From: Connary, Julie Ann (jconnary@xxxxxxxxx)
Date: Sun Dec 31 2000 - 13:43:36 GMT-3
Hi All,
has anyone seen the following. I am doing the fatkid lab - advanced bgp.
I have the following setup
Term-Serv
AS-100
l 192.19.15.0
|
Router 4
AS 10600
AS 200 (confederation id)
| .4
| 10.4.3..0
| .3
router 3 - no BGP
| .3
| 10.5.3.0
| .5
| .5 10.5.2.0 .2
Router 5 -----------------------------------------------Router 2
AS 10060 AS 10060
AS 200 (confederation id) AS 200 (confederation id)
| 206.11.20.64 / 206.11.20.16
| /
| /
Router 1------------------------------------------
AS 300
On R4 I see the following when I do a show ip bgp and show ip bgp 10.4.3.0
r4#show ip bgp
BGP table version is 6, local router ID is 10.0.0.4
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
*> 10.1.1.0/24 192.19.15.1 0 0 100 i
* 10.4.3.0/24 10.5.3.3 1 100 0 (10060) i
*> 10.5.3.3 1 100 0 (10060) i
*> 20.1.1.0/24 192.19.15.1 0 0 100 i
*> 22.1.1.0/24 192.19.15.1 0 0 100 i
*> 24.1.1.0/24 192.19.15.1 0 0 100 i
* 206.11.0.0/16 206.11.20.65 100 0 (10060) 300 i
* 206.11.20.17 100 0 (10060) 300 i
4#show ip bgp 10.4.3.0
BGP routing table entry for 10.4.3.0/24, version 6
Paths: (2 available, best #2, advertised over EBGP)
(10060)
10.5.3.3 (metric 1) from 10.5.2.5 (10.0.0.5)
Origin IGP, metric 1, localpref 100, valid, confed-external
(10060)
10.5.3.3 (metric 1) from 10.5.2.2 (10.0.0.2)
Origin IGP, metric 1, localpref 100, valid, confed-external, best
Then on R1- it sees a 10.4.3.0 route:
r1#show ip bgp
BGP table version is 135, local router ID is 206.11.4.1
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
*> 10.1.1.0/24 206.11.20.18 0 200 100 i
* 206.11.20.66 0 200 100 i
* 10.4.3.0/24 206.11.20.66 1 0 200 i
*> 206.11.20.18 0 200 i
*> 20.1.1.0/24 206.11.20.18 0 200 100 i
* 206.11.20.66 0 200 100 i
*> 22.1.1.0/24 206.11.20.18 0 200 100 i
* 206.11.20.66 0 200 100 i
*> 24.1.1.0/24 206.11.20.18 0 200 100 i
* 206.11.20.66 0 200 100 i
*> 206.11.0.0/16 0.0.0.0 32768 i
s> 206.11.4.0 0.0.0.0 0 32768 i
s> 206.11.5.0 0.0.0.0 0 32768 i
s> 206.11.6.0 0.0.0.0 0 3276
Question is - why do I not see this for the 10.5.2.0 network?
Here are my BGP configs for 2, 5 and 4
Router 4 (OS Version: flash:c2500-ds-l.112-4.f1.bin)
router bgp 10600
bgp confederation identifier 200
bgp confederation peers 10060
neighbor 10.5.2.2 remote-as 10060
neighbor 10.5.2.2 ebgp-multihop 255
neighbor 10.5.2.2 update-source Ethernet0
neighbor 10.5.2.2 next-hop-self
neighbor 10.5.2.5 remote-as 10060
neighbor 10.5.2.5 ebgp-multihop 255
neighbor 10.5.2.5 update-source Ethernet0
neighbor 10.5.2.5 next-hop-self
neighbor 192.19.15.1 remote-as 100
Router 2 ( OS Version: flash:c2500-ds-l.112-4.f1.bin)
router bgp 10060
bgp confederation identifier 200
bgp confederation peers 10600
neighbor 10.4.3.4 remote-as 10600
neighbor 10.4.3.4 ebgp-multihop 255
neighbor 10.4.3.4 update-source Ethernet0
neighbor 10.5.2.5 remote-as 10060
neighbor 206.11.20.17 remote-as 300
router 5 (os Version: flash:mc3810-a2binr3v2-mz_113-1_MA7.bin)
router bgp 10060
bgp confederation identifier 200
bgp confederation peers 10600
network 10.4.3.0 mask 255.255.255.0
neighbor 10.4.3.4 remote-as 10600
neighbor 10.4.3.4 ebgp-multihop 255
neighbor 10.4.3.4 update-source Ethernet0
neighbor 10.5.2.2 remote-as 10060
neighbor 206.11.20.65 remote-as 300
no auto-summary
Is this normal? Is this what R1 should see - a route only to 10.4.3.0 network?
Julie Ann
------------------------------------------------------------------------
Julie Ann Connary
| | Network Consulting Engineer
||| ||| Federal Support Program
.|||||. .|||||. 13635 Dulles Technology Drive,
Herndon VA 20171
.:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
c i s c o S y s t e m s Email: jconnary@cisco.com
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