From: Dillon Yang (gzdillon@hotmail.com)
Date: Wed Mar 09 2005 - 10:15:57 GMT-3
Hi, folks:
In a case, the topology is :
R1(reflector)
|
FR
|
R5(Hub)----------R6(AS6)
|
FR
|
R2---------------R4(AS4)
R1, R2, R5 are in AS 3, The R2 and R5 can not receive external routes from R1. Why?
TIA
dillon
***************************************************
Changing Router to 3.3.1.1
r1#s ip bgp
BGP table version is 10, local router ID is 3.3.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
r>i197.68.1.0 3.3.2.2 100 0 4 254 i
r>i197.68.4.0 3.3.2.2 100 0 4 254 i
r>i197.68.5.0 3.3.2.2 100 0 4 254 i
*> 200.200.200.0 0.0.0.0 0 32768 i
r>i200.200.201.0 3.3.5.5 0 100 0 6 i
s ip bgp 197.68.1.0
BGP routing table entry for 197.68.1.0/24, version 7
Paths: (1 available, best #1, table Default-IP-Routing-Table, RIB-failure(17))
Not advertised to any peer
4 254, (Received from a RR-client)
3.3.2.2 (metric 801) from 3.3.2.2 (3.3.2.2)
Origin IGP, localpref 100, valid, internal, best
s ip bgp 200.200.201.0
BGP routing table entry for 200.200.201.0/24, version 3
Paths: (1 available, best #1, table Default-IP-Routing-Table, RIB-failure(17))
Not advertised to any peer
6, (Received from a RR-client)
3.3.5.5 (metric 801) from 3.3.5.5 (3.3.2.2)
Origin IGP, metric 0, localpref 100, valid, internal, best
r1#s ip os nei
Neighbor ID Pri State Dead Time Address Interface
3.3.5.5 1 FULL/DR 00:01:53 3.3.125.5 Serial0
s ip route | be Gateway
Gateway of last resort is not set
C 200.200.200.0/24 is directly connected, Loopback200
O E2 200.200.201.0/24 [110/2000] via 3.3.125.5, 00:17:44, Serial0
3.0.0.0/24 is subnetted, 8 subnets
C 3.3.1.0 is directly connected, Loopback0
O 3.3.2.0 [110/801] via 3.3.125.2, 00:34:03, Serial0
O E2 3.3.4.0 [110/5000] via 3.3.125.2, 00:34:03, Serial0
O 3.3.5.0 [110/801] via 3.3.125.5, 00:34:03, Serial0
O E2 3.3.6.0 [110/2000] via 3.3.125.5, 00:34:03, Serial0
O E2 3.3.24.0 [110/4000] via 3.3.125.2, 00:34:03, Serial0
O E2 3.3.56.0 [110/2000] via 3.3.125.5, 00:34:03, Serial0
C 3.3.125.0 is directly connected, Serial0
4.0.0.0/24 is subnetted, 1 subnets
O E2 4.4.4.0 [110/2000] via 3.3.125.5, 00:34:03, Serial0
O E2 197.68.1.0/24 [110/2000] via 3.3.125.2, 00:17:26, Serial0
O E2 197.68.5.0/24 [110/2000] via 3.3.125.2, 00:17:26, Serial0
O E2 197.68.4.0/24 [110/2000] via 3.3.125.2, 00:17:26, Serial0
O E2 192.3.2.0/24 [110/2000] via 3.3.125.5, 00:34:03, Serial0
150.100.0.0/24 is subnetted, 1 subnets
O E2 150.100.2.0 [110/5000] via 3.3.125.2, 00:34:03, Serial0
s run | be router bgp
router bgp 3
no synchronization
bgp router-id 3.3.1.1
bgp log-neighbor-changes
network 200.200.200.0
neighbor 3.3.2.2 remote-as 3
neighbor 3.3.2.2 update-source Loopback0
neighbor 3.3.2.2 route-reflector-client
neighbor 3.3.5.5 remote-as 3
neighbor 3.3.5.5 update-source Loopback0
neighbor 3.3.5.5 route-reflector-client
no auto-summary
***************************************************
Changing Router to 3.3.2.2
s ip bgp 197.68.1.0
BGP routing table entry for 197.68.1.0/24, version 2
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
3.3.1.1
4 254
3.3.4.4 (metric 1) from 3.3.4.4 (3.3.4.4)
Origin IGP, localpref 100, valid, external, best
s ip bgp 200.200.201.0
% Network not in table
r2#s ip os nei
Neighbor ID Pri State Dead Time Address Interface
3.3.5.5 1 FULL/DR 00:01:43 3.3.125.5 Serial0
r2#
s ip route | be Gateway
