[plug] ppp ping problem

[Andrew Howell]

On Wed, Jun 16, 1999 at 06:42:31PM +0800, Lindsay Allen wrote:
> 
> Greetings,
> 
> Has anyone else come across this problem?  The packets do indeed go out at
> 1 second intervals, as verified by the modem lights, but arrive back in
> bursts, typically 8-10 at a time.
> 
> This occurs at intervals of 2-4 weeks and usually resolves itself by the
> modem dropping out.  I have seen it with different modems, different
> kernels, different ppp versions and sometimes it has even involved a
> Portmaster at the other end. 
> 
> elm:# ping fred
> PING fred (192.168.2.1): 56 data bytes
> 64 bytes from 192.168.2.1: icmp_seq=0 ttl=255 time=6541.4 ms
> 64 bytes from 192.168.2.1: icmp_seq=1 ttl=255 time=5570.9 ms
> 64 bytes from 192.168.2.1: icmp_seq=2 ttl=255 time=4671.0 ms
> 64 bytes from 192.168.2.1: icmp_seq=3 ttl=255 time=3691.5 ms
> 64 bytes from 192.168.2.1: icmp_seq=4 ttl=255 time=2700.8 ms
> 64 bytes from 192.168.2.1: icmp_seq=5 ttl=255 time=1721.4 ms
> 64 bytes from 192.168.2.1: icmp_seq=6 ttl=255 time=731.3 ms
> 64 bytes from 192.168.2.1: icmp_seq=7 ttl=255 time=120.6 ms
> 64 bytes from 192.168.2.1: icmp_seq=8 ttl=255 time=7731.2 ms
> 64 bytes from 192.168.2.1: icmp_seq=9 ttl=255 time=6751.1 ms
> 64 bytes from 192.168.2.1: icmp_seq=10 ttl=255 time=5781.0 ms
> 64 bytes from 192.168.2.1: icmp_seq=11 ttl=255 time=4881.6 ms
> 64 bytes from 192.168.2.1: icmp_seq=12 ttl=255 time=3890.8 ms
> 64 bytes from 192.168.2.1: icmp_seq=13 ttl=255 time=2921.5 ms
> 64 bytes from 192.168.2.1: icmp_seq=14 ttl=255 time=1930.7 ms
> 64 bytes from 192.168.2.1: icmp_seq=15 ttl=255 time=941.3 ms
> 64 bytes from 192.168.2.1: icmp_seq=16 ttl=255 time=110.6 ms
> 
> Is this worthy of involving the Linux Heavyweights at linux-net?

This happened to me once regularly using a X-Link modem, changing the modem
fixed the problem.

Andrew

-- 
Andrew Howell
Managing Director
Informed Technology
E-mail: andrew at it.net.au
Ph: 08 9380 4244  Fax: 08 9380 4354