Status and Statistics
Managing RMON
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 28
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Viewing RMON Statistics
The Statistics page displays detailed information regarding packet sizes and
some information regarding physical layer errors. The information shown is
according to the RMON standard. An oversized packet is defined as an Ethernet
frame with the following criteria:
• Packet length is greater than MRU byte size.
• Collision event has not been detected.
• Late collision event has not been detected.
• Received (Rx) error event has not been detected.
• Packet has a valid CRC.
To view RMON statistics and/or set the refresh rate:
STEP 1 Click Status and Statistics > RMON > Statistics.
STEP 2 Enter the following information:
• Interface—Select the port or LAG for which RMON statistics are displayed.
• Refresh Rate—Select the time period that passes before RMON statistics
are refreshed.
The following fields are displayed for the selected interface:
• RMON Received Bytes (Octets)—Number of octets received, including
bad packets and FCS octets, but excluding framing bits.
• RMON Drop Events—Number of packets that were dropped.
• RMON Received Packets —Number of packets received, including bad
packets, Multicast packets, and Broadcast packets.
• RMON Broadcast Packets Received—Number of good Broadcast packets
received. This number does not include Multicast packets.
• RMON Multicast Packets Received—Number of good Multicast packets
received.
• RMON CRC & Align Errors—Number of CRC and Align errors that have
occurred.
• RMON Undersize Packets—Number of undersized packets (less than 64
octets) received.
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