Opened 5 years ago

Last modified 20 months ago

#12839 new defect

Setting LCP echo failure threshold to zero doesn't ignore failures

Reported by: anonymous Owned by: developers
Priority: normal Milestone: Barrier Breaker 14.07
Component: base system Version: 10.03.1
Keywords: pppd lcp echo Cc:


I'm running OpenWrt Backfire 10.03.1 / LuCI 0.10.0 Release (0.10.0) on a TP-LINK TL-WR1043ND.

In Network -> Interfaces -> WAN -> Advanced I've got "LCP echo failure threshold" set to 0. The text under the box says "Presume peer to be dead after given amount of LCP echo failures, use 0 to ignore failures." But it's not ignoring failures, it's disconnecting after 5 lost replies, with something like this in the system log (sorry, the exact text has scrolled away):

No response to 5 echo-requests
Serial link appears to be disconnected.
Connection terminated.

Setting the threshold to a large number (500) works.

Attachments (0)

Change History (6)

comment:1 Changed 5 years ago by anonymous

See if this help you:

comment:2 Changed 5 years ago by anonymous

Looks like a LuCI bug that ignores values on /etc/ppp/options

lcp-echo-failure 5 
lcp-echo-interval 1

comment:3 Changed 5 years ago by anonymous

Please someone fix this bug, thanks!

comment:4 Changed 5 years ago by MapHtH

This is connected to my ticket...

I think it's the same reason why uploads break the connection.


So it would be a good idea to trace this bug.

comment:5 Changed 4 years ago by jow

  • Milestone changed from Attitude Adjustment 12.09 to Barrier Breaker 14.07

Milestone Attitude Adjustment 12.09 deleted

comment:6 Changed 20 months ago by anonymous

Still an issue. Setting the value to 0 to ignore, lcp echo failure defaults to 5 failures.

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