NS3000/iX Error Messages Reference Manual (36923-90043)

Chapter 22 687
Logging Location Codes Continued
TCP Logging Locations
16202 CLAS0005 MESSAGE: None
CAUSE: An attempt was made to retransmit a packet in loopback.
ACTION: Repeated occurrences indicated a software problem.
16301 CLAS0005 MESSAGE: None
CAUSE: The retransmission interval for a packet has expired without
receipt of an acknowledgment from the remote connection half.
ACTION: This indicates network congestion, or a noisy or loss prone
network. Occasional occurrences are considered normal. Excessive
occurrences resulting in connection disconnects may indicate
nodal/media failure, misconfiguration, severe network bottlenecks, or
software failure.
16401 CLAS0005 MESSAGE: None
CAUSE: An excessive number of retransmissions has caused a negative
advice indication has been sent to the TCP SIP. The SIP will verify that
our route to our destination is still correct.
ACTION: Informative message. No action required. This logging
indicates that TCP has proactively detected potential
route/link/gate/ring failure. If route validation fails and no new route to
the remote host is found, diagnose route failure. Possibilities include
node/media failure and misconfiguration.
16501 CLAS0003 MESSAGE: None
CAUSE: A timer popped after it had already been released.
ACTION: Informative message. No action required. Occasional
occurrences are normal. Excessive occurrences indicate the possibility
of a software error.
16601 CLAS0005 MESSAGE: None
CAUSE: An ICMP source quench packet has been processed for this TCP
connection. The connection will treat the event as a Van Jacobson
retransmission event.
ACTION: Informative message. No action required. Source quench
indicates that some gateway in the path (or the receiving node) is
running low on buffer space. Possibly increase gateway store and
forward buffer pool size or receiving node’s buffer pool size if
configurable.
17001 CLAS0003 MESSAGE: None
CAUSE: The user attempted to open a connection which already exists.
ACTION: User error. Isolate and correct offending program or service.
Submit an CR if necessary.