From: Michael Wong (Michael.Wong@xxxxxxxxxx)
Date: Sun Aug 19 2001 - 00:24:26 GMT-3
OK .... here we go (ignore the real names of the routers), I attached the confi
gs and outputs for Tahoe, Vail, Aspen, Telluride and Alta.
All the routes from Alta seem to be propagated out to the other AS's, however n
othing is being propagated into Alta. It funny how Tahoe gets the routes, but A
lta doesn't ..... am I going crazy here ????!!!!
Thanking you in advance ...... MW :)
*** Tahoe ***
!
router bgp 300
bgp log-neighbor-changes
network 192.168.1.212 mask 255.255.255.252
network 192.168.250.0
neighbor 192.168.1.209 remote-as 100
neighbor 192.168.1.209 default-originate
!
p1r1#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
B 192.168.75.0/24 [20/0] via 192.168.1.209, 00:34:58
B 192.168.200.0/24 [20/0] via 192.168.1.209, 01:19:06
C 192.168.250.0/24 is directly connected, Loopback0
B 192.168.50.0/24 [20/0] via 192.168.1.209, 00:34:58
192.168.1.0/30 is subnetted, 4 subnets
B 192.168.1.200 [20/0] via 192.168.1.209, 00:34:58
B 192.168.1.216 [20/0] via 192.168.1.209, 01:19:06
C 192.168.1.208 is directly connected, Serial0/0
C 192.168.1.212 is directly connected, Loopback1
B 192.168.100.0/24 [20/0] via 192.168.1.209, 01:19:06
p1r1#sh ip bgp
BGP table version is 17, local router ID is 192.168.250.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 192.168.1.200/30 192.168.1.209 0 100 400 i
*> 192.168.1.212/30 0.0.0.0 0 32768 i
*> 192.168.1.216/30 192.168.1.209 0 100 200 i
*> 192.168.50.0 192.168.1.209 0 100 400 i
*> 192.168.75.0 192.168.1.209 0 100 400 i
*> 192.168.100.0 192.168.1.209 0 100 200 i
*> 192.168.200.0 192.168.1.209 0 100 200 i
*> 192.168.250.0 0.0.0.0 0 32768 i
p1r1#sh ip bgp summary
BGP router identifier 192.168.250.1, local AS number 300
BGP table version is 17, main routing table version 17
8 network entries and 8 paths using 968 bytes of memory
3 BGP path attribute entries using 292 bytes of memory
BGP activity 12/4 prefixes, 12/4 paths
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRc
d
192.168.1.209 4 100 88 84 17 0 0 01:19:42 6
*** Vail ***
!
router ospf 100
redistribute bgp 100 subnets
network 192.168.1.220 0.0.0.3 area 0
log-adjacency-changes
!
router bgp 100
bgp log-neighbor-changes
neighbor 192.168.1.197 remote-as 100
neighbor 192.168.1.197 next-hop-self
neighbor 192.168.1.210 remote-as 300
neighbor 192.168.1.225 remote-as 200
!
p1r5#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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 192.168.1.210 to network 0.0.0.0
O E2 192.168.75.0/24 [110/1] via 192.168.1.222, 00:23:56, Serial1/1
B 192.168.200.0/24 [20/0] via 192.168.1.225, 01:08:09
B 192.168.250.0/24 [20/0] via 192.168.1.210, 01:08:30
O E2 192.168.50.0/24 [110/1] via 192.168.1.222, 00:23:56, Serial1/1
192.168.1.0/30 is subnetted, 7 subnets
C 192.168.1.224 is directly connected, Serial1/3
O E2 192.168.1.200 [110/1] via 192.168.1.222, 00:23:56, Serial1/1
O 192.168.1.196 [110/791] via 192.168.1.222, 00:36:37, Serial1/1
B 192.168.1.216 [20/0] via 192.168.1.225, 01:08:10
C 192.168.1.220 is directly connected, Serial1/1
C 192.168.1.208 is directly connected, Serial1/0
B 192.168.1.212 [20/0] via 192.168.1.210, 01:08:31
B 192.168.100.0/24 [20/0] via 192.168.1.225, 01:08:10
B* 0.0.0.0/0 [20/0] via 192.168.1.210, 00:33:44
p1r5#sh ip bgp
BGP table version is 18, local router ID is 192.168.1.226
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 192.168.1.210 0 300 i
*>i192.168.1.200/30 192.168.1.205 0 100 0 400 i
*> 192.168.1.212/30 192.168.1.210 0 0 300 i
*> 192.168.1.216/30 192.168.1.225 0 0 200 i
*>i192.168.50.0 192.168.1.205 0 100 0 400 i
*>i192.168.75.0 192.168.1.205 0 100 0 400 i
*> 192.168.100.0 192.168.1.225 0 0 200 i
*> 192.168.200.0 192.168.1.225 0 0 200 i
*> 192.168.250.0 192.168.1.210 0 0 300 i
*** Aspen ***
!
