Subject: SLIP server erratically fails on dialup.
To: 'netbsd-help' <netbsd-help@NetBSD.ORG>
From: John A. Maier <root@news.datastorm.com>
List: netbsd-help
Date: 10/17/1995 16:03:09
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I have a i386 NetBSD box acting as a SLIP server. When I get a =
connection, it's nothing but fast and reliable. Here are some of the =
stats when no one is on the line.
>arp -a
datastorm.com (205.138.190.254) at 0:0:a2:a:1f:1e
datastorm.com (205.138.190.255) at (incomplete)
>netstat -i
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs =
Coll
ed2 1500 <Link>0.0.c0.6e.82.ba 24539 0 1168 0 =
7
ed2 1500 205.138.190 rndslip0 24539 0 1168 0 =
7
lo0 32768 <Link> 34 0 34 0 =
0
lo0 32768 127 LOCALHOST 34 0 34 0 =
0
sl0* 1006 <Link> 96 0 57 0 =
0
sl0* 1006 205.138.190 rndslip0 96 0 57 0 =
0
ppp0* 1500 <Link> 0 0 0 0 =
0
>ifconfig -a
ed2: =
flags=3D9863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,LINK0,MULTICAST>
inet 205.138.190.38 netmask 0xffffff00 broadcast 205.138.190.255
lo0: flags=3D8009<UP,LOOPBACK,MULTICAST>
inet 127.0.0.1 netmask 0xff000000
sl0: flags=3Dd030<POINTOPOINT,NOTRAILERS,LINK0,LINK2,MULTICAST>
inet 205.138.190.38 --> 205.138.190.39 netmask 0xffffff00
ppp0: flags=3D10<POINTOPOINT>
>route get rndslip1
route to: rndslip1
destination: datastorm.com
mask: 255.255.255.0
interface: ed2
flags: <UP,DONE,CLONING>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu =
expire
0 0 0 0 0 0 0 =
-4800
*************************************************************************=
******
When I get a reliable connection, I get this:
>arp -a
rndslip1.datastorm.com (205.138.190.39) at 0:0:c0:6e:82:ba permanent =
published
datastorm.com (205.138.190.254) at 0:0:a2:a:1f:1e
datastorm.com (205.138.190.255) at (incomplete)
>netstat -i
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs =
Coll
ed2 1500 <Link>0.0.c0.6e.82.ba 23875 0 1119 0 =
7
ed2 1500 205.138.190 rndslip0 23875 0 1119 0 =
7
lo0 32768 <Link> 34 0 34 0 =
0
lo0 32768 127 LOCALHOST 34 0 34 0 =
0
sl0 1006 <Link> 96 0 57 0 =
0
sl0 1006 205.138.190 rndslip0 96 0 57 0 =
0
ppp0* 1500 <Link> 0 0 0 0 =
0
>ifconfig -a
ed2: =
flags=3D9863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,LINK0,MULTICAST>
inet 205.138.190.38 netmask 0xffffff00 broadcast 205.138.190.255
lo0: flags=3D8009<UP,LOOPBACK,MULTICAST>
inet 127.0.0.1 netmask 0xff000000
sl0: flags=3Dd031<UP,POINTOPOINT,NOTRAILERS,LINK0,LINK2,MULTICAST>
inet 205.138.190.38 --> 205.138.190.39 netmask 0xffffff00
ppp0: flags=3D10<POINTOPOINT>
>route get rndslip1
route to: rndslip1
destination: rndslip1
interface: sl0
flags: <UP,HOST,DONE>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu =
expire
0 0 0 0 0 0 0 =
0
*************************************************************************=
******
About every 5-10 connection fails to set up the routing information =
correctly. A route get rndslip1 give me this on a =
failure:
>route get rndslip1
route to: rndslip1
destination: rndslip1
interface: ed2
flags: <UP,HOST,DONE,LLINFO>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu =
expire
0 0 0 0 0 0 0 =
-1
*************************************************************************=
******
If I then try to ping the client from the host, it fails with a no route =
to host error message. The route then looks like this:
>route get rndslip1
route to: rndslip1
destination: rndslip1
interface: ed2
flags: <UP,HOST,REJECT,DONE,LLINFO>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu =
expire
0 0 0 0 0 0 0 =
0
*************************************************************************=
******
I can disconnect and retry and might or might not get connected.
So, what do my slip.login and slip.logout files look like?
rndslip0.datastorm.com:/root>cat /etc/sliphome/slip.logout
#
# @(#)slip.logout 5.1 (jam) 03/15/95
#
# generic logout file for a slip line. sliplogin invokes this with
# the parameters:
# 1 2 3 4 5 6 7-n
# slipunit ttyspeed loginname local-addr remote-addr mask opt-args
#
/sbin/ifconfig $7$1 down
/sbin/route delete $5 $4
arp -d $5
exit
rndslip0.datastorm.com:/root>cat /etc/sliphome/slip.login
#!/bin/sh -
#
# @(#)slip.login 5.1 (jam) 03/15/95
#
# generic login file for a slip line. sliplogin invokes this with
# the parameters:
# 1 2 3 4 5 6 7-n
# slipunit ttyspeed loginname local-addr remote-addr mask opt-args
#
echo "slattach -h -s "$2" /dev/tty03" > /dev/console
slattach -h -s $2 /dev/tty03 /dev/console
echo "arp -s "$5" 00:00:c0:6e:82:ba pub" > /dev/console
arp -s "$5" 00:00:c0:6e:82:ba pub > /dev/console
echo "/sbin/ifconfig sl"$1" inet "$4" "$5" netmask "$6" -trailers" > =
/dev/consol
e
/sbin/ifconfig sl$1 inet $4 $5 netmask $6 -trailers > /dev/console
echo "/sbin/route add "$5" "$4 > /dev/console
/sbin/route add $5 $4 > /dev/console
exit
#End of Script
rndslip0.datastorm.com:/root>cat /etc/sliphome/slip.logout
#
# @(#)slip.logout 5.1 (jam) 03/15/95
#
# generic logout file for a slip line. sliplogin invokes this with
# the parameters:
# 1 2 3 4 5 6 7-n
# slipunit ttyspeed loginname local-addr remote-addr mask opt-args
#
/sbin/ifconfig $7$1 down
/sbin/route delete $5 $4
arp -d $5
exit
#End of Script
Any help????
jam
*************************************************************************=
**
* John A. Maier * Research and Development =
*
* E-mail: johnam@datastorm.com * Datastorm Technologies Inc. =
*
* * Procomm Plus for Windows and DOS =
*
* * (314) 443-3283 =
*
*************************************************************************=
**
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