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Old 10-02-2007, 03:51 PM
unix unix is offline
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Join Date: Sep 2009
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Default Re: PPPD via GPRS disconnection problem

In article ,
Bill Unruh wrote:
>Mikko Rapeli writes:
>
>>In article <61b44f09.0504080525.63a047b9@posting.google.com>, Krister
>>Renaud wrote:
>>> The problem:
>>>
>>> I start pppd, the connection comes up, if-up is run. After that I get
>>> "No response to 3 echo-requests" and the link is disconnected. I have
>>> tried using Fedora and an XScale linux with the same result.

>
>>Disconnection is the problem?

>
>>The error message is a good hint. The other end of the PPP link, most
>>likely the phone you're using, does not support lcp-echo-requests and
>>-replies (for really no good reason as the serial links aren't that
>>reliable).

>
>>> lcp-echo-interval 5
>>> lcp-echo-failure 3

>
>>Setting these to zero will effectively disable echo requests and
>>replies. man pppd will tell more.

>
>Agreed. There are two possibilities-- the other end is disconnected or the
>othe end does not respond to echo requests.


It's clear from the original posting that the other end doesn't do echo
requests:

>> sent [LCP EchoReq id=0x2 magic=0x0]
>> rcvd [LCP CodeRej id=0x5 09 02 00 08 00 00 00 00]
>> LCP: Rcvd Code-Reject for code 9, id 2


At least it did a CodeRej[ect] instead of just ignoring you. ;^)

>Disable echo requests, and see
>if things work. If they do, the explanation is the second one. If they do
>not, then the first is the more likely. From the log output it looks like
>things should work.


========= For LAN/WAN Protocol Analysis, check out PacketView Pro! =========
Patrick Klos Email: patrick@klos.com
Klos Technologies, Inc. Web: http://www.klos.com/
==== I don't think infinity is as big as it seems - P.Klos, 20-Mar-2005 ====

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