[asterisk-users] sip show channelstats reliable?

[Eric Wieling]

I've seen something similar with Adtran SIP gateways.    When a re-invite happens the Adtran gets all confused about call stats and marks the pre-reinvite leg of the call as losing large numbers of packets.    BTW, IIRC reinvites happen when a codec changes or the channel switches to T.38.

Also Adtran SIP gateways appear not to support OPTIONS packets when running in SIP proxy mode, which is very annoying.     At some point I'll try and arrange a slugfest between Digium and Adtran and they can figure out why it doesn't work.

From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Todd R.
Sent: Monday, January 19, 2015 1:45 PM
To: Asterisk-Users List
Subject: Re: [asterisk-users] sip show channelstats reliable?

Additional info:

At the moment I am running 1.8.x but the other day I was getting the same results on 11.x

Here is a sample from show channelstats. I do think this command is showing that there is trouble between specific IP's and my Asterisk box but I don't know if the numbers are accurate and reliable.

Peer

Call ID

Duration

Recv: Pack

Lost

(     %)

Jitter

Send: Pack

Lost

(

%)

Jitter

x.x.x.x

5531341d06b

00:07:42

0000023123

0000063836

(73.41%)

0.0000

0000023102

0000000000

(

0.00%)

0.0007


Peer IP changed to protect the innocent :-)

________________________________
From: tjrlist at live.com<mailto:tjrlist at live.com>
To: asterisk-users at lists.digium.com<mailto:asterisk-users at lists.digium.com>
Date: Mon, 19 Jan 2015 12:17:25 -0600
Subject: [asterisk-users] sip show channelstats reliable?
I am seeing lots of lost packets when running the command sip show channelstats at the CLI.

There are issues across multiple Asterisk servers I am trying to diagnose but everything I read seems to point to this command being pretty unreliable.

Can I trust the info this command shows?

I am showing lots of lost packets in sip show channelstats but I can't see any packet loss when pinging the same IP's to/from.

Since I don't 100% control the network my gear is on, I need something outside of Asterisk to show the network engineer to convince here and myself that there are network issues.

All I have is the loss that's shown from this command with no real network stats to back it up.

Is there a magic command in CentOS anyone can recommend to diagnose and match up the issues shown in Asterisk using this command?

Moving gear around on the network changes the info Asterisk shows a LOT. For example, if I point traffic to the main physical gateway I get loss to a particular customer's IP (their PBX), if I move it to another place on the network (as a VM) their IP is good and other customers IP's start showing loss using the channelstats info.

Driving me freakin' crazy. It does appear there are network issues causing my troubles but I can't get help if I can't point to some hard and fast issues outside of Asterisk.

The only thing I have right now is collissions showing on one of a few of our pfSense devices but they are virtual running on XenServer, still this would indicate a problem in my opinion.

Thanks in advance for any assistance on this issue. Stepping back from the ledge now LOL



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