Re: bgp convergence problem

2014-05-08 Thread Christopher Morrow
On Thu, May 8, 2014 at 1:51 AM, Mark Tinka mark.ti...@seacom.mu wrote: On Wednesday, May 07, 2014 07:28:46 PM Peter Rubenstein wrote: Operationally speaking, AS1 should not be leaking routes from one upstream to the other. Bad route policy. ideally it'd be nice to be valley-free... so to

Re: bgp convergence problem

2014-05-08 Thread Mark Tinka
On Thursday, May 08, 2014 04:41:21 PM Christopher Morrow wrote: if only there were some technology that could be used to thwart such things. It's gotten to a point where a repeat offender has me wound up enough to prepend his AS into some of my paths. I wish there was a simpler way to turn

Re: bgp convergence problem

2014-05-08 Thread Christopher Morrow
On Thu, May 8, 2014 at 10:51 AM, Mark Tinka mark.ti...@seacom.mu wrote: On Thursday, May 08, 2014 04:41:21 PM Christopher Morrow wrote: if only there were some technology that could be used to thwart such things. It's gotten to a point where a repeat offender has me wound up enough to

Re: bgp convergence problem

2014-05-08 Thread Mark Tinka
On Thursday, May 08, 2014 06:34:14 PM Christopher Morrow wrote: :( that's bad news... config hackery is brittle. (but fun) Don't I know :-)... *sigh* Mark. signature.asc Description: This is a digitally signed message part.

RE: bgp convergence problem

2014-05-07 Thread Peter Rubenstein
...@nanog.org] On Behalf Of Song Li Sent: Monday, May 5, 2014 11:59 PM To: NANOG Subject: bgp convergence problem Hi everyone, I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5 | +--+16.1/16

Re: bgp convergence problem

2014-05-07 Thread Mark Tinka
On Wednesday, May 07, 2014 07:28:46 PM Peter Rubenstein wrote: Operationally speaking, AS1 should not be leaking routes from one upstream to the other. Bad route policy. Also, AS3 should not accept routes from AS1 that don't belong to it. Customer router filtering would prevent this.

Re: bgp convergence problem

2014-05-06 Thread ISP Services
the prefix. Crisis avoided. My textbook knowledge is a bit rusty though.. Dennis Hagens Song Li schreef op 5/6/14 5:58 AM: Hi everyone, I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5

Re: bgp convergence problem

2014-05-06 Thread Song Li
, I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5 | +--+16.1/16 | | +-+--+ || +---+--+ | | AS4

Re: bgp convergence problem

2014-05-06 Thread ISP Services
in the path and (should) drop the prefix. Crisis avoided. My textbook knowledge is a bit rusty though.. Dennis Hagens Song Li schreef op 5/6/14 5:58 AM: Hi everyone, I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5

Re: bgp convergence problem

2014-05-06 Thread Valdis . Kletnieks
On Tue, 06 May 2014 11:58:58 +0800, Song Li said: I have one bgp convergence problem which confused me. The problem is as follows: You may want to Google for 'BGP Wedgie'. https://www.nanog.org/meetings/nanog31/presentations/griffin.pdf http://www.rfc-base.org/txt/rfc-4264.txt Once you

Re: bgp convergence problem

2014-05-06 Thread Randy Bush
I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5 | +--+16.1/16 | | +-+--+ || +---+--+ | | AS4

bgp convergence problem

2014-05-05 Thread Song Li
Hi everyone, I have one bgp convergence problem which confused me. The problem is as follows: ++ | AS5 | +--+16.1/16 | | +-+--+ || +---+--+ | | AS4

BGP convergence problem

2010-06-08 Thread Andy B.
Hi, This morning there was an ethernet loop problem on DECIX, causing many BGP sessions to flap throughout the entire platform. While this can happen, I am myself facing with BGP convergence problems on our DECIX router (SUP720-3BXL with IOS SXI3). De DECIX loop has been solved two hours ago,

Re: BGP convergence problem

2010-06-08 Thread Ingo Flaschberger
Dear Andy This morning there was an ethernet loop problem on DECIX, causing many BGP sessions to flap throughout the entire platform. While this can happen, I am myself facing with BGP convergence problems on our DECIX router (SUP720-3BXL with IOS SXI3). De DECIX loop has been solved two hours

Re: BGP convergence problem

2010-06-08 Thread Andy B.
I finally decided to shut down all peerings and brought them back one by one. Everything is stable again, but I don't like the way I had to deal with it since it will most likely happen again when DECIX or an other IX we're at is having issues. I've seen a few BGP convergence discussions on

Re: BGP convergence problem

2010-06-08 Thread Jared Mauch
On Jun 8, 2010, at 10:27 AM, Andy B. wrote: I finally decided to shut down all peerings and brought them back one by one. Everything is stable again, but I don't like the way I had to deal with it since it will most likely happen again when DECIX or an other IX we're at is having issues.

Re: BGP convergence problem

2010-06-08 Thread Matthew Petach
On Tue, Jun 8, 2010 at 7:27 AM, Andy B. globic...@gmail.com wrote: I finally decided to shut down all peerings and brought them back one by one. Everything is stable again, but I don't like the way I had to deal with it since it will most likely happen again when DECIX or an other IX we're at

Re: BGP convergence problem

2010-06-08 Thread Richard A Steenbergen
On Tue, Jun 08, 2010 at 12:22:04PM -0400, Jared Mauch wrote: The Cisco 7600 and 6500 platforms are getting fairly old and have underpowered cpus these days. Starting in SXH the control plane did not scale quite as well as in SXF. This got better in SXI, but is not back on par with SXF

Re: BGP convergence problem

2010-06-08 Thread Randy Bush
The Cisco 7600 and 6500 platforms are getting fairly old and have underpowered cpus these days. the hamsters in them were never well fed, ever. though i have never run one, too yucchhy, i have measured receiving a research feed from one. over ten minutes for a full table while a router takes

Re: BGP convergence problem

2010-06-08 Thread Niels Bakker
* globic...@gmail.com (Andy B.) [Tue 08 Jun 2010, 16:28 CEST]: I finally decided to shut down all peerings and brought them back one by one. Sadly that's often the way it has to be done, modulo mild tweaks. Everything is stable again, but I don't like the way I had to deal with it since it