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I apologize if this is off-topic - I rarely
post, mostly just monitor. I am not posting this to [nsp] or [isp-bgp] for
I don't believe the following is a configuration problem on my side, but an
operational one of a certain provider. I am not going to sling dirt or put
actual names / ASN, etc for now. I want to list the problem and if it is
relevent I can post more specific data or be contacted offlist with suggestions
or from the provider.
The problem is completely intermittent. 99%
of the time everything works fine. I have
begged the customer to get their ASP's ISP involved since I believe that is
where the problem lies. They claim it is my problem since we connect to
them.....(Don't want to start a war here...I know)
I am Provider A and my customer cannot connect
to an ASP through Provider X. The problem lasts for what seems to be exactly 10,
15 or 30 minute intervals. I am announcing my /19 broken up into multiple
/22 and /21's. It is only 1 of the /22 that has the problem. One of
my links is not going down and I do back backup routes through multiple
providers. It took me almost a month to confirm the problem because they
would call be *after* it happened and everything would look fine. I put
some monitors on the destination site and it will never test bad since the
monitors were on other subnets. They finally called me while it was
occuring and I did confirm I could not reach the site from any of the IP's in
that certain /22 subnet.
So, my point and questions:
Has anyone ever heard of such a problem
? I tried to search some archives and google - but I can't really figure
out what to search on that won't result in 1000 + matches.
Is there any function or problem that might exist
for exactly 10, 15 or 30 minutes (i.e. BGP Flap, subnet block filter / ACL ?)
over and over ?
Should I contact provider X dircectly ? Will
they work directly with me ? I believe my customers ASP opened a ticket
with their ISP but with all the layers and short time frame of the issue I don't
think it will get resolved quickly or easily.
Responses online or offline welcome. If
anyone wants more specific info posted to the forum (IP subnet blocks, Provider
X, ASN, etc) please let me know.
Thanks
Eric
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