From: Ouellette, Tim (tim.ouellette@eds.com)
Date: Sat Feb 22 2003 - 04:57:43 GMT-3
Well here goes. I labbed this up, wondering what kinda "stuff" I would see
so here goes......
Hopefully I'm setting this up as Hunt did...
r9--------------r8--------------r7--------------r6
area1 area0 area67 NSSA
10.1.89.x/24 10.1.78.x/24 10.1.67.x/24
R9 peers via ibgp to r7 (as3)
r9 to r8 is area 1(10.1.89.x/24)
r8 to r7 is area 0(10.1.78.x/24)
r7 to r6 is area 67 NSSA (10.1.67.x/24)
Each router has a loopback with there router number x 4 octets (r9 is
9.9.9.9)
r9 is generating 99.0.0.0 and sending it via ibgp to r7.
I redistributed that ibgp learned router into ospf on r7 and it showed up as
a type 5 into area 0 and a type 7 into the NSSA area
Although routing works a little weird because r7 thinks to get to 99.0.0.0
via 9.9.9.9 but with a nexthop of 10.1.78.8 but r8 doesn't know how to get
there via OSPF so there are routing issues (but that wasn't the point of the
lab)
Below are the appropriate configs.......
r9
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
network 9.9.9.9 0.0.0.0 area 1
network 10.1.89.9 0.0.0.0 area 1
!
router bgp 3
no synchronization
bgp log-neighbor-changes
network 99.0.0.0
neighbor 7.7.7.7 remote-as 3
r8
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
network 8.8.8.8 0.0.0.0 area 0
network 10.1.78.8 0.0.0.0 area 0
network 10.1.89.8 0.0.0.0 area 1
r8#r
O E2 99.0.0.0/8 [110/20] via 10.1.78.7, 00:10:08, Ethernet2
6.0.0.0/32 is subnetted, 1 subnets
O IA 6.6.6.6 [110/75] via 10.1.78.7, 00:11:51, Ethernet2
7.0.0.0/24 is subnetted, 1 subnets
O 7.7.7.0 [110/11] via 10.1.78.7, 00:11:51, Ethernet2
8.0.0.0/32 is subnetted, 1 subnets
C 8.8.8.8 is directly connected, Loopback0
9.0.0.0/32 is subnetted, 1 subnets
O 9.9.9.9 [110/65] via 10.1.89.9, 00:11:51, Serial1
10.0.0.0/24 is subnetted, 3 subnets
C 10.1.78.0 is directly connected, Ethernet2
O IA 10.1.67.0 [110/74] via 10.1.78.7, 00:11:52, Ethernet2
C 10.1.89.0 is directly connected, Serial1
60.0.0.0/24 is subnetted, 1 subnets
O E2 60.60.60.0 [110/5] via 10.1.78.7, 00:09:55, Ethernet2
r7
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 67 nssa default-information-originate
area 67 default-cost 20
redistribute bgp 3 metric 20 subnets
network 7.7.7.7 0.0.0.0 area 0
network 10.1.67.7 0.0.0.0 area 67
network 10.1.78.7 0.0.0.0 area 0
!
router bgp 3
no synchronization
bgp redistribute-internal
bgp log-neighbor-changes
neighbor 9.9.9.9 remote-as 3
neighbor 9.9.9.9 update-source Loopback0
r7#r
B 99.0.0.0/8 [200/20] via 9.9.9.9, 00:12:13 <--- this is the one
were looking for in OSPF
6.0.0.0/32 is subnetted, 1 subnets
O 6.6.6.6 [110/65] via 10.1.67.6, 00:12:14, Serial1
7.0.0.0/24 is subnetted, 1 subnets
C 7.7.7.0 is directly connected, Loopback0
8.0.0.0/32 is subnetted, 1 subnets
O 8.8.8.8 [110/11] via 10.1.78.8, 00:12:14, Ethernet2
9.0.0.0/32 is subnetted, 1 subnets
O IA 9.9.9.9 [110/75] via 10.1.78.8, 00:12:14, Ethernet2
10.0.0.0/24 is subnetted, 3 subnets
C 10.1.78.0 is directly connected, Ethernet2
C 10.1.67.0 is directly connected, Serial1
O IA 10.1.89.0 [110/74] via 10.1.78.8, 00:12:15, Ethernet2
60.0.0.0/24 is subnetted, 1 subnets
O N2 60.60.60.0 [110/5] via 10.1.67.6, 00:12:16, Serial1
r6
router ospf 1
log-adjacency-changes
area 67 nssa
redistribute rip metric 5 subnets <--- just added to make r6 an ASBR for
fun
network 6.6.6.6 0.0.0.0 area 67
network 10.1.67.6 0.0.0.0 area 67
r6#r
Gateway of last resort is 10.1.67.7 to network 0.0.0.0
O N2 99.0.0.0/8 [110/20] via 10.1.67.7, 00:13:56, Serial1
6.0.0.0/32 is subnetted, 1 subnets
C 6.6.6.6 is directly connected, Loopback0
7.0.0.0/24 is subnetted, 1 subnets
O IA 7.7.7.0 [110/65] via 10.1.67.7, 00:41:20, Serial1
8.0.0.0/32 is subnetted, 1 subnets
O IA 8.8.8.8 [110/75] via 10.1.67.7, 00:41:20, Serial1
9.0.0.0/32 is subnetted, 1 subnets
O IA 9.9.9.9 [110/139] via 10.1.67.7, 00:37:14, Serial1
10.0.0.0/24 is subnetted, 3 subnets
O IA 10.1.78.0 [110/74] via 10.1.67.7, 00:41:21, Serial1
C 10.1.67.0 is directly connected, Serial1
O IA 10.1.89.0 [110/138] via 10.1.67.7, 00:41:21, Serial1
60.0.0.0/24 is subnetted, 1 subnets
C 60.60.60.0 is directly connected, Loopback1
O*N2 0.0.0.0/0 [110/20] via 10.1.67.7, 00:13:42, Serial1
r6#od ns 99.0.0.0
OSPF Router with ID (6.6.6.6) (Process ID 1)
Type-7 AS External Link States (Area 67)
Routing Bit Set on this LSA
LS age: 1014
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 99.0.0.0 (External Network Number )
Advertising Router: 7.7.7.7
LS Seq Number: 80000001
Checksum: 0x3495
Length: 36
Network Mask: /8
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 10.1.67.7
External Route Tag: 0
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:28 GMT-3