It's possible. I'm going to assume you're not too well versed in this so if my explanation is too slow, you've been warned.
Most routers have a set of MIBs which can be read via SNMP. If your router has a MIB that reports CPU utilization, you can do this easily. You would simply write a script on your rrdtool server that polls the router with the correct OID for the CPU variable. Assuming you're using Linux or unix, snmpget would get one variable, and snmpwalk would get a bunch of them. If you're using Windows, you'd need to research similar tools. In order to do this, you'd need to enable SNMP polling on the routers, set a read-only community string, and probably enable access from the server to the router (probably on the router's ACLs or a firewall.) Once you get the data, you'd use the same script to insert the data into an rrd file. You could create one rrd file for all of the routers (OK if you know that you'll never add or subtract more routers), or you can insert the data for a router into its own rrd file. Depending upon how good you are with scripting (I typically use perl) you can write the script such that it checks for the existence of the rrd file, and if it doesn't exist, it automatically creates it. This is great if you plan on adding new routers. Generating the graph could be done in this script or in a subsequent script. Example, I may get statistics every minute, but I might only update the graph every 15 minutes. As far as the color coding goes, the rrdgraph command allows you to set that when you create the graph. It also allows you to pull data from multiple rrd files and cobine them onto one graph in the manner you've requested. If none of this sounds familiar, you've got a learning curve ahead of you. Otherwise, it's pretty trivial. The only gotcha is the router and how good its MIB support is. It is possible that the router uses something other than SNMP to report its statistics, and if so, you could simply substitute that in place of the SNMP references above. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of parmanand rai Sent: Friday, August 29, 2003 12:57 AM To: rrd-users@list.ee.ethz.ch Subject: [rrd-users] Multiple CPU Graph Hi ppl, I have a quick question, is there a way to plot a graph of five different routers CPU, each having their own colours to differentiate utilizations. I am not looking at avg or summarization usage but rather individual statistics. Any help would be great. Best Regards, Rai _________________________________________________________________ Send a fun phone greeting to your friend! http://www.msn.com.sg/mobile/fungreetings/ -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi