[c-nsp] SNMP descrepancy

[Drew Weaver]

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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