Enable the Ethernet History Group

You also can configure history collection over port 2.

1. Enter Global Configuration mode for the interface.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/15

2. Enable the history group on the specified interface (port 15).

   SEFOS(config-if)# rmon collection history 1 buckets 25 interval 30
   SEFOS(config-if)# end

3. Verify the entries.

   SEFOS# show rmon history 1
    
   RMON is enabled 
   Entry 1 is active,  and owned by myTest
    Monitors ifEntry.1.15 every 30 second(s)
    Requested # of time intervals, ie buckets, is 25, 
    Granted # of time intervals, ie buckets, is 25, 
     Sample 1 began measuring at Jul  9 03:51:07 2010
      Received 3124 octets, 31 packets,
      0 broadcast and 0 multicast packets,
      0 undersized and 0 oversized packets,
      0 fragments and 0 jabbers,
      0 CRC alignment errors and 0 collisions,
      # of dropped packet events is 0
      Network utilization is estimated at 0
     Sample 2 began measuring at Jul  9 03:51:37 2010
      Received 3124 octets, 31 packets,
      0 broadcast and 0 multicast packets,
      0 undersized and 0 oversized packets,
      0 fragments and 0 jabbers,
      0 CRC alignment errors and 0 collisions,
      # of dropped packet events is 0
      Network utilization is estimated at 0
     Sample 3 began measuring at Jul  9 03:52:07 2010
      Received 3124 octets, 31 packets,
      0 broadcast and 0 multicast packets,
      0 undersized and 0 oversized packets,
      0 fragments and 0 jabbers,
      0 CRC alignment errors and 0 collisions,
      # of dropped packet events is 0
      Network utilization is estimated at 0