PLANET IGS-10020HPT - Manual (Page 118)

User’s Manual
Receive and Transmit Size Counters
The number of received and transmitted (good and bad) packets split into categories based on their respective frame
sizes.
Receive and Transmit Queue Counters
The number of received and transmitted packets per input and output queue.
Receive Error Counters
Object Description
The number of frames dropped due to lack of receive buffers or egress
congestion.

Rx Drops
The number of frames received with CRC or alignment errors. 
Rx CRC/Alignment
The number of short frames received with valid CRC. 
Rx Undersize
The number of long frames received with valid CRC. 
Rx Oversize
The number of short frames received with invalid CRC. 
Rx Fragments
The number of long frames received with invalid CRC.  Rx Jabber
The number of received frames filtered by the forwarding process.  Rx Filtered
1 Short frames are frames that are smaller than 64 bytes.
2 Long frames are frames that are longer than the configured maximum frame length for this port.
Transmit Error Counters
Object Description
The number of frames dropped due to output buffer congestion. 
Tx Drops
The number of frames dropped due to excessive or late collisions. 
Tx Late/Exc. Coll.
Buttons
: Click to refresh the Page immediately.
: Clears the counters for all ports.
Auto-refresh : Check this box to enable an automatic refresh of the Page at regular intervals.
4.4.4 SFP Module Information
The IGS-20040MT supports the SFP module with digital diagnostics monitoring (DDM) function. This feature is also known
as digital optical monitoring (DOM). You can check the physical or operational status of an SFP module via the SFP Module
Information Page. This Page shows the operational status, such as the transceiver type, speed, wavelength, optical output
118