Subject: Re: [netatalk-admins] zip ignoring gnireply
From: Yuji Shinozaki (yuji@physics.unc.edu)
Date: Thu Jan 14 1999 - 17:43:37 EST
On Thu, 14 Jan 1999, Danny Rice wrote:
> I get 100s of these messages each day, usually in clusters like:
>
> Jan 13 09:47:10 siren atalkd[509]: zip gnireply from 44544.52 (eth0 b2)
> Jan 13 09:47:10 siren atalkd[509]: zip ignoring gnireply
>
> What does it mean? Is this a problem? What is zip? Is 'zip' the zip
> compression program? Is it trying to talk to atalkd (locally?
> remotely?). If I uninstalled zip locally would these messages go away?
> Would that hurt anything if I don't use zip for anything else?
>
ZIP in this context is Zone Information Protocol. And has nothing to do
with zip compression. ZIP (as you might well guess) pertains to
information about zones and available node numbers. When an appletalk
node comes up it must either get the zone and node address information for
the first time or verify the info it already has. It does this by sending
out an AARP (Appletalk Address Resoultion Protocol) packet and a ZIP
GetNetInfo (gni) packet to the Appletalk broadcast address, requesting
either information about the zone that it thinks it should be in, or a
request for information about the default zone. An Appletalk router picks
this up and sends a ZIP GetNetInfoReply (gnireply). The router will
either send it directly to the nodes appletalk address or to the Appletalk
broadcast address (where all appletalk nodes listen) depending on whether
the node sent a ZIP a legitimate node address.
Usually on a stable Appletalk network with well behaved nodes, you should
only have gni broadcasts (that everyone hears) only occasionally, when a
new host is introduced or somehow needs to change its information.
I believe the "ignoring zip gnireply" is your netatalk host (a node)
saying "hey I just got this gnireply on the appletalk broadcast address
and I didn't request one -- I will ignore it".
The fact that you getting lots of these may be because you have lots of
mac nodes that are changing networks, or just coming online, or losing
their net info, or that are badly behaved (many old appletalk devices
suffer from a problem that can cause GNI storms like this).
Below, it looks like your netatalk host receives a gnireply that was
intended for it and configures itself (adjusts the net node number and
zone multicast address) appropriately. Although I am not sure what the
"skip reply" means.
I thought I was going to give you a short answer, but alas I didn't ;-).
yuji
----> Other zip messages I occasionally get are: > > Jan 13 09:36:44 siren atalkd[509]: zip gnireply from 44544.252 (eth0 12) > Jan 13 09:36:44 siren atalkd[509]: zip_getnetinfo for eth0 > Jan 13 09:36:45 siren atalkd[509]: zip_packet configured eth0 from 44544.252 > > Jan 13 09:36:53 siren atalkd[509]: zip skip reply 44544-44546 from 44544.52 (no query) > Jan 13 09:36:53 siren atalkd[509]: zip skip reply 44544-44546 from 44545.250 (no query) > Jan 13 09:36:53 siren atalkd[509]: zip skip reply 44544-44546 from 44545.253 (no query) > > Thanks, Danny >
Yuji Shinozaki Systems Administrator yuji@physics.unc.edu Dept of Physics and Astronomy http://www.physics.unc.edu Univ. of North Carolina - CH (919)962-7214 (voice) CB 3255 Philips Hall (919)962-0480 (fax) Chapel Hill, NC 27599
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