nanog mailing list archives
Re: [Nanog] Cogent Router dropping packets
From: manolo <mhernand1 () comcast net>
Date: Tue, 22 Apr 2008 08:43:07 -0400
Well it had sounded like I was in the minority and should keep my mouth shut. But here goes. On several occasions the peer that would advertise our routes would drop and with that the peer with the full bgp tables would drop as well. This happened for months on end. They tried blaming our 6500, our fiber provider, our IOS version, no conclusive findings where ever found that it was our problem. After some testing at the local Cogent office by both Cogent and myself, Cogent decided that they could "make a product" that would allow us too one have only one peer and two to connect directly to the GSR and not through a small catalyst. Low and behold things worked well for some time after that. This all happened while we had 3 other providers on the same router with no issues at all. We moved gbics, ports etc around to make sure it was not some odd ASIC or throughput issue with the 6500. Hope this answers the question. Manolo Paul Wall wrote:
On Mon, Apr 21, 2008 at 4:02 PM, manolo <mhernand1 () comcast net> wrote:I do have to say that the PSI net side of cogent is very good. We use them in Europe without many issues. I stay far away from the legacy cogent network in US.You still haven't explained the failure modes you've experienced as a result of cogent's A/B peer configuration, only fronted. Inquiring minds would like to know!
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Current thread:
- Re: [Nanog] Cogent Router dropping packets Mike Fedyk (Apr 18)
- Re: [Nanog] Cogent Router dropping packets Martin Hannigan (Apr 19)
- Re: [Nanog] Cogent Router dropping packets manolo (Apr 19)
- Re: [Nanog] Cogent Router dropping packets Paul Wall (Apr 20)
- Re: [Nanog] Cogent Router dropping packets Joe Greco (Apr 21)
- Re: [Nanog] Cogent Router dropping packets David Coulson (Apr 21)
- Re: [Nanog] Cogent Router dropping packets Joe Greco (Apr 21)
- Re: [Nanog] Cogent Router dropping packets manolo (Apr 21)
- Re: [Nanog] Cogent Router dropping packets John van Oppen (list account) (Apr 21)
- Re: [Nanog] Cogent Router dropping packets Paul Wall (Apr 21)
- Re: [Nanog] Cogent Router dropping packets manolo (Apr 22)
- Re: [Nanog] Cogent Router dropping packets David Coulson (Apr 22)
- Re: [Nanog] Cogent Router dropping packets Joe Greco (Apr 22)
- Re: [Nanog] Cogent Router dropping packets manolo (Apr 22)
- Re: [Nanog] Cogent Router dropping packets manolo (Apr 19)
- Re: [Nanog] Cogent Router dropping packets Martin Hannigan (Apr 19)
- <Possible follow-ups>
- Re: [Nanog] Cogent Router dropping packets John van Oppen (list account) (Apr 22)
- Re: [Nanog] Cogent Router dropping packets Pete Templin (Apr 22)