[6bone] Instability incarnate
Daniel Austin
Daniel Austin" <daniel@kewlio.net
Thu, 1 Aug 2002 21:21:29 +0100
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Hello,
3ffe:80d0:fffc:10::40
4 2042 5096 5609 0 0 0 1d03h13m 230
AS24765 <--> AS2042 no flaps between us and mimos...
With Thanks,
Daniel Austin,
Managing Director,
kewlio.net Limited.
<daniel@kewlio.net>
----- Original Message -----
From: "John Fraizer" <tvo@EnterZone.Net>
To: <6bone@ISI.EDU>
Sent: Thursday, August 01, 2002 9:08 PM
Subject: [6bone] Instability incarnate
>
> Serious flappage going on here...(and it ain't us!)
>
> BGP routing table entry for 3FFE:1CED::/32, version 90420
> Paths: (2 available, best #2)
> Advertised to non peer-group peers:
> 2001:6E0::2 2001:768:E:5::1 3FFE:80B0:100:8000::3 3FFE:8100:102::1:9
> 3FFE:8100:200:2FFF::9 195.74.212.38
> 45328 2042 24765 13944 (history entry)
> 3FFE:8100:200:2FFF::9 from 3FFE:8100:200:2FFF::9 (131.211.28.48)
> Origin IGP, localpref 100, external
> Dampinfo: penalty 7047, flapped 126 times in 07:28:28
> 15589 24765 13944, (received & used)
> 3FFE:8170:1:10::1 from 3FFE:8170:1:10::1 (192.168.1.12)
> Origin IGP, localpref 100, valid, external, best
>
>
> BGP routing table entry for 2001:4F0::/35, version 89613
> Paths: (5 available, best #5)
> Advertised to non peer-group peers:
> 2001:6E0::2 2001:768:E:5::1 3FFE:80B0:100:8000::3 3FFE:8100:102::1:9
> 3FFE:8100:200:2FFF::9 195.74.212.38
> 45328 2042 24765 13944, (suppressed due to dampening), (received & used)
> 3FFE:8100:200:2FFF::9 from 3FFE:8100:200:2FFF::9 (131.211.28.48)
> Origin IGP, localpref 100, valid, external
> Dampinfo: penalty 6134, flapped 128 times in 07:31:31, reuse in
00:45:30
> 8379 24765 13944, (received & used)
> 2001:768:E:5::1 from 2001:768:E:5::1 (195.143.108.166)
> Origin IGP, localpref 100, valid, external
> 5594 13193 109 13944, (received & used)
> 3FFE:8100:102::1:9 from 3FFE:8100:102::1:9 (195.154.1.6)
> Origin IGP, localpref 100, valid, external
> 1849 24765 13944, (received & used)
> 2001:600:4:1F1::1 from 2001:600:4:1F1::1 (158.43.131.66)
> Origin IGP, localpref 100, valid, external
> 15589 24765 13944, (received & used)
> 3FFE:8170:1:10::1 from 3FFE:8170:1:10::1 (192.168.1.12)
> Origin IGP, localpref 100, valid, external, best
>
>
> I don't know who is flapping in the breeze in this path "45328 2042
> 24765" but, I'll tell ya folks right now, if you have peers like that,
> it's in your best interest to de-peer.
>
> If this is prominant on the 6bone, I now understand what the fuss is
> about. I won't keep a peer like that, period, the end. We have one
> flapper right now. I don't know what their problem is as they haven't
> replied to my emails. It's "customer-routes:customer-routes" peering
> though so, the damage is at least limited to our peering session. If they
> don't reply with a satisfactory answer as in "We found a problem and are
> (contacting the vendor | replacing the hardware | firing the fool who kept
> unplugging the router | upgrading the software)" I'll have no choice but
> to admin-shutdown the session until they get their end fixed.
>
> So, in summary: If your peers flap in the breeze like the above example,
> find out why and fix it or drop the peering. It's not worth it.
>
>
>
> ---
> John Fraizer | High-Security Datacenter Services |
> EnterZone, Inc | Dedicated circuits 64k - 155M OC3 |
> http://www.enterzone.net/ | Virtual, Dedicated, Colocation |
>
>
>
> _______________________________________________
> 6bone mailing list
> 6bone@mailman.isi.edu
> http://mailman.isi.edu/mailman/listinfo/6bone
>
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