Cisco 220 Series Smart Plus Administration Manual page 28

Status and Statistics
Managing RMON
STEP 3
STEP 4
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
• 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.
Click Clear Interface Counters to clear RMON statistics counters for the selected
interface.
Click Refresh to manually refresh RMON statistics counters for the selected
interface.
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