From: Henk Van Lingen <henk@...>
Date: 2009-07-24T05:11:45+09:00
Subject: How to handle timeouts in SNMP::Manager walks

Hi,

Maybe a simple thing, but I can't get a clear google answer.

I'm using SNMP::Manager to walk a switch for mac-adresses. When some
switch isn't there, i get a timeout error. I want to handle this
exception. What is the preferred way to do that? My code is something
like this:

dot1dTp_columns = ["dot1dTpFdbAddress", "dot1dTpFdbPort",
"dot1dTpFdbStatus"]
SNMP::Manager.open(:Host => "#{device_name}",
                   :Community => '*****',
                   :MibModules => ["BRIDGE-MIB", "SNMPv2-MIB","IF-MIB",
                                   "SNMPv2-SMI"]
                  ) do |manager|

    manager.walk(dot1dTp_columns) do |address,port,status|
      mac     = address.value.unpack("H2H2H2H2H2H2").join(":").to_s
      port    = port.value.to_s
      status  = status.value.to_s

    [ insert results in db ]

    end
  end
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