router ospf 100
log-adjacency-changes
network 192.168.1.0 0.0.0.255 area 0
!
p1r2#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
O E2 192.168.75.0/24 [110/1] via 192.168.1.197, 00:26:02, Ethernet0/0
O E2 192.168.200.0/24 [110/1] via 192.168.1.221, 00:38:44, Serial0/0
O E2 192.168.250.0/24 [110/1] via 192.168.1.221, 00:38:44, Serial0/0
O E2 192.168.50.0/24 [110/1] via 192.168.1.197, 00:26:03, Ethernet0/0
192.168.1.0/30 is subnetted, 5 subnets
O E2 192.168.1.200 [110/1] via 192.168.1.197, 00:26:03, Ethernet0/0
C 192.168.1.196 is directly connected, Ethernet0/0
O E2 192.168.1.216 [110/1] via 192.168.1.221, 00:38:44, Serial0/0
C 192.168.1.220 is directly connected, Serial0/0
O E2 192.168.1.212 [110/1] via 192.168.1.221, 00:38:45, Serial0/0
O E2 192.168.100.0/24 [110/1] via 192.168.1.221, 00:38:45, Serial0/0
*** Telluride ***
!
router ospf 100
log-adjacency-changes
redistribute bgp 100 subnets
network 192.168.1.196 0.0.0.3 area 0
!
router bgp 100
bgp log-neighbor-changes
neighbor 192.168.1.205 remote-as 400
neighbor 192.168.1.221 remote-as 100
neighbor 192.168.1.221 next-hop-self
!
p1r6#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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 not set
B 192.168.75.0/24 [20/0] via 192.168.1.205, 00:27:17
O E2 192.168.200.0/24 [110/1] via 192.168.1.198, 00:39:59, FastEthernet0/0
O E2 192.168.250.0/24 [110/1] via 192.168.1.198, 00:39:59, FastEthernet0/0
B 192.168.50.0/24 [20/0] via 192.168.1.205, 00:27:17
192.168.1.0/30 is subnetted, 6 subnets
B 192.168.1.200 [20/0] via 192.168.1.205, 00:27:17
C 192.168.1.204 is directly connected, FastEthernet0/1
C 192.168.1.196 is directly connected, FastEthernet0/0
O E2 192.168.1.216 [110/1] via 192.168.1.198, 00:40:00, FastEthernet0/0
O 192.168.1.220 [110/65] via 192.168.1.198, 00:40:00, FastEthernet0/0
O E2 192.168.1.212 [110/1] via 192.168.1.198, 00:40:00, FastEthernet0/0
O E2 192.168.100.0/24 [110/1] via 192.168.1.198, 00:40:00, FastEthernet0/0
p1r6#sh ip bgp
BGP table version is 12, local router ID is 192.168.1.206
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* i0.0.0.0 192.168.1.210 100 0 300 i
*> 192.168.1.200/30 192.168.1.205 0 0 400 i
* i192.168.1.212/30 192.168.1.210 0 100 0 300 i
* i192.168.1.216/30 192.168.1.225 0 100 0 200 i
*> 192.168.50.0 192.168.1.205 0 0 400 i
*> 192.168.75.0 192.168.1.205 0 0 400 i
* i192.168.100.0 192.168.1.225 0 100 0 200 i
* i192.168.200.0 192.168.1.225 0 100 0 200 i
* i192.168.250.0 192.168.1.210 0 100 0 300 i
p1r6#sh ip bgp summary
BGP router identifier 192.168.1.206, local AS number 100
BGP table version is 12, main routing table version 12
9 network entries and 9 paths using 1197 bytes of memory
4 BGP path attribute entries using 240 bytes of memory
3 BGP AS-PATH entries using 72 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP activity 13/175 prefixes, 13/4 paths, scan interval 15 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRc
d
192.168.1.205 4 400 48 49 12 0 0 00:30:32 3
192.168.1.221 4 100 49 51 12 0 0 00:43:36 6
*** Alta ***
!
