From: Rocir Santiago <rocirleite@...>
Date: 2009-10-01T23:37:19+09:00
Subject: Re: Problems with SNMP

Hi, Nicol叩s.

Thanks for the reply. My switch works fine with SNMP. It's 3com Baseline 
Switch 2226 Plus. My doubt it's about the ruby code to find the MAC 
address of each computer "pluged" in my switch. I can figure out some 
examples at the doc page of this lib. But when I just try to get the 
ifPhysAddress, the application raises an error and I don't know why.

Here is the code:

_________
require 'snmp'

  ifTable_columns = ["ifIndex", "ifDescr", "ifInOctets", "ifOutOctets", 
"ifPhysAddress"]
  SNMP::Manager.open(:Host => 'xxx.xxx.xxx.xxx') do |manager|
      manager.walk(ifTable_columns) do |row|
          row.each { |vb| print "\t#{vb.value}" }
          puts
      end
  end
_________

I just added the ifPhysAddress to the example in the site. If I just 
remove the ifPhysAddress, it works fine.


Nicol叩s Brailovsky wrote:
> Rocir, you should first check if your switch supports this 
> functionality. If
> it does I'd try to do an snmpwalk through the complete table to find an 
> OID
> providing a list of known mac addresses, which will most likely be 
> grouped
> by interface (port).
> 
> This link may come in handy: http://www.oid-info.com/index.htm
> 
> Regards
> 
> --
> Nicol叩s Brailovsky
>  - http://nicolasb.com.ar/
>  - http://monosinfinitos.com.ar/
> 
> 2009/10/1 Rocir Santiago <rocirleite@gmail.com>

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