And if it is AIX 4.3.3, and you are using ATM, know that the default size
of
the arp cache may be too small, and things may be aged out. I'll post
the full explanation in a separate note, since I just tried to check the
archives
and they don't seem to be there at the moment!
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
"Ray" <westphal@accessus.net>@tkg.com on 03/19/2001 07:26:36 PM
Please respond to IBM NetView Discussion <nv-l@tkg.com>
Sent by: owner-nv-l@tkg.com
To: "IBM NetView Discussion" <nv-l@tkg.com>
cc:
Subject: Re: [NV-L] Network connectivity problem on Netview Server
Hi Santosh!
I think we need more information. 1st question - what type of server?
However, here is a few things to check:
Since the loss of connectivity is to devices on the same network
(correct?), check your network adapter(s) on the NetView server.
1) Is it 100MB Full Duplex?
2) Does it match the switch settings? I avoid using auto negotiate on
the switch or server adapter.
3) How many adapters on your server? How many objects on the network
you are having problems with?
4) Have you checked receive buffer stats on the NetView servers
ethernet adapter? i.e entstat -d en0.
Check the No Receive Buffer counter. entstat -r en0 will reset it.
It is incrementing at all?
5) Check your network masks on the objects.
6) Since these objects are on the same network - you should not be
losing routes correct?
If you want routes to remain, check the "no" command route_expire
option.
7) Check your switch statistics for errors on the port.
8) Check your errpt command. Any ethernet adapter errors? Any ethernet
adapter recovery events?
9) Have you checked your cabling?
HTH.
Ray Westphal.
----- Original Message -----
From: z_esm_karekars
To: 'nv-l@tkg.com'
Sent: Monday, March 19, 2001 1:01 AM
Subject: [NV-L] Network connectivity problem on Netview Server
Hi,
I had AIX Ver. 4.3 with FrameWork 3.7 & NetView Ver. 6.0.
Facing problem of Network connetcivity loss to some random nodes on same
N/W, this gets restored some times after reboot of AIX server once, and
sometimes it needs reboot more than once. Is it bug ? I had applied the
patch for Framework available on NetView 6.0 CD.
I had reloaded AIX, Framework, NetView on the same Server to isolate the
problem may be of earlier configuration.
Please reply.
Regards,
Santosh Karekar
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