[Asterisk-Users] IAX2 Sporadic TX/RX retries

[Tim Connolly]

Sorry... In the land of 150 new Cisco's each month, I assume everyone has a
2950T-24 on their desk... Bad assumption!

-----Original Message-----
From: Steve Rodgers [mailto:hwstar at rodgers.sdcoxmail.com] 
Sent: Wednesday, October 06, 2004 11:06 PM
To: Tim Connolly
Subject: Re: [Asterisk-Users] IAX2 Sporadic TX/RX retries

On Wednesday 06 October 2004 20:50, you wrote:
> First off.. They aren't hardwired together.

Yes. You are correct. I should have said wired through a switch.
>
> Check your switch for errors on either port. What type of switch is this
> anyway? 

This is a dumb switch/router (Linksys BEFSR41). BTW I tried disconnecting
all 
other devices from the switch/router including the wan port and it did not 
reduce the retry rate. 

I probably need to try and eliminate the switch altogether and connect the 2

systems with a crossover cable.

>I usually spantree portfast all my non-trunked ports. Also, you
> might look at static port neg's, like 100/Full.

I don't know what these command are . Managed switch commands maybe?



>
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Steve
Rodgers
> Sent: Wednesday, October 06, 2004 10:33 PM
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] IAX2 Sporadic TX/RX retries
>
>
> Hi,
>
> I'm trying to track down why I'm getting calls dropped on an infrequent
> basis
> between two asterisk servers which are at the same physical location and
> connected to each other with UTP ethernet. Here is the connection diagram
>
> Asterisk Server 1 ===UTPENET== Switch  ====UTPENET==== Asterisk Server 2
>
> I see sporadic RX and TX frame retries when I enable iax2 debugging on
> either
> box. Here's some sample output:
>
>    Timestamp: 30016ms  SCall: 00005  DCall: 00001 [192.168.17.200:4569]
> Rx-Frame Retry[ No] -- OSeqno: 012 ISeqno: 010 Type: IAX     Subclass:
> LAGRP Timestamp: 30016ms  SCall: 00001  DCall: 00005 [192.168.17.200:4569]
> Tx-Frame Retry[-01] -- OSeqno: 010 ISeqno: 013 Type: IAX     Subclass: ACK
> Timestamp: 30016ms  SCall: 00005  DCall: 00001 [192.168.17.200:4569]
> Rx-Frame Retry[ No] -- OSeqno: 013 ISeqno: 010 Type: IAX     Subclass:
> LAGRQ Timestamp: 30010ms  SCall: 00001  DCall: 00005 [192.168.17.200:4569]
> Tx-Frame Retry[000] -- OSeqno: 010 ISeqno: 014 Type: IAX     Subclass:
> LAGRP Timestamp: 30010ms  SCall: 00005  DCall: 00001 [192.168.17.200:4569]
> Rx-Frame Retry[ No] -- OSeqno: 014 ISeqno: 011 Type: IAX     Subclass: ACK
> Timestamp: 30010ms  SCall: 00001  DCall: 00005 [192.168.17.200:4569]
>
> I get a burst of these retries every 2-30 seconds on both ends.
>
> Given the two servers are hardwired to each other, I would think retries
> should be more infrequent and that this could be the "smoking gun" for the
> dropped calls.
>
>
> Besides the iax2 debug CLI command, what other tricks can be used to help
> to
>
> track this problem down to its root cause?
>
> Steve.
>
>
>
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