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Monitoring the Hotwire DSLAM
6-13
8000-A2-GB26-00
May 1998
Table 6-4. Network Protocol Options (3 of 5)
TCP Connection Statistics B-D-C
When you press Return on the TCP Data Statistics screen, the TCP Connection
Statistics screen is displayed, showing a summary of the TCP connection activity on all
interfaces on the card.
connection requests – Number of TCP connections initiated by a process on this card.
connection accepts – Number of TCP connections accepted by this card.
connections established – Number of connections established.
connections closed/dropped – Number of connections closed (normally) including
those dropped.
embryonic connections closed – Number of connections dropped before data
transfer.
segments updated rtt – Number of packets that updated the Round Trip Time (RTT)
and the total number of times TCP attempted to update the RTT.
retransmit timeouts – Number of times a packet had to be transmitted because it was
not acknowledged and the number of times a connection was dropped because a
packet could not be transmitted.
persist timeout – Number of times the TCP persistence timer went off and sent a probe
to the remote system.
keepalive timeouts – Number of times a TCP keepalive request timed out.
keepalive probes sent – Number of TCP keepalive probes sent.
connections dropped by keepalive – Number of connections dropped because the
keepalive timer failed to get any responses.
IP Statistics B-D-D
Displays a summary of the IP activity on all interfaces on the card.
total pkts rev – Total number of IP packets received by this card, with errors broken
down on the right of the screen.
fragments rev – Number of packet fragments received, with dropped fragments on the
right of the screen.
packets were fragmented on transmit – Number of packets that were fragmented on
transmit.
packets were received on transmit – Number of packets that were fragmented on
transmit and the number of fragments that were created by those packets.
packets forwarded – Number of packets that were forwarded to another system.
packets not forwardable – Number of packets that could not be forwarded. (Usually
due to packet errors or routing problems.)
packet redirects sent – Number of redirect messages sent to other systems because
they sent a packet that should not be sent to this card.
network broadcasts received for local networks – Number of network broadcasts
received for local networks.
network broadcasts forwarded by media broadcast – Number of network broadcasts
forwarded by media broadcast.
network broadcasts partially processed – Number of network broadcasts dropped
due to an error.