[mrtg] script problem

[Justin Shore]

Greetings all.  I wrote up this little script to find the current 
port that a DSL user was connected to on our Cisco 3660.  The script 
works great except for when the user signs off.  It emails me every X 
number of minutes with an error like this one:

Error in packet
Reason: (noSuchName) There is no such variable name in this MIB.
This name doesn't exist:
ip.ipRouteTable.ipRouteEntry.ipRouteIfIndex.63.237.114.173

Its not a major thing but it is a pain in the ass.  Could someone 
offer a way to make this script return a 0 if its encounters the 
error?  Here's the script.

TIA
  Justin

[mrtg at ipgate bin]$ cat get-dynamic-port
#!/bin/bash
HOST="$1"
COMMUNITY="$2"
TARGET="$3"
SNMPCMD="/usr/local/bin/snmpget"
GET_PORT="ip.ipRouteTable.ipRouteEntry.ipRouteIfIndex"
GET_IN="interfaces.ifTable.ifEntry.ifInOctets"
GET_OUT="interfaces.ifTable.ifEntry.ifOutOctets"
GET_UPTIME="system.sysUpTime.0"

PORT=`$SNMPCMD $HOST $COMMUNITY $GET_PORT.$TARGET |awk '{print $3}'`;
#echo "$PORT";
IN=`$SNMPCMD $HOST $COMMUNITY $GET_IN.$PORT |awk '{print $3}'`;
echo "$IN";
OUT=`$SNMPCMD $HOST $COMMUNITY $GET_OUT.$PORT |awk '{print $3}'`;
echo "$OUT";
UPTIME=`$SNMPCMD $HOST $COMMUNITY $GET_UPTIME |awk '{print $5,$6, $7}'`;
echo "$UPTIME";
echo "$HOST";

--
Justin Shore
K-State Linux Distro Mirror, Sysadmin
macdaddy at vinnie.ksu.ksu.edu
<http://vinnie.ksu.ksu.edu/mirror/rpm2html>
<ftp://vinnie.ksu.ksu.edu/pub/mirror/linux>

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