HP NetRider manual Field Description

	Displaying the Internet Counters
Field	Description
IP Fragments Dropped:	Total number of IP fragments dropped due to either a
	lack of memory to store the fragment or received a
	duplicate fragment.
IP Error in Header:	Total number of IP datagrams received with errors in the
	header. These are discarded.
Internet Connections	The following counters contain statistics on
	connections:
Requested:	Number of outgoing Telnet connect attempts made by
	users.
Accepted:	Number of incoming TCP connections accepted by
	Telnet. This count includes those connections accepted
	by Telnet then dropped due to no physical port
	available.
Established:	Number of connections established by TCP. This count
	includes those connections accepted by Telnet then
	dropped due to no physical port available.
Closed:	Number of connections closed by a user or remote host.
Dropped:	Number of connections dropped, because of a reset from
	the remote host, unsuccessful retransmission, keepalive
	timeout, protocol error, or aborted by Telnet due to lack
	of available physical ports.
ICMP Messages	The following counters contain statistics on ICMP
	messages:
Transmitted:	Total number of ICMP messages transmitted by the
	access server.
Received:	Total number of ICMP messages received by the access
	server.
Dropped:	Total number of ICMP messages dropped by the access
	server, because of an error in the ICMP message, such
	as incorrect code, checksum error, or incorrect length.
Destination	Total number of ICMP Destination Unreachable
Unreachable:	messages received by the access server. Usually
	received when a connect attempt fails because either the
	TCP or UDP port is unknown at the remote host, or the
	host (or the host’s network) is unreachable.

TCP/IP Network Characteristics 7-23