Subject: Re: ppp + mgetty = 1 min ping delay
To: Gan Uesli Starling <oinkfreebiker@att.net>
From: Dave Huang <khym@azeotrope.org>
List: netbsd-help
Date: 09/30/2001 18:30:59
On Sun, 30 Sep 2001, Gan Uesli Starling wrote:
> This way I indeed got a connection. And indeed, it did seem to
> reveal another problem. There is a horrendous delay in this
> connection: on the order of a minute and a half.
> Sep 30 15:20:45 thinkpad chat[2369]: abort on (NO DAILTONE)
That should still be DIALTONE, btw :)
> thinkpad# ping -c 3 192.168.1.100
> PING 192.168.1.100 (192.168.1.100): 56 data bytes
> 64 bytes from 192.168.1.100: icmp_seq=0 ttl=255 time=142.956 ms
> 64 bytes from 192.168.1.100: icmp_seq=1 ttl=255 time=106.142 ms
> 64 bytes from 192.168.1.100: icmp_seq=2 ttl=255 time=104.582 ms
That's not an unusual delay... 100ms is actually quite good for a modem
connection.
> ...But 1 minute and some 30 seconds passed between my entring
> the PING command and the appearance of the line which said...
> "PING 192.168.1.100 (192.168.1.100): 56 data bytes" which is not
> right at all.
That's not the delay on the connection, that's the DNS resolution timing
out. By default, ping will try to map the IP address to a name... unless
you have a nameserver set up to handle the IP-to-name mappings for the
192.168.1.* block, the request will go out to never never land. Ping
eventually gives up and starts the pinging. If you do "ping -n
192.168.1.100", you won't see the delay.
> I suspect that this is why, when I tried to login via PAP I got a
> nastygram on the ThinkPad that said "Peer refused to authenticate".
> I suspect that authentication timed out.
That's unrelated... that means the tower's PPP config is set to not do
authentication. Make sure you don't have "noauth" in its pppd options
file, and you do have an entry for the Thinkpad in its pap-secrets file.