router bgp 400
bgp log-neighbor-changes
network 192.168.1.200 mask 255.255.255.252
network 192.168.50.0
network 192.168.75.0
neighbor 192.168.1.206 remote-as 100
!
p1r3#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C 192.168.75.0/24 is directly connected, Loopback1
C 192.168.50.0/24 is directly connected, Loopback0
192.168.1.0/30 is subnetted, 2 subnets
C 192.168.1.200 is directly connected, Loopback2
C 192.168.1.204 is directly connected, Ethernet0/0
p1r3#sh ip bgp
BGP table version is 6, local router ID is 192.168.75.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 192.168.1.200/30 0.0.0.0 0 32768 i
*> 192.168.50.0 0.0.0.0 0 32768 i
*> 192.168.75.0 0.0.0.0 0 32768 i
p1r3#sh ip bgp summary
BGP router identifier 192.168.75.1, local AS number 400
BGP table version is 6, main routing table version 6
3 network entries and 3 paths using 363 bytes of memory
1 BGP path attribute entries using 148 bytes of memory
BGP activity 4/1 prefixes, 4/1 paths
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRc
d
192.168.1.206 4 100 34 33 6 0 0 00:29:35 0
-----Original Message-----
From: Peter Rybaczyk [mailto:psrsam@globalins.com]
Sent: Sunday, 19 August 2001 2:23 am
To: Michael Wong
Cc: Groupstudy - CCIELAB (E-mail)
Subject: Re: BGP synchronisation: Doyle page 175
Michael,
I duplicated the setup but can't duplicate the problem. Can you send relevent p
ortions of your configs (BGP and OSPF parts) for all of the routers? Also the I
P table for Telluride would be helpful.
Thanks.
Peter
Michael Wong wrote:
> BGP gurus ..... I am trying to do the example in Doyle Vol II, page 175 with
BGP synchronisation and OSPF.
>
> I have BGP routes going between AS100, AS300 and AS200 ..... however for some
reason the routes from these AS's are not being advertised into AS400. If I do
a debug on the Telluride router I get the output below. I cannot seem to find
what this output means anywhere on the Cisco site. I am assuming it's got somet
hing to do with these routes not being able to be propagated to Alta.
>
> 00:07:16: BGP(0): no valid path for 0.0.0.0/0
> 00:07:16: BGP(0): no valid path for 192.168.1.208/30
> 00:07:16: BGP(0): no valid path for 192.168.1.212/30
> 00:07:16: BGP(0): no valid path for 192.168.1.216/30
> 00:07:16: BGP(0): no valid path for 192.168.1.224/30
> 00:07:16: BGP(0): no valid path for 192.168.100.0/24
> 00:07:16: BGP(0): no valid path for 192.168.200.0/24
> 00:07:16: BGP(0): no valid path for 192.168.250.0/24
>
> If I look in Alta's BGP routing table, all I see is the following (no routes
from the other AS's), even though it has an adjacency with Telluride ....
>
> BGP table version is 6, local router ID is 192.168.75.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i - interna
l
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> *> 192.168.1.200/30 0.0.0.0 0 32768 i
> *> 192.168.50.0 0.0.0.0 0 32768 i
> *> 192.168.75.0 0.0.0.0 0 32768 i
>
> Telluride's BGP table has all the routes so I'm assuming that synchronisation
is OK.
>
> BGP table version is 6, local router ID is 192.168.1.206
> Status codes: s suppressed, d damped, h history, * valid, > best, i - interna
l
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> * i0.0.0.0 192.168.1.221 100 0 100 i
> *> 192.168.1.200/30 192.168.1.205 0 0 400 i
> * i192.168.1.212/30 192.168.1.221 0 100 0 300 i
> * i192.168.1.216/30 192.168.1.221 0 100 0 100 i
> *> 192.168.50.0 192.168.1.205 0 0 400 i
> *> 192.168.75.0 192.168.1.205 0 0 400 i
> * i192.168.100.0 192.168.1.221 0 100 0 100 i
> * i192.168.200.0 192.168.1.221 409600 100 0 100 i
> * i192.168.250.0 192.168.1.221 0 100 0 300 i
>
> The previous example used the same network without BGP synchronisation and ju
st using IBGP, this was OK and routes were propagated into AS400.
>
> Help please ....... MW
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:31:53 GMT-3