| 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