I noticed this as well and assumed that was the case, so for my VLAN stats I use the sum of all the ports in a particular VLAN - it makes it difficult to manage if your VLANs change membership frequently, but mine don't so it was just a one-time setup. Here's an example of the target line for my DMZ VLAN, it is just 3 ports but it should give you the idea...
Target[17.2.12.10_DMZ]: 1:[EMAIL PROTECTED] + 2:[EMAIL PROTECTED] + 3:[EMAIL PROTECTED] -----Original Message----- From: Eric Brander [mailto:[EMAIL PROTECTED] Sent: Monday, March 22, 2004 10:58 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [mrtg] Re: Cisco 3550/VLAN ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, March 19, 2004 2:30 PM Subject: [mrtg] Cisco 3550/VLAN I'm sure this question has been asked before, but from the posts I've seen, no one seemed to really answer the question. We're running a Cisco 3550 Catalyst, and I'm trying to monitor throughput of a given VLAN. The only thing that I'm able to do right now is produce MRTG reports on VLAN showing extremely small traffic -- as in 100 or below bits per second. (not kilobit -- BIT) This is impossible as the actual port on the switch itself reports 600kbps. But the VLAN attached to a given switchport doesn't seem to report that traffic. I even tried changing MRTG to reference the switch's IP of a given VLAN's IP block -- still, no go. This is starting to drive me nuts. Anyone run into this, or have any suggestions?! Thanks! -Caleb Intruix Tech, Inc. ----- In my experience, it seems that Cisco reports traffic on a vlan that has passed from one vlan to another. Since all that traffic is on the same vlan, it doesn't report that bit rate. I was puzzled by this at first as well, and never did get an official answer from Cisco. However, I can tell you that on my multi-vlan 4006 I get a large amount of traffic reported on each vlan as a lot of data traverses back and forth across them all. But on my edge network switches, the vlan report shows next to nothing. HTH, Eric Brander Eric_Mailing_List at rednarb dot com -- 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 This message is intended exclusively for the individual or entity to which it is addressed. This communication may contain information that is proprietary, privileged, or confidential. If you are not the named addresses, you are not authorized to read, print, retain, copy, or disseminate this message or any part of it. If you have received this message in error, please notify the sender immediately by e-mail or fax and delete all copies of this message. -- 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
