Bug 78958 - lcp-echo* options blocks pppd from connecting
lcp-echo* options blocks pppd from connecting
Product: Red Hat Linux
Classification: Retired
Component: ppp (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Thomas Woerner
Jay Turner
Depends On:
Blocks: 78984
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Reported: 2002-12-03 17:46 EST by MIchael Kolmodin
Modified: 2015-01-07 19:02 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-08-13 05:10:53 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description MIchael Kolmodin 2002-12-03 17:46:06 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2b) Gecko/20021016

Description of problem:
I have configured pppd to call my ISP through a USB-connected serial device. The
connection script works OK. However, if I add the lcp-echo* options in order to
supervise my connection which does not handle DCD/DTR, the connection fails. The
logfile shows that my system only sends lcp-echo-request, nothing else (it
should configure the link)

Version-Release number of selected component (if applicable):ppp-2.4.1-2

How reproducible:

Steps to Reproduce:
1.Create a ppp configuration which calls to my ISP
2.Verify that it works
3.Add lcp-echo-interval and lcp-echo-failure options to pppd (I used a
  configuration under /etc/ppp/peers, but I presume using PPPOPTIONS
  in ifcfg-ppp0 will give the same result)
4 Try to connect, watch failere
5 If not done, add 'debug' option, configure syslog to handle
  messages if not done.
6  Watch /var/log/messages, nothing but lcp-echo-request.

Actual Results:  As above: no connection, just lcp-echo-requests in

Expected Results:  Connection OK, normal connection dialog logged by syslog with
interspersed lcp-echo-requests. Also: PPP link disconnected if physical link
broken despite lack of correct hardware signals (DCD/DSR/DTR) handling.

Additional info:

A typical notebook setup: No fixed serial port, but a USB one on the machine.
Connection through a cellular phone to ISP
Comment 1 MIchael Kolmodin 2002-12-03 18:50:34 EST
pppd version 2.4.1
Comment 2 MIchael Kolmodin 2002-12-04 11:41:20 EST
Oops, don't know why, but now it works for me. Close the bug, I will reopen it
if it occur again (and I understand why...)

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