ACC Error Guide

ZX25D System Messages
CLASS: Warning 500-599
Chapter 12 267
zx25d 518 Link <#>: Buffer shortage on port. Mux= <#>, Port= <#>,
Subchannel= <#>.
Explanation: The MUX firmware was unable to find a free buffer to
hold an inbound X.25 protocol packet or could not find
a free buffer to transmit a protocol packet (e.g. RR).
The packet has been lost. This may cause severe
operational problems on the X.25 link. This problem
can occur if one or more of the link option words has
the IRX and/or NTX bits set to zero, or the Port-Limit
was set too large, or an application is sending a very
large contiguous message in a single zsend call.
Action: Make sure that both the IRX and NTX bits are set in
all X.25 link option words. If the Port-Limit parameter
value is larger than 20,000, you might try slightly
reducing this value. Make sure that applications break
large messages into smaller chunks (not to exceed 4096
bytes) and transmit the smaller chunks using the M-bit
as appropriate.
zx25d 519 Link <#>: zsetql() failed with error <#>!
Explanation: The zsetql routine to set the queue limits for the X.25
link ZLU has unexpectedly failed. This error is ignored
by the X.25 driver and the X.25 link can be used in a
normal fashion.
Action: Examine the specific reason for the failure and take
corrective action if possible. In most other cases, this
error can be safely ignored. However, if the message
“transmit queue limit exceeded” is seen for an X.25 link
ZLU, then a serious error has occurred. If the problem
persists and you are unable to correct it, contact your
HP support representative.