By default (S/K/N series, not sure about the rest) we gather RMON history every 30 seconds and every 30 minutes. We keep about 50 samples of each for every port and make this available via CLI or SNMP. We’ve had some problems calculating the bandwidth number in the past depending on the ports operating speed. More recent code should function as described below:
Our RMON implementation gathers data for both the receive and transmit activity as if we had inserted a probe in the middle of the full duplex cable. Future code will allow you to configure this behavior to monitor rx, tx, or rx&tx. Today, since the data reported is rx&tx we calculate bandwidth based on 2x the port speed. The “show rmon history” CLI offers the option to display the most recent 30 seconds, 5 minutes or 25 minutes. This output is a summary of the 30 second counters for the specified period. S8-202(su)->show rmon history wide ge.1.1 Interface Index Interval Start Int Util Octets Packets Broadcast Multicast Drop Evts Collisions Jabbers CRC Errors Undersize Oversize Fragments ---------- ----- ------------------- ---- ---- -------------------- -------------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ge.1.1 1001 2013-01-16 10:34:27 30 0% 11560 135 35 95 0 0 0 0 0 0 0 ge.1.1 1001 2013-01-16 10:34:57 30 0% 11823 140 40 99 0 0 0 0 0 0 0 … S8-202(su)->show rmon history interval 5min ge.1.1 wide Interface Index Util Octets Packets Broadcast Multicast Drop Evts Collisions Jabbers CRC Errors Undersize Oversize Fragments ---------- ----- ---- -------------------- -------------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ge.1.1 1001 0% 153020 1579 176 1089 0 0 0 0 0 0 0 *From:* Sillsby, David [mailto:[email protected]] *Sent:* Wednesday, January 16, 2013 8:48 AM *To:* Enterasys Customer Mailing List *Subject:* Re: [enterasys] Mib for 1 min and 5 min average for port throughput Hi Guys, Have you looked at RMON history? The default is a 30 minute window but it is configurable if you must have 1 and 5 minute intervals. The CLI command is "show rmon history <port#>" Regards, Dave Sillsby Escalation Support Engineer Enterasys Networks 9 Northeastern Blvd Salem, NH 03079 "There is nothing more important than our customers." On Wed, Jan 16, 2013 at 8:24 AM, Wyland, Tony <[email protected]> wrote: I too have asked about this functionality in the CLI and Enterasys points to NetSight BUT the times that this capability is the most important is when communications from NetSight may not be possible due to yuckness on the switch/network. On non-Enterasys switches, this has been very helpful to locate a source port of “junk” (extreme traffic or errors) that was dragging a switch down. You find the port, disable it and work on finding the real source of the problem while most of the users are become happy quicker on a now working switch stack. Just a plug that it would still be a very useful feature that is implemented on many other brands. Don’t get me wrong, we love our Enterasys switches and there are many things done the way we like. Tony Wyland Messiah College *From:* Markus Kaiser [mailto:[email protected]] *Sent:* Wednesday, January 16, 2013 3:29 AM *To:* Enterasys Customer Mailing List *Subject:* Re: [enterasys] Mib for 1 min and 5 min average for port throughput Hi, if you use NetSight console, mark a port in the normal port flexview or interface summary flexview, right-click and select "Port Monitor". Once the window and port information is shown wait at least 30 seconds (refresh interval) and you will see the same information like at Cisco's "show interface". Hope this helps. Kind regards, Markus ___________________________ On 16.01.2013, at 04:49, John Kaftan <[email protected]> wrote: Just came over from Cisco and we used to be able to do a "Show Interface" command and see the 5 min average utilization for a specific port. It was nice to be able to see that. I guess Cisco was just calculating that for us as it went along. Does Enterasys do this? Is there a Mib I can hit for a 5 min port utilization average? I don't see it in the CLI so I am thinking not. I did find the flexview for port utilization but it looks like it is calculating that after you open the flexview. I would like to be able to just pull that info up on the fly like when doing the "show system utilization" command. I don't want to wait 5 min to get the 5 min average. What I am doing is creating an ultimate interface flexview, i.e., one view for all of the port info I am typically looking for. Thanks -- John Kaftan IT Infrastructure Manager Utica College - --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] - --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] - --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] - --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
