Skype issues behind Cisco 837

growse

growse

growse

Soldato
Joined
18 Oct 2002
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At my house in london, I've got a cisco 837 which works great. Currently, I'm living in New York and like to use skype to talk to people in the london house. Now, often when i talk to them, the voice data I receive from them goes a bit weird before the call drops. Sometimes this happens straight away, sometimes never. Usually it happens within 5 minutes. On the skype diagnostic information I get here, it says that the UDP quality is 'Bad' at the remote end.

I have no isses when using skypeout here in NY to talk to other landlines, so I'm thinking it's not a problem here.

My theory is that the firewall on the 837 firewall is basically dropping some of the udp packets for whatever reason before dropping the connection alltogether. Initially, i had a whole bunch of ip inspect rules set up, but I removed these and replaced them with:

Code: 
ip inspect tcp
ip inspect udp
ip inspect icmp

These lines are necessary for the internet and ping to work from within the london house. However i still get the same problem. Any ideas?
 
Have a look at the 837's logs?
It should be giving a message if it's dropping packets, either from an ACL, or from ip inspect.
 
The wonderful thing is that my ssh server has gone down, and I can't get into that to look at the cisco. All i can say is that I'm logging normal firewall packet drops, but not ip inspect drops and therefore didn't see anything before my server dropped.

Is it likely to be the inspect, or are there any other candidates for this behaviour?
 
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