North American Network Operators Group|
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Re: WWW/DNS problems
I also had one to ti.com bounce. D. At 04:31 PM 8/17/99 +0100, Ryan O`Connell wrote: > >Hi, > >Not strictly a North American problem but I was wondering if anyone had seen >this behaviour. > >We currently have two blocks of IP address space, 195.224.206/24 and >193.193.186/23. Everything works fine from 195.224.206 but from 193.193.186 >there are often problems accessing web servers - either they don't respond for >ages then are suddenly OK, send just the headers in response to a GET request >then stop or just plain don't respond to HTTP queries at all. This appears to >happen mostly with Netscape servers although I only have a few examples so far >so I'm not sure. (www.real.com, www.cisco.com, www.etrade.com, www.bt.com) > >We also have two lines out of the building, although I've tried routing in >various ways and the problem seems to follow the IP address rather than the >outbound line. (IP addresses are, for the moment, tied to the line until we >get BGP on the line currently serving 195.224.206/24 however I can't see how >this could be an inbound line problem.) > >I believe this to be a DNS problem as I can't see anything else that could be >causing a problem - it doesn't seem to matter what web browser is used (IE, >Netscape, Lynx or even telnet) or if a web cache (Squid) is used or not. >There are three reverse DNS servers in totally different locations (One on our >site, one on the UK Joint Academic Network and one in Switzerland) so I don't >think part of the net being unreacable from somewhere can be the problem. > >The only *POSSIBLE* explanation I can come up with is that the IPv6 AAAA >entries for 193.in-addr.arpa are confusing some nameservers and causing this >problem. I'm really grasping at straws though - does anyone have even the >slightest idea what cound be going on? (Even off-list wild-guess suggestions >would be appreciated.) > >Thanks. > >--- >Ryan O'Connell - http://complicity.olf.co.uk:8080/ - <[email protected]> > >How do you sleep? How do you last the night and keep the dogs at bay? >How do you feel when you close your eyes, and try and drift away? >Does it feel any better now? Does it mean anymore >When the angel of death comes knock, knocking, And banging at your door?