I am trying to monitor the bandwidth of some VLANs on a Cisco CAT3550EMI switch. I am terminating the VLANs L3 on this switch but am seeing no traffic on reports I am generating. I know I have about 50-100kbps worth of traffic flowing on the VLAN but I am getting reports of 60bps. I am trunking to outside Layer2 switches so monitoring the physical port is not an option. I have included a message below that I found on the web with the same problem. Is the response on the included message the answer?
Thank you, Gilbert ----- 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 _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
