RE: [nv-l] Cursed Cisco Trap Formats

["Barr, Scott" <Scott_Barr@csgsystems.com>]

GUYS - THANKS FOR ALL THE INPUT BUT I DO NOT CARE WHAT THE TRAPD.CONF FORMAT LOOKS LIKE. I know it is wrong, I have already modified it to display 5 arguments.

 

I only care about the data passed into a script - how many variables are passed as environment variables in an action node call of a script. When you use an action node, you do not recieve the variables as command line type arguments they are only available via enviornment variables. Here is a script that deals with frame relay DLCIs:

---

#!/usr/bin/perl
# ****************************************************************
# *** Frame Relay Trap Processor                               ***
# ****************************************************************
# *** Status: invalid (1)                                      ***
# ***         active (2)                                       ***
# ***         inactive (3)                                     ***
# ***                                                          ***
# *** frDLCIStatusChange TRAP-TYPE                             ***
# ***   ENTERPRISE frame-relay                                 ***
# ***   VARS  {frCircuitIfIndex,frCircuitDlci,frCircuitState } ***
# ***   DESCRIPTION                                            ***
# ***      "This trap indicates that the indicated Virtual     ***
# ***       Circuit  has changed state.  It has either been    ***
# ***       created or invalidated, or has toggled  between    ***
# ***       the active and inactive states."                   ***
# ****************************************************************

#
open (TRAPDATA, ">>/usr2/SysLogTraps.log");

 

@data = "">$TimeStamp = join(' ',@data[1],@data[2],@data[3]);

 

$Origin = $ENV{'NVA'};
$frCircuitIndex = $ENV{'NVATTR_1'};
$frCircuitDLCI = $ENV{'NVATTR_2'};
$frCircuitState =  $ENV{'NVATTR_3'};

 

if ($frCircuitState == 1 )
{
 # *** DLCI Status Change to Invalid ***
 $Status = "Invalid";
 $MsgText = join(" ",$TimeStamp,"Router: ",$Origin," DLCI: ",$frCircuitDLCI," is now ",$Status,"\n");
        `echo '$MsgText' | mailx -s '$MsgText' scott_barr\@csgsystems.com`;
 print TRAPDATA $MsgText;
}

 

elsif ($frCircuitState == 2 )
{
 # *** DLCI Status Change to Active ***
 $Status = "Active";
 $MsgText = join(" ",$TimeStamp,"Router: ",$Origin," DLCI: ",$frCircuitDLCI," is now ",$Status,"\n");
        `echo '$MsgText' | mailx -s '$MsgText' scott_barr\@csgsystems.com`;
 print TRAPDATA $MsgText;
}

 

elsif ($frCircuitState == 3 )
{
 # *** DLCI Status Change to Active ***
 $Status = "Inactive";
 $MsgText = join(" ",$TimeStamp,"Router: ",$Origin," DLCI: ",$frCircuitDLCI," is now ",$Status,"\n");
        `echo '$MsgText' | mailx -s '$MsgText' scott_barr\@csgsystems.com`;
 print TRAPDATA $MsgText;
}

 

`echo '$MsgText' >> /usr2/router_avail.log`;

 

close (TRAPDATA);

---

 

Notice that in the beginning of the script the variables from the trap are pulled out using Environment variables. There is (that I know of) NO environment variable that tells you how many environment variables have been passed. Thus, I cannot tell if there are 3, 4 or 5 arguments in the trap. I apologize if my previous messages haven't made this clear and if my frustration level seems to be rising.

-----Original Message-----
From: Ken.Garst@kp.org [mailto:Ken.Garst@kp.org]
Sent: Thursday, October 03, 2002 2:09 PM
To: Barr, Scott
Cc: nv-l@lists.tivoli.com
Subject: RE: [nv-l] Cursed Cisco Trap Formats

The simple stupid way is to define the format for the specific trap in trapd.conf as "$*", which shows all arguments, no matter how many are sent..

As you know, the format error comes about because in your trapd description you have specified a particular variable that is not there such as $4 when only 3 were sent..

Regards,
ken