LCP terminated by peer

Discussions for BiPAC 8900 series: 8900AX-1600, 8900AX-2400, 8900X
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Griff27
Posts: 3
Joined: Tue Nov 13, 2018 9:04 pm

LCP terminated by peer

Post by Griff27 »

For weeks now I have been plagued by VDSL connection dropping.
I have had three visits by BT and they have, to be fair, done a fair job of trying to track the problem. Line tests from both ends of connection (home and cabinet) and even two "lift and shifts". After all this it has been established that the line is stable and not dropping synch.
I have been in contact with my ISP (Zen) and they have reported having seen my connection drop 500 times over three days!

I am using Bipac 8900AX R2-1600, latest firmware 2.50a.d23 and have done factory reset and the problem still exists. Extract of log as below:-
  • Nov 19 12:08:30 daemon crit syslog: PPP LCP UP.
    Nov 19 12:08:30 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:08:30 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:08:30 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:08:30 daemon crit syslog: PPP LCP UP.
    Nov 19 12:08:30 daemon notice syslog: pppd:Remote message: Authentication
    success,Welcome!
    Nov 19 12:08:30 daemon notice syslog: pppd:local IP address xx.xx.x.xx
    Nov 19 12:08:30 daemon notice syslog: pppd:remote IP address 51.148.72.22
    Nov 19 12:08:30 daemon notice syslog: pppd:primary DNS address 212.23.3.100
    Nov 19 12:08:30 daemon notice syslog: pppd:secondary DNS address 212.23.6.100
    Nov 19 12:08:30 daemon crit syslog: Received valid IP address from server.
    Connection UP.
    Nov 19 12:26:42 daemon notice syslog: pppd:LCP terminated by peer
    Nov 19 12:26:42 daemon crit syslog: Clear IP addresses. PPP connection DOWN.
    Nov 19 12:26:42 daemon crit syslog: Clear IP addresses. Connection DOWN.
    Nov 19 12:26:42 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:42 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:45 daemon notice syslog: pppd:Connection terminated.
    Nov 19 12:26:45 daemon notice syslog: pppd:Connect time 18.2 minutes.
    Nov 19 12:26:45 daemon notice syslog: pppd:Sent 1204150 bytes, received 3729805
    bytes.
    Nov 19 12:26:45 daemon notice syslog: pppd:Doing disconnect
    Nov 19 12:26:48 daemon notice syslog: PPP: Start to connect ...
    Nov 19 12:26:48 daemon crit syslog: session disconnect
    pppoe.oldsession=84262ba23136/11b7
    Nov 19 12:26:52 daemon crit syslog: PPP server detected.
    Nov 19 12:26:52 daemon crit syslog: PPP session established.
    Nov 19 12:26:52 kern warn kernel: netdev path : ppp1.1
    Nov 19 12:26:52 kern info kernel: -> ptm0.1
    Nov 19 12:26:52 kern info kernel: -> ptm0
    Nov 19 12:26:52 daemon notice syslog: pppd:Using interface ppp1.1
    Nov 19 12:26:52 daemon notice syslog: pppd:Connect: ppp1.1 <--> ptm0.1
    Nov 19 12:26:52 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon crit syslog: PPP LCP UP.
    Nov 19 12:26:52 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon crit syslog: PPP LCP UP.
    Nov 19 12:26:52 daemon notice syslog: pppd:Remote message: Authentication
    success,Welcome!
    Nov 19 12:26:52 daemon notice syslog: pppd:local IP address xx.xx.x.xx
    Nov 19 12:26:52 daemon notice syslog: pppd:remote IP address 51.148.72.24
    Nov 19 12:26:52 daemon notice syslog: pppd:primary DNS address 212.23.3.100
    Nov 19 12:26:52 daemon notice syslog: pppd:secondary DNS address 212.23.6.100
    Nov 19 12:26:52 daemon crit syslog: Received valid IP address from server.
    Connection UP.
I have also tried a spare Draytec 2760n with similar results/drop outs.

I would be grateful for any suggestions.
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billion_fan
Posts: 5398
Joined: Tue Jul 19, 2011 4:30 pm

Re: LCP terminated by peer

Post by billion_fan »

Griff27 wrote: ↑Mon Nov 19, 2018 1:08 pm For weeks now I have been plagued by VDSL connection dropping.
I have had three visits by BT and they have, to be fair, done a fair job of trying to track the problem. Line tests from both ends of connection (home and cabinet) and even two "lift and shifts". After all this it has been established that the line is stable and not dropping synch.
I have been in contact with my ISP (Zen) and they have reported having seen my connection drop 500 times over three days!

I am using Bipac 8900AX R2-1600, latest firmware 2.50a.d23 and have done factory reset and the problem still exists. Extract of log as below:-
  • Nov 19 12:08:30 daemon crit syslog: PPP LCP UP.
    Nov 19 12:08:30 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:08:30 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:08:30 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:08:30 daemon crit syslog: PPP LCP UP.
    Nov 19 12:08:30 daemon notice syslog: pppd:Remote message: Authentication
    success,Welcome!
    Nov 19 12:08:30 daemon notice syslog: pppd:local IP address xx.xx.x.xx
    Nov 19 12:08:30 daemon notice syslog: pppd:remote IP address 51.148.72.22
    Nov 19 12:08:30 daemon notice syslog: pppd:primary DNS address 212.23.3.100
    Nov 19 12:08:30 daemon notice syslog: pppd:secondary DNS address 212.23.6.100
    Nov 19 12:08:30 daemon crit syslog: Received valid IP address from server.
    Connection UP.
    Nov 19 12:26:42 daemon notice syslog: pppd:LCP terminated by peer
    Nov 19 12:26:42 daemon crit syslog: Clear IP addresses. PPP connection DOWN.
    Nov 19 12:26:42 daemon crit syslog: Clear IP addresses. Connection DOWN.
    Nov 19 12:26:42 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:42 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:45 daemon notice syslog: pppd:Connection terminated.
    Nov 19 12:26:45 daemon notice syslog: pppd:Connect time 18.2 minutes.
    Nov 19 12:26:45 daemon notice syslog: pppd:Sent 1204150 bytes, received 3729805
    bytes.
    Nov 19 12:26:45 daemon notice syslog: pppd:Doing disconnect
    Nov 19 12:26:48 daemon notice syslog: PPP: Start to connect ...
    Nov 19 12:26:48 daemon crit syslog: session disconnect
    pppoe.oldsession=84262ba23136/11b7
    Nov 19 12:26:52 daemon crit syslog: PPP server detected.
    Nov 19 12:26:52 daemon crit syslog: PPP session established.
    Nov 19 12:26:52 kern warn kernel: netdev path : ppp1.1
    Nov 19 12:26:52 kern info kernel: -> ptm0.1
    Nov 19 12:26:52 kern info kernel: -> ptm0
    Nov 19 12:26:52 daemon notice syslog: pppd:Using interface ppp1.1
    Nov 19 12:26:52 daemon notice syslog: pppd:Connect: ppp1.1 <--> ptm0.1
    Nov 19 12:26:52 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon crit syslog: PPP LCP UP.
    Nov 19 12:26:52 daemon notice syslog: pppd:Couldn't increase MTU to 1500.
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon err syslog: pppd:Couldn't increase MRU to 1500
    Nov 19 12:26:52 daemon crit syslog: PPP LCP UP.
    Nov 19 12:26:52 daemon notice syslog: pppd:Remote message: Authentication
    success,Welcome!
    Nov 19 12:26:52 daemon notice syslog: pppd:local IP address xx.xx.x.xx
    Nov 19 12:26:52 daemon notice syslog: pppd:remote IP address 51.148.72.24
    Nov 19 12:26:52 daemon notice syslog: pppd:primary DNS address 212.23.3.100
    Nov 19 12:26:52 daemon notice syslog: pppd:secondary DNS address 212.23.6.100
    Nov 19 12:26:52 daemon crit syslog: Received valid IP address from server.
    Connection UP.
I have also tried a spare Draytec 2760n with similar results/drop outs.

I would be grateful for any suggestions.
Looks like the PPP session is dropping (not the DSL line losing sync), the ISP will have to investigate as both the Draytek and Billion and returning with the same results
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Griff27
Posts: 3
Joined: Tue Nov 13, 2018 9:04 pm

Re: LCP terminated by peer

Post by Griff27 »

I should have also mentioned that I am seeing a lot of time outs on pings the ISP's primary and secondary DNS addresses
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billion_fan
Posts: 5398
Joined: Tue Jul 19, 2011 4:30 pm

Re: LCP terminated by peer

Post by billion_fan »

Griff27 wrote: ↑Mon Nov 19, 2018 1:14 pm I should have also mentioned that I am seeing a lot of time outs on pings the ISP's primary and secondary DNS addresses
Looks like a packet loss, something you can also report to the ISP
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Griff27
Posts: 3
Joined: Tue Nov 13, 2018 9:04 pm

Re: LCP terminated by peer

Post by Griff27 »

Thanks for you replies Billion_Fan
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