3Com NJ220 manual RMON Counters

Power forwarding	Power forwarding Port number 1 can be used with any standard
	networking device as well as to power a device such as a VoIP
	telephone on a network that uses IEEE 802.3af-compatible Power
	Over Ethernet.
RMON Counters
InUnicasts	Total valid frames received with a unicast Destination Address.
	A valid frame has a good FCS and its size is greater than 64
	bytes and less than 1518 for non tagged frames, 1522 for
	tagged frames, or 1535 if MaxFrameSize =1 (set in global
	control register).
InBroadcasts	Total valid frames received with destination address equal to
	FF:FF:FF:FF:FF:FF.
InPause	Total pause frames received.
InMulticasts	Total valid frames received with multicast destination address that
	are not counted in InBroadcasts or InPause.
InFCSErr	Total frames received with a valid length and an invalid FCS.
AlignErr	Total frames received with valid length that have an invalid FCS
	and a non-integral number of octets.
InGoodOctets	Total data octets received in frames with a valid FCS. Undersize
	and oversize frames are included. The count includes the FCS
	but not the preamble.
InBadOctets	Total data octets received in frames with an invalid FCS;
	fragments and jabbers are included, The count includes the FCS
	but not the preamble.
Undersize	Total frames received with a length	of less than 64 octets but a
	valid FCS.
Fragments	Total frames received with a length	of less than 64 octets and
	an invalid FCS
In64Octets	Total frames received with a length	of exactly 64 octets,
	including those with errors.
In127Octets	Total frames received with a length	of between 65 and 127
	octets inclusive, including those with errors.
In255Octets	Total frames received with a length	of between 128 and 255
	octets inclusive, including those with errors.
In511Octets	Total frames received with a length	of between 256 and 511
	octets inclusive, including those with errors.
In1023Octets	Total frames received with a length	of between 512 and 1023
	octets inclusive, including those with errors.
InMaxOctets	Total frames received with a length	of between 1024 and
	MaxSize octets inclusive, including those with errors.
Jabber	Total frames received with a length of more than MaxSize octets
	but with an invalid FCS.
Oversize	Total frames received with a length of more than MaxSize octets
	but with a valid FCS.

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