North American Network Operators Group
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Re: Initial Route Server Stats for MAE-East

  • From: Gerald Andrew Winters
  • Date: Mon Oct 23 10:56:47 1995 
 
 
Hello,       
 
  I can't resist jumping into this disscussion.  I think
its clear that there is much work to be done on router/IP
performance.  The question then is what can be done in the
meantime, until said work is completed?  
  Here is a script I wrote that will work on cisco routers.
The script takes advantage of cisco's enterprise specific MIB.
There are 3 SNMP variables yielding CPU busy percentage. 
The first is CPU busy percentage in the last 5 seconds of
scheduler time.  The other two are 1 and 5 minute                              
exponentially-decayed moving averages.  The CPU busy metrics
can yield interesting results, for example %'s above 40% indicate
a busy router.  I was able to generate some interesting graphs
awhile back for our cisco routers.
  For more information, use the oid's in the script as pointers
into the cisco mib.  And here is the script for anyone who
is interested.
 
--Gerald Winters <[email protected]>
 
#!/usr/local/bin/perl
 
@mib_objs = ("1.3.6.1.4.1.9.2.1.56.0",
  "1.3.6.1.4.1.9.2.1.57.0",
  "1.3.6.1.4.1.9.2.1.58.0");
 
for ($i = $num_values = 0; $i < 3; $i++) {
        foreach (`/afs/umich.edu/user/g/e/gerald/CISCO/snmpget
  -h 141.211.128.1 @mib_objs[$i]`) {
                if (/value:/) {
                        $num_values++;
                        @values[$i] = /\w+\W+\w+\W+(\w+)/;
                }
        }
}
 
if ($num_values == 3) {
        print "@values[0] @values[1] @values[2] ".`date`;
}
else {
        print "0 0 0 ".`date`;
}