Gateway of last resort is not set
O E2 200.200.200.0/24 [110/2000] via 3.3.125.1, 00:30:36, Serial0
O E2 200.200.201.0/24 [110/2000] via 3.3.125.5, 00:17:55, Serial0
3.0.0.0/24 is subnetted, 8 subnets
O 3.3.1.0 [110/801] via 3.3.125.1, 00:30:36, Serial0
C 3.3.2.0 is directly connected, Loopback0
R 3.3.4.0 [120/1] via 3.3.24.4, 00:00:26, Serial1
O 3.3.5.0 [110/801] via 3.3.125.5, 00:30:36, Serial0
O E2 3.3.6.0 [110/2000] via 3.3.125.5, 00:30:36, Serial0
C 3.3.24.0 is directly connected, Serial1
O E2 3.3.56.0 [110/2000] via 3.3.125.5, 00:30:36, Serial0
C 3.3.125.0 is directly connected, Serial0
4.0.0.0/24 is subnetted, 1 subnets
O E2 4.4.4.0 [110/2000] via 3.3.125.5, 00:30:36, Serial0
B 197.68.1.0/24 [20/0] via 3.3.4.4, 00:17:37
B 197.68.5.0/24 [20/0] via 3.3.4.4, 00:17:37
B 197.68.4.0/24 [20/0] via 3.3.4.4, 00:17:37
O E2 192.3.2.0/24 [110/2000] via 3.3.125.5, 00:30:36, Serial0
150.100.0.0/24 is subnetted, 1 subnets
R 150.100.2.0 [120/1] via 3.3.24.4, 00:00:26, Serial1
s run | be router bgp
router bgp 3
no synchronization
bgp router-id 3.3.2.2
bgp log-neighbor-changes
neighbor 3.3.1.1 remote-as 3
neighbor 3.3.1.1 update-source Loopback0
neighbor 3.3.1.1 next-hop-self
neighbor 3.3.4.4 remote-as 4
neighbor 3.3.4.4 ebgp-multihop 255
neighbor 3.3.4.4 update-source Loopback0
no auto-summary
!
***************************************************
Changing Router to 3.3.5.5
s ip bgp 197.68.1.0
% Network not in table
s ip bgp 200.200.201.0
BGP routing table entry for 200.200.201.0/24, version 2
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
3.3.1.1
6
3.3.6.6 (metric 409600) from 3.3.6.6 (3.3.6.6)
Origin IGP, metric 0, localpref 100, valid, external, best
r5#s ip os nei
Neighbor ID Pri State Dead Time Address Interface
3.3.1.1 0 FULL/DROTHER 00:01:45 3.3.125.1 Serial0
3.3.2.2 0 FULL/DROTHER 00:01:45 3.3.125.2 Serial0
r5#
s ip route | be Gateway
Gateway of last resort is not set
O E2 200.200.200.0/24 [110/2000] via 3.3.125.1, 00:34:25, Serial0
B 200.200.201.0/24 [20/0] via 3.3.6.6, 00:18:05
3.0.0.0/24 is subnetted, 8 subnets
O 3.3.1.0 [110/801] via 3.3.125.1, 00:34:25, Serial0
O 3.3.2.0 [110/801] via 3.3.125.2, 00:34:25, Serial0
O E2 3.3.4.0 [110/5000] via 3.3.125.2, 00:34:25, Serial0
C 3.3.5.0 is directly connected, Loopback0
D 3.3.6.0 [90/409600] via 3.3.56.6, 00:36:21, Ethernet0
O E2 3.3.24.0 [110/4000] via 3.3.125.2, 00:34:25, Serial0
C 3.3.56.0 is directly connected, Ethernet0
C 3.3.125.0 is directly connected, Serial0
4.0.0.0/24 is subnetted, 1 subnets
D EX 4.4.4.0 [170/26163200] via 3.3.56.6, 00:36:21, Ethernet0
O E2 197.68.1.0/24 [110/2000] via 3.3.125.2, 00:17:48, Serial0
O E2 197.68.5.0/24 [110/2000] via 3.3.125.2, 00:17:48, Serial0
O E2 197.68.4.0/24 [110/2000] via 3.3.125.2, 00:17:48, Serial0
D 192.3.2.0/24 [90/2195456] via 3.3.56.6, 00:36:21, Ethernet0
150.100.0.0/24 is subnetted, 1 subnets
O E2 150.100.2.0 [110/5000] via 3.3.125.2, 00:34:25, Serial0
s run | be router bgp
router bgp 3
no synchronization
bgp router-id 3.3.2.2
bgp log-neighbor-changes
neighbor 3.3.1.1 remote-as 3
neighbor 3.3.1.1 update-source Loopback0
neighbor 3.3.1.1 next-hop-self
neighbor 3.3.6.6 remote-as 6
neighbor 3.3.6.6 ebgp-multihop 255
neighbor 3.3.6.6 update-source Loopback0
no auto-summary
end
=====================End==================
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:43 GMT-3