From: perkinsr@WellsFargo.COM
Date: Mon Sep 09 2002 - 19:16:30 GMT-3
Here is a simple scenario for trying some basic BGP testing:
R7
/ \
R13 R14
R13 and R14 both have the networks 10.10.10.0 and 11.11.11.0 and 12.12.12.0
as loopbacks and are redistributing to R7. R13 is using redis conn and R14
is using network statements. Once R13 forms a peer relationship with R7 it
sees both its routes and the R14's routes, but R14s go away after about a
minute and I only see R13s routes in the BGP table of R13. R7 always sees
both sets of routes.
Here are the configs:
(AS is same as router number)
router bgp 7
bgp log-neighbor-changes
network 10.10.10.0 mask 255.255.255.0 backdoor
neighbor 13.13.13.13 remote-as 13
neighbor 14.14.14.14 remote-as 14
router bgp 13
bgp log-neighbor-changes
redistribute connected
neighbor 13.13.13.7 remote-as 7
no auto-summary
router bgp 14
bgp log-neighbor-changes
network 10.10.10.0 mask 255.255.255.0
network 11.11.11.0 mask 255.255.255.0
network 12.12.12.0 mask 255.255.255.0
neighbor 14.14.14.7 remote-as 7
neighbor 14.14.14.7 route-map test out
route-map test permit 10
set as-path prepend 45 62 75 38
R7#b
BGP table version is 16, local router ID is 14.14.14.7
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
*> 10.10.10.0/24 13.13.13.13 0 0 13 ?
* 14.14.14.14 0 0 14 45 62 75 38
i
*> 11.11.11.0/24 13.13.13.13 0 0 13 ?
* 14.14.14.14 0 0 14 45 62 75 38
i
*> 12.12.12.0/24 13.13.13.13 0 0 13 ?
* 14.14.14.14 0 0 14 45 62 75 38
i
*> 13.13.13.0/24 13.13.13.13 0 0 13 ?
R7#
R13 after routes disapear:
R13#b
BGP table version is 5, local router ID is 12.12.12.12
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
*> 10.10.10.0/24 0.0.0.0 0 32768 ?
*> 11.11.11.0/24 0.0.0.0 0 32768 ?
*> 12.12.12.0/24 0.0.0.0 0 32768 ?
*> 13.13.13.0/24 0.0.0.0 0 32768 ?
R13#
R13, shortly after a clear ip bgp *, before routes diapear:
R13#b
BGP table version is 8, local router ID is 12.12.12.12
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
*> 10.10.10.0/24 0.0.0.0 0 32768 ?
* 13.13.13.7 0 7 14 45 62 75
38 i
*> 11.11.11.0/24 0.0.0.0 0 32768 ?
* 13.13.13.7 0 7 14 45 62 75
38 i
*> 12.12.12.0/24 0.0.0.0 0 32768 ?
* 13.13.13.7 0 7 14 45 62 75
38 i
*> 13.13.13.0/24 0.0.0.0 0 32768 ?
R13#
R14#b
BGP table version is 12, local router ID is 12.12.12.12
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
* 10.10.10.0/24 14.14.14.7 0 7 13 ?
*> 0.0.0.0 0 32768 i
* 11.11.11.0/24 14.14.14.7 0 7 13 ?
*> 0.0.0.0 0 32768 i
* 12.12.12.0/24 14.14.14.7 0 7 13 ?
*> 0.0.0.0 0 32768 i
*> 13.13.13.0/24 14.14.14.7 0 7 13 ?
R14#
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:47 GMT-3