Hi.
This is rather lengthy so please bear with me because I really need some
help here.
I am trying to get two linux boxes to talk PPP over a modem.
I can dial up the server and connect. I get the two IP addresses back,
then after about 3 minutes of not being able to ping the server or telnet
or anything else, the client terminates the connection with the following
message:
Excessive lack of response to LCP echo frames
If I look at the /var/log/messages file at the server, I see the same
message.
Ifconfig shows ppp0 up and running with all the right addresses.
Here are a few excerpts of some of the pertinent files:
Server ~/.ppprc
-detatch
modem
crtscts
debug
mtu 296
mru 296
lock
proxyarp
192.168.1.1:192.168.1.10
Client pppd command line parameters:
/dev/cua1 38400 modem lock crtscts debug defautroute 192.168.1.10:
Client /var/log/messages:
pppd 2.2.0 started by root, uid 0
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS1
local IP address 192.168.1.10
remote IP address 192.168.1.1
Excessive lack of response to LCP echo frames
Connection terminated.
Hangup (SIGHUP)
Exit.
Server /var/log/messages:
pppd 2.2.0 started by root, uid 1003
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS1
local IP address 192.168.1.1
remote IP address 192.168.1.10
found interface eth0 for proxy arp
Excessive lack of response to LCP echo frames.
Connection terminated.
Exit.
This is /var/log/debug at the server:
Aug 10 22:02:18 altair pppd[6090]: sent [LCP EchoRep id=0x0 92 4e 6a f2]
Aug 10 22:03:01 altair pppd[6090]: sent [LCP EchoReq id=0x1 92 4e 6a f2]
Aug 10 22:03:31 altair pppd[6090]: sent [LCP EchoReq id=0x2 92 4e 6a f2]
Aug 10 22:04:01 altair pppd[6090]: sent [LCP EchoReq id=0x3 92 4e 6a f2]
Aug 10 22:04:31 altair pppd[6090]: sent [LCP EchoReq id=0x4 92 4e 6a f2]
Aug 10 22:05:01 altair pppd[6090]: sent [LCP TermReq id=0x2]
Aug 10 22:05:04 altair pppd[6090]: sent [LCP TermReq id=0x3]
Aug 10 22:19:38 altair pppd[6126]: sent [LCP ConfReq id=0x1 <mru 296>
<asyncmap 0x0> <magic 0xd87bb742> <pcomp> <accomp>]
Aug 10 22:19:39 altair pppd[6126]: rcvd [LCP ConfReq id=0x1 <mru 1500>
<asyncmap 0x0> <magic 0x998d9d0f> <pcomp> <accomp>]
Aug 10 22:19:39 altair pppd[6126]: sent [LCP ConfAck id=0x1 <mru 1500>
<asyncmap 0x0> <magic 0x998d9d0f> <pcomp> <accomp>]
Aug 10 22:19:41 altair pppd[6126]: sent [LCP ConfReq id=0x1 <mru 296>
<asyncmap 0x0> <magic 0xd87bb742> <pcomp> <accomp>]
Aug 10 22:19:41 altair pppd[6126]: rcvd [LCP ConfAck id=0x1 <mru 296>
<asyncmap 0x0> <magic 0xd87bb742> <pcomp> <accomp>]
Aug 10 22:19:41 altair pppd[6126]: sent [IPCP ConfReq id=0x1 <addr
192.168.1.1> <compress VJ 0f 01>]
Aug 10 22:19:41 altair pppd[6126]: rcvd [IPCP ConfAck id=0x1 <addr
192.168.1.1> <compress VJ 0f 01>]
Aug 10 22:19:44 altair pppd[6126]: rcvd [IPCP ConfReq id=0x1 <addr
192.168.1.10> <compress VJ 0f 01>]
Aug 10 22:19:44 altair pppd[6126]: sent [IPCP ConfAck id=0x1 <addr
192.168.1.10> <compress VJ 0f 01>]
Aug 10 22:20:24 altair pppd[6126]: sent [LCP EchoReq id=0x0 d8 7b b7 42]
Aug 10 22:20:54 altair pppd[6126]: sent [LCP EchoReq id=0x1 d8 7b b7 42]
Aug 10 22:21:24 altair pppd[6126]: sent [LCP EchoReq id=0x2 d8 7b b7 42]
Aug 10 22:21:54 altair pppd[6126]: sent [LCP EchoReq id=0x3 d8 7b b7 42]
Aug 10 22:22:24 altair pppd[6126]: sent [LCP TermReq id=0x2]
Aug 10 22:22:27 altair pppd[6126]: sent [LCP TermReq id=0x3]
While the link is up, my client routing table looks like this:
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.1 0.0.0.0 255.255.255.255 UH 0 0 1 ppp0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 2 lo
0.0.0.0 0.0.0.0 0.0.0.0 UG 0 0 1 ppp0
The routing table at the server looks like this:
Destination Gateway Genmask Flags Metric Ref Use Iface
199.181.164.101 0.0.0.0 255.255.255.255 UH 1 0 0 sl0
192.168.1.10 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 307 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 100 lo
0.0.0.0 0.0.0.0 0.0.0.0 U 1 0 181 sl0
The first entry is set up by diald to my ISP. I think we can ignore that
as it won't be in use while I am connected to my client machine (only one
modem).
I think the problem lies at the server, because I have no problems dialing
my ISP from the client using basically the same setup.
Then again, my Server has no problem linking up to my ISP through diald
and PPP either.
Thanks in advance for any help.
Tim Hillman
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