[c-nsp] SNMP descrepancy
Drew Weaver
drew.weaver at thenap.com
Wed Jun 23 14:34:21 EDT 2010
The actual machine for:
Internet 10.1.164.42 146 0030.48bf.3230 ARPA Vlan643
Was down at the time (like completely down...) and I wouldn't have expected to even see this in the sh ip arp vlan 643 output at all, but since it did show up in there I am wondering why it didn't show up in the mac-address-table and more importantly is there a way to query the 'arp table' for just vlan 643 via SNMP that anyone is aware of? I also noticed this same thing occurs sometimes when Windows firewall is enabled on Windows 2008 machines. I have to disable the firewall and ping the machine before it will show up in those SNMP .1.3.6.1.2.1.17.4.3.1.1 even though the host is actually up and running.
Very puzzled.
thanks,
-Drew
-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Phil Mayers
Sent: Wednesday, June 23, 2010 11:37 AM
To: Matlock, Kenneth L
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] SNMP descrepancy
On 23/06/10 16:31, Matlock, Kenneth L wrote:
> Actually, the 'public at 643' community he has there gives the table for
> VLAN 643.
So it is.
Perhaps I've misunderstood the question; maybe the OP is asking why
there's an entry in the ARP table, but no MAC/FDB entry for that MAC in
that vlan.
In which case; good question
What does:
sh ip arp vlan 6430
sh mac-address-table dyn vl 643
...say at that time?
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