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ISDN Connections
V!CAS
ISDN connections remain open
The V!CAS refuses to close an existing ISDN connection.
• Is the bricktrace program running over an ISDN-PPP connection?
The tracer continually sends packets over ISDN which results in a
permanent connection (i.e. the connection can’t be closed).
Unwanted ISDN Connections
Verify the biboAdmLogHostTable.
• Are syslog events being sent to an ISDN-PPP partner? Each time
PPP closes an ISDN connection (after 23 seconds) a new syslog
message is created. If these messages are being sent over ISDN-IP,
this will force a new connection to be opened.
RIP packets are continually routed over ISDN.
• Is there a loop in the local network or a directly connected net-
work? Verify the network configuration or disable RIP with
biboAdmRipUdpPort=0.
Unable to
establish a
connection
If a connection can not be established, you should first inspect the in-
formation being transmitted over the D-channel. This would be done
from a remote host where the bricktrace utility has been installed. Assum-
ing your ISDN module is installed in slot 2, the bricktrace utility could be
used as follows. The host parameter can specify either a hostname or IP
address. The output is redirected to a file, which can be inspected later.
bricktrace -H
hostID
-h23pi 0 0 2 > dchan &
Then kill the running process and inspect file “dchan” to verify what
was actually transferred over the D channel.
