[2801] in linux-net channel archive
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daemon@ATHENA.MIT.EDU (rajiv@gmrt.ernet.in)
Sun May 5 15:53:30 1996
Date: Sat, 4 May 1996 11:40:06 +0530
From: rajiv@gmrt.ernet.in
To: linux-net@vger.rutgers.edu
Hello!
We have istalled Slackware Linux version 3.x.x with kernel version 1.2.
and 1.3.20. We wish to run slip over part of our network which is connected
by a direct serial line for testing that will get converted into leased line
connection. We have gone through all the known FAQs and HOWTOs.
Problem is the following:
Serial connection is 1-1 2-3 3-2 4-5 5-4 6-6 7-7 8-8 20-20. On the slip
server linux machine we configured sliplogin which appears to be working
because when we use cu -l cua1 -s 9600 from other machine the server gets
configured appropriately which could be seen using ifconfig -a and route -n
commands. Now if ping is executed on server with sliplogin, one could observe
the packets appearing on the client's screen that were printed by cu on the
client. Now we come out of the cu and rissue the following commands on client
slattach -v -d -p slip -s 9600 /dev/cua1 &
#ifconfig sl0 client netmask 255.255.255.0 broadcast 158.144.12.255 pointopoint
server up
ifconfig sl0 client pointopoint server up
route add -host server metric 0 dev sl0
route add default gw server metric 0 dev sl0
(Variation tried on ifconfig mentioned as comment)
At this point on client and server network seem to be configured completely
verified with ifconfig and route commands. Now the moment one issues the
"ping server" command on client one finds that client's configuration is lost
and slattach still running but the device sl0 vanishes.
On server, one notices that one packet is received and one packet has been
transmitted. Therefore, the moment client receives a packet the network
configuration vanishes on the client. But the server (sliplogin) configuration
remains intact.
Another surprise that I have is that on client why does one have to run
cu -l cua1 at all to login to the server. Shouldn't that be done by
slattach itself. The example in NET-2-HOWTO does not mention about
logging into the server using cu or anything.
Possibly, the information above is not sufficient. We will be glad to send
more information if someone wants them.
Rajiv
rajiv@gmrt.ernet.in
