From: Matthew Poole (matthew.poole@blueyonder.co.uk)
Date: Mon Jan 06 2003 - 16:15:30 GMT-3
Operator error........6 hrs worth, lol.
Big thanks to Eugene and Richard.
Richard pointed out that there was nothing wrong with the output, and Eugene
pointed me in the direction of changing metrics to get the result I was
expecting.
At least I learnt a bit about debugging BGP this afternoon..........
----- Original Message -----
From: "Matthew Poole" <matthew.poole@blueyonder.co.uk>
To: <ccielab@groupstudy.com>
Sent: Monday, January 06, 2003 3:27 PM
Subject: BGP Doyle P189
> I'm having problems with the above.
>
> I have all routers configured except burke (I did initially but regressed
> rying to fix this!).
>
> When I issue sh Ip bgp, I see all EIGRP routes twice (makes sense - two
> paths), with the best selected on all routers with exception of
Sugarbush -
> Sugarbush learns them both for a second, then loses the one through
Diamond.
>
> An example of show ip bgp 192.168.192.80 before and after.
>
> Anybody got any ideas why Sugarbush loses the path through Diamond? Or
tips
> on my config?
>
> Thanks in advance.
>
> R4-Sugarbush#sh ip bgp 192.168.192.0
> BGP routing table entry for 192.168.192.0/24, version 5
> Paths: (2 available, best #1, table Default-IP-Routing-Table)
> Flag: 0x208
> Advertised to non peer-group peers:
> 192.168.1.237
> 100
> 192.168.1.254 from 192.168.1.254 (192.168.199.2)
> Origin incomplete, metric 156160, localpref 100, valid, external,
best
> 100
> 192.168.1.237 from 192.168.1.237 (192.168.1.246)
> Origin incomplete, metric 409600, localpref 100, valid, internal
> R4-Sugarbush#sh ip bgp 192.168.192.0
> BGP routing table entry for 192.168.192.0/24, version 5
> Paths: (1 available, best #1, table Default-IP-Routing-Table)
> Flag: 0x208
> Advertised to non peer-group peers:
> 192.168.1.237
> 100
> 192.168.1.254 from 192.168.1.254 (192.168.199.2)
> Origin incomplete, metric 156160, localpref 100, valid, external,
best
>
> R4-Sugarbush#sh ip bgp
> BGP table version is 12, local router ID is 192.168.1.253
> 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
> *>i192.168.1.244/30 192.168.1.237 0 100 0 100 i
> *> 192.168.1.252/30 192.168.1.254 0 0 100 i
> *> 192.168.192.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.192.0/21 192.168.1.254 0 100 i
> * i 192.168.1.237 100 0 100 i
> *> 192.168.193.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.194.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.195.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.196.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.197.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> *> 192.168.198.0 192.168.1.254 156160 0 100 ?
> * i 192.168.1.237 409600 100 0 100 ?
> Network Next Hop Metric LocPrf Weight Path
> *> 192.168.199.0 192.168.1.254 0 0 100 ?
> * i 192.168.1.237 0 100 0 100 ?
> R4-Sugarbush#sh ip bgp
> BGP table version is 12, local router ID is 192.168.1.253
> 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
> *>i192.168.1.244/30 192.168.1.237 0 100 0 100 i
> *> 192.168.1.252/30 192.168.1.254 0 0 100 i
> *> 192.168.192.0 192.168.1.254 156160 0 100 ?
> *> 192.168.192.0/21 192.168.1.254 0 100 i
> * i 192.168.1.237 100 0 100 i
> *> 192.168.193.0 192.168.1.254 156160 0 100 ?
> *> 192.168.194.0 192.168.1.254 156160 0 100 ?
> *> 192.168.195.0 192.168.1.254 156160 0 100 ?
> *> 192.168.196.0 192.168.1.254 156160 0 100 ?
> *> 192.168.197.0 192.168.1.254 156160 0 100 ?
> *> 192.168.198.0 192.168.1.254 156160 0 100 ?
> *> 192.168.199.0 192.168.1.254 0 0 100 ?
> * i 192.168.1.237 0 100 0 100 ?
> R4-Sugarbush#sh ip bgp
>
> Configs below
>
> R4-Sugarbush#srb bgp
> router bgp 200
> no synchronization
> bgp log-neighbor-changes
> neighbor 192.168.1.237 remote-as 200
> neighbor 192.168.1.237 next-hop-self
> neighbor 192.168.1.254 remote-as 100
> no auto-summary
>
> -------------------------------------------------
>
> R3-Diamond#srb bgp
> router bgp 200
> no synchronization
> bgp log-neighbor-changes
> neighbor 192.168.1.238 remote-as 200
> neighbor 192.168.1.238 next-hop-self
> neighbor 192.168.1.245 remote-as 100
> no auto-summary
>
> -----------------------------------------------------------------
>
> R5-Stowe#srb eigrp
> router eigrp 100
> redistribute static
> passive-interface Serial0/0
> network 192.168.199.0
> no auto-summary
> no eigrp log-neighbor-changes
> !
> router bgp 100
> bgp log-neighbor-changes
> network 192.168.1.252 mask 255.255.255.252
> aggregate-address 192.168.192.0 255.255.248.0
> redistribute eigrp 100
> neighbor 192.168.1.253 remote-as 200
> neighbor 192.168.199.3 remote-as 100
> no auto-summary
>
> --------------------------------------
>
> R8-Mammoth#srb eigrp
> router eigrp 100
> redistribute static
> passive-interface Serial0
> network 192.168.199.0
> no auto-summary
> no eigrp log-neighbor-changes
> !
> router bgp 100
> bgp log-neighbor-changes
> network 192.168.1.244 mask 255.255.255.252
> aggregate-address 192.168.192.0 255.255.248.0
> redistribute eigrp 100
> neighbor 192.168.1.246 remote-as 200
> neighbor 192.168.199.2 remote-as 100
> no auto-summary
> .
.
This archive was generated by hypermail 2.1.4 : Sat Feb 01 2003 - 07:33:43 GMT-3