via 10.1.23.1, 00:09:14, Serial2/1
C 10.1.23.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 10.1.23.1, 00:00:22, Serial2/1 ---------------------------- only one
r3#siod
OSPF Router with ID (172.20.200.1) (Process ID 1)
Router Link States (Area 23)
Link ID ADV Router Age Seq# Checksum Link count
10.1.2.1 10.1.2.1 563 0x8000000D 0x00ED97 3
172.20.200.1 172.20.200.1 562 0x8000000D 0x0019EE 3
Summary Net Link States (Area 23)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 10.1.2.1 26 0x80000001 0x00C265
Type-7 AS External Link States (Area 23)
Link ID ADV Router Age Seq# Checksum Tag
172.20.200.0 172.20.200.1 468 0x80000001 0x0076FC 0
r3#