show rmon statistics
User EXEC mode
Privileged EXEC mode
Global configuration mode
Interface configuration mode
Counts of multicast and broadcast packets, total packets sent, undersized and oversized packets, CRC alignment errors, jabbers, collisions, fragments, and dropped events are collected for each port on a RUCKUS ICX Layer 2 switch or Layer 3 switch. The statistics group collects statistics on promiscuous traffic across an interface. The interface group collects statistics on total traffic in and out the agent interface. No configuration is required to collect statistics for the Layer 2 switch or Layer 3 switch. This activity is by default automatically activated at system startup.
Though 48GC modules receive oversized packets and jabbers, they do not support counts
of oversized packets and jabbers, and the output of the
show rmon statistics command reports 0 for both of these counters.
The
show rmon statistics command displays the following information.
| Output field | Description |
|---|---|
| Octets | The total number of octets of data received on the network. This number includes octets in bad packets. This number does not include framing bits but does include Frame Check Sequence (FCS) octets. |
| Drop events | The total number of times an overrun condition has been detected at the port. The port logic could not receive the traffic at full line rate and had to drop some packets as a result. The counter indicates the total number of events in which packets were dropped by the RMON probe due to lack of resources. This number is not necessarily the number of packets dropped, but it is the number of times an overrun condition has been detected. |
| Packets | The total number of packets received. This number includes bad packets, broadcast packets, and multicast packets. |
| Broadcast pkts | The total number of good packets received that were directed to the broadcast address. This number does not include multicast packets. |
| Multicast pkts | The total number of good packets received that were directed to a multicast address. This number does not include packets directed to the broadcast address. |
| CRC align errors | The total number of packets received that were from 64 to 1518 octets long, but had either a bad FCS with an integral number of octets (FCS error) or a bad FCS with a nonintegral number of octets (alignment error). The packet length does not include framing bits but does include FCS octets. |
| Fragments | The total number of packets received that were less than 64 octets long and had either a bad FCS with an integral number of octets (FCS error) or a bad FCS with a nonintegral number of octets (alignment error). It is normal for this counter to increment, because it counts both runts (which are normal occurrences due to collisions) and noise hits. This number does not include framing bits but does include FCS octets. |
| Undersize pkts | The total number of packets received that were less than 64 octets long but were otherwise well formed. This number does not include framing bits but does include FCS octets. |
| Oversize packets | The total number of packets received that were longer than 1518 octets but were otherwise
well formed. This number does not include framing bits but does include FCS octets.
Note: 48GC modules do not support counts of oversized packets and report 0.
|
| Jabbers | The total number of packets received that were longer than 1518 octets and had either
a bad FCS with an integral number of octets (FCS error) or a bad FCS with a nonintegral
number of octets (alignment error). This number does not include framing bits but
does include FCS octets.
Note: This definition of jabber is different from the definition in IEEE-802.3 section 8.2.1.5
(10BASE5) and section 10.3.1.4 (10BASE2). These documents define jabber as the condition
in which any packet exceeds 20 ms. The allowed range to detect jabber is between 20
ms and 150 ms.
Note: 48GC modules do not support counts of jabbers and report 0.
|
| Collisions | The best estimate of the total number of collisions on this Ethernet segment. |
| 64 octets pkts | The total number of packets received that were 64 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 65 to 127 octets Pkts | The total number of packets received that were from 65 to 127 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 128 to 255 octets Pkts | The total number of packets received that were from 128 to 255 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 256 to 511 octets Pkts | The total number of packets received that were from 256 to 511 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 512 to 1023 octets Pkts | The total number of packets received that were from 512 to 1023 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
| 1024 to 1518 octets pkts | The total number of packets received that were from 1024 to 1518 octets long. This number includes bad packets. This number does not include framing bits but does include FCS octets. |
The following is sample output from the
show rmon statistics command.
device# show rmon statistics
Ethernet statistics 1 is active, owned by monitor
Interface 1/1/1 (ifIndex 1) counters
Octets 0
Drop events 0 Packets 0
Broadcast pkts 0 Multicast pkts 0
CRC align errors 0 Undersize pkts 0
Oversize pkts 0 Fragments 0
Jabbers 0 Collisions 0
Packet size counters
64 0 65 to 127 0
128 to 255 0 256 to 511 0
512 to 1023 0 1024 to 10200 0
Ethernet statistics 2 is active, owned by monitor
Interface 1/1/2 (ifIndex 2) counters
Octets 0
Drop events 0 Packets 0
Broadcast pkts 0 Multicast pkts 0
CRC align errors 0 Undersize pkts 0
Oversize pkts 0 Fragments 0
Jabbers 0 Collisions 0
Packet size counters
64 0 65 to 127 0
128 to 255 0 256 to 511 0
512 to 1023 0 1024 to 10200 0
The following is sample output from the
show rmon statistics command for ifIndex 9.
device# show rmon statistics 9
Ethernet statistics 9 is active, owned by monitor
Interface 1/1/6 (ifIndex 9) counters
Octets 0
Drop events 0 Packets 0
Broadcast pkts 0 Multicast pkts 0
CRC align errors 0 Undersize pkts 0
Oversize pkts 0 Fragments 0
Jabbers 0 Collisions 0
Packet size counters
64 0 65 to 127 0
128 to 255 0 256 to 511 0
512 to 1023 0 1024 to 10200 0