I'll bite: Why do you need to know the number of active addresses? My recommendation: monitor your RAS for the number of active connections, and graph that. Then write a script on one of your servers that outputs the number of leased lines you have (or if you really need, the number of IP addresses being used by those leased lines), and graph that.
Chances are you're not getting billed per active address, and you're probably not billing customers per active address. Make life easier for yourself, and focus your monitoring on bandwidth (so you don't run out) and dialup connections (so you don't run out of dial tone). Pete Templin IP Network Engineer TexLink Communications (210) 892-4183 [EMAIL PROTECTED] -----Original Message----- From: michael smith [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 19, 2003 3:34 AM To: Jay Hennigan Cc: [EMAIL PROTECTED] Subject: [mrtg] Re: Number of Ips Thanks for your reply . For clarification , I need a tool that count the Number of active IPs for all over the network " dialup and Leased lines" , and graph them . Thanks in advance Michael Jay Hennigan <[EMAIL PROTECTED]> wrote:On Tue, 18 Mar 2003, michael smith wrote: > I am searching for OID for cisco routers , thats give me number of used > IPs per interface or per router and also the available IPs that can be > used per interface or also per router . Per interface, you'll want to calculate it from the network mask applied to the interface for available IPs directly connected. However, the total amount of IPs that can be routed to an interface is a whole different animal, and can be either static or dynamic. For the number of directly connected IPs, take the ones' complement of the netmask in binary, subtract three*, and that's the number of hosts. As to how many of them are actually in use, that's a bit tougher. The OID for IP subnet mask or network mask is what you want. Unnumbered interfaces, NAT, etc. can give unreliable or wrong results. Per router? That's a whole different animal, and if you have a default route it could be, well... rather large. I don't see how MRTG would come in to play here. > If anyone know that pls advice Tell us what the problem is that you're trying to solve with this question and there is a good chance someone here has done it, though I suspect maybe not using MRTG. Netmask changes on router interfaces aren't normally the type of thing one needs to graph every five minutes. :-) * one for the network all-zeros address, one for the broadcast all-ones, and one for the interface itself = three. -- Jay Hennigan - CCIE #7880 - Network Administration - [EMAIL PROTECTED] NetLojix Communications, Inc. - http://www.netlojix.com/ WestNet: Connecting you to the planet. 805 884-6323 --------------------------------- Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
