Status and Statistics
Managing RMON
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 29
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• RMON Oversize Packets—Number of oversized packets (over 1518 octets)
received.
• RMON Fragments—Number of fragments (packets with less than 64 octets,
excluding framing bits, but including FCS octets) received.
• RMON Jabbers—Number of received packets that were longer than 1632
octets. This number excludes frame bits, but includes FCS octets that had
either a bad FCS (Frame Check Sequence) with an integral number of octets
(FCS Error) or a bad FCS with a non-integral octet (Alignment Error) number.
A Jabber packet is defined as an Ethernet frame that satisfies the following
criteria:
- Packet data length is greater than MRU.
- Packet has an invalid CRC.
- RX error event has not been detected.
• RMON Collisions—Number of collisions received. If Jumbo Frames are
enabled, the threshold of Jabber Frames is raised to the maximum size of
Jumbo Frames.
• Frames of 64 Bytes—Number of frames, containing 64 bytes that were
received.
• Frames of 65 to 127 Bytes—Number of frames, containing 65 to 127 bytes
that were received.
• Frames of 128 to 255 Bytes—Number of frames, containing 128 to 255
bytes that were received.
• Frames of 256 to 511 Bytes—Number of frames, containing 256 to 511
bytes that were received.
• Frames of 512 to 1023 Bytes—Number of frames, containing 512 to 1023
bytes that were received.
• Frames Greater than 1024 Bytes—Number of frames, containing 1024 to
2000 bytes, and Jumbo Frames, that were received.
STEP 3 Click Clear Interface Counters to clear RMON statistics counters for the selected
interface.
STEP 4 Click Refresh to manually refresh RMON statistics counters for the selected
interface.
STEP 5 Click View All Interfaces Statistics to view RMON statistics counters for all
interfaces on a single page. The RMON Statistics Table displays the RMON
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