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20-12 SmartSwitch 1800 4.0 User Guide, Rev 01
Frame Relay Ports
The following figure shows an example of a frame relay port display:
Figure 20-7 Frame Relay Line Monitor Display
[C],[E]
from Main Menu
There are two types of frame: status and data. On each line of either type, the leftmost
field shows the DLCI number.
The example in Figure 20-7 shows status frames in ANSI T1.617 Annex D.
format. This and LMI (Rev 1) format are described under "Status
Exchanges" on page 20-12.
Status Exchanges
Each status exchange line contains (at the end) a pair of 3-digit numbers that are the
next and current sequence numbers. The types of status exchange will be one of these:
●
Full Status Enquiries, which are sent by the frame relay DTE (i.e., the Smart-
Switch 1800).
●
Full Status Responses, which help the DTE learn which DLCIs are available for
sending/receiving data. The frame relay DCE (switch) should report a DLCI as
active only when it has a path through the frame relay network. The status of a
DLCI will be reported as
N
(new) or
A
(active). A DLCI is reported as new if
this is the first time it is being reported to the DTE. A DLCI reported as active
will (if not already done) transition the frame relay DLCI on the Virtual Con-
nections Display (
[C], [C]
from the Main Menu) to
Data_trans
and the port Port
Status Display (
[C], [B]
from the Main Menu) to
Operational
.
16:23:58:00 R 0016 D (0008) 0308518167800131
16:23:59:10 R 0016 D (0008) 0308518167800331
0000 LIV Status Enquiry 135/134
16:24:18:00 R 0016 F (0008) 0308518167800131
16:23:58:00 R 0016 F (0008) 0308518167800131
16:23:58:00 R 