Subject: Re: afp alarm child timed out seems to lead to dissappearing server in choser
From: Thomas Kaiser (Thomas.Kaiser@phg-online.de)
Date: Mon Jul 23 2001 - 05:41:56 EDT
on Sun, 22 Jul 2001 03:45:58 +0200, Markus Koch wrote:
> Once in a while the whole appletalk network goes down for a period of 1 to 5
> minutes: the server (and all other macs) dissapear from the choser on every
> computer, without any appearent reason.
Does your switch indicate high traffic / many collissions if the problem
appears?
> Even the windows clients (samba) have problems accessing the server.
They are connecting via TCP/IP, so it's not an AppleTalk-specific problem.
> It almost looks like the network raffic is to much to do anything.
You should check the network connection on lower layers, to see what's going
wrong there.
In these situations, use 'ping' from the servers terminal to check whether
other hosts are reachable _via TCP/IP_ (if your network behaves normal you
can get a list of ip addresses by entering '/usr/sbin/arp -n' on your
server.
To check the AppleTalk-side you can use 'aecho [AppleTalk address]'. You
probably will not be able to use AppleTalk (NBP-) names in this case, so you
should create a list of AppleTalk names to AppleTalk addresses table with
'nbplkup' before.
You should also try to nail the problems down using a packet sniffer like
tcpdump. Maybe there are broadcast storms which prevent the transmission of
normal packets?
> BTW what does this child timed out mean?
After a specific amount of time, the afpd gets no response from a mac, it
thinks the mac had crashed or has been disconnected from the network and
therefore this afp session timed out.
Regards,
Thomas
This archive was generated by hypermail 2b28 : Sun Oct 14 2001 - 03:04:45 EDT