
DLSw Troubleshooting
114063 Rev. A C-9
The Host computer generates an SABME frame and sends it to Router A. Router
A returns UA and receiver not ready (RNR) frames back to the Host. Router A
then contacts Router B, and Router B sends the SABME contact frame to the
Terminal.
# 12: 04/25/95 22:43:01 DEBUG SLOT 1 DLS Event Code: 45
SSP contact frame rcvd in LLC, conn, state, flag: 30927f70, 4, 201
The Terminal returns an acknowledgement UA packet to Router B. Router B
informs Router A that the contact is accepted. A state change occurs.
# 13: 04/25/95 22:43:01 DEBUG SLOT 1 DLS Event Code: 16
State change in ssp_contact, conn = 30927f70, old state = 4, new
state = 3
Router A sends an acknowledgement UA packet to the Host computer.
# 14: 04/25/95 22:43:01 DEBUG SLOT 1 DLS Event Code: 17
LLC connect_conf frame received
The DLSw circuit reaches the CONNECTED state. Router A and Router B return
receiver ready (RR) packets to their clients.
# 15: 04/25/95 22:43:01 DEBUG SLOT 1 DLS Event Code: 16
State change in connect_conf, conn = 30927f70, old state = 3, new
state = 1
Establishing DLSw/SDLC Connections
Figure C-2 illustrates a sample dual-switch DLSw/SLDC network and the
network packet exchanges that occur during SDLC connection establishment.
Connection establishment generates debug event messages in the log file.
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