The port I chose is very lightly utilized (less than 1%).
% utilization is the average utilization for the sample period. In my case I showed an excerpt of 30 second intervals. The octets are bytes for this interval. Same for packets and errors. These are the “deltas” not the raw port counts so no need to do math. I find it really helpful to see the data in columns. To do this you must disable the pager “set length 0” and then use the “wide” keyword with the rmon command. Here is output from another switch which experienced “a burst” of activity that brought utilization on the port up to 3 %. Stretch your email window wide enough to see the table below properly formatted. Note how easy it is to see the burst of activity in the octet or pkts column. The Utilization column reflects this activity. We hold a about 25 minutes of data for the 30 second intervals and 25 hours of data for the 30 minute intervals. I find this much more useful than a single current utilization counter because it allows me to see how traffic normally flows thru the port and compare it to what is happening now (or just happened an hour ago). NHSAL-IDF2-SW2(su)->show rmon history tg.11.1 wide Interface Index Interval Start Int Util Octets Packets Broadcast Multicast Drop Evts Collisions Jabbers CRC Errors Undersize Oversize Fragments ---------- ----- ------------------- ---- ---- -------------------- -------------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- tg.11.1 12201 2013-01-16 15:53:15 30 1% 546989396 596569 2245 879 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:53:45 30 2% 1117736383 1009168 1682 708 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:54:15 30 3% 1845479905 1490266 2073 704 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:54:45 30 2% 1298025010 1149088 1784 648 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:55:15 30 0% 145667791 298144 1547 645 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:55:45 30 0% 216321943 282335 1954 825 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:56:15 30 0% 97992486 213491 1943 689 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:56:45 30 0% 112225560 204147 1739 659 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:57:16 30 0% 152944788 236587 1991 803 0 0 0 0 0 0 0 tg.11.1 12201 2013-01-16 15:57:45 30 0% 312351337 373758 2252 734 0 0 0 0 0 0 0 *From:* John Kaftan [mailto:[email protected]] *Sent:* Wednesday, January 16, 2013 11:10 AM *To:* Enterasys Customer Mailing List *Subject:* Re: [enterasys] Mib for 1 min and 5 min average for port throughput Ernie: Trying to make sense of this output below. Would I have to do the math to get my number. i.e. subtract Octets and devide by seconds, or is there a way to just see the average per interval from the CLI? I see % utilization which could be helpful but it is 0 for both your example and mine. Perhaps that doesn't show anything unless we get to a certain level of throughput. I see how to do it now in NS and OneView. It would be nice to be able to do it from the CLI too but if I have to do the math I'll stick to NS. Thanks 1188391-800485 = Sample 1066 Interval Start: 23 days 5 hours 0 minutes 30 seconds Drop Events = 0 Undersize Pkts = 0 Octets = 800485 Oversize Pkts = 0 Packets = 5432 Fragments = 0 Broadcast Pkts = 3 Jabbers = 0 Multicast Pkts = 44 Collisions = 0 CRC Align Errors = 0 Utilization(%) = 0 Sample 1067 Interval Start: 23 days 5 hours 31 minutes 52 seconds Drop Events = 0 Undersize Pkts = 0 Octets = 1188391 Oversize Pkts = 0 Packets = 8913 Fragments = 0 Broadcast Pkts = 5 Jabbers = 0 --More-- <space> next page, <cr> one line, <q> quit Multicast Pkts = 51 Collisions = 0 CRC Align Errors = 0 Utilization(%) = 0 JFK-D2(su)-> On Wed, Jan 16, 2013 at 10:09 AM, Ernie Eaton Jr <[email protected]> wrote: 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] -- 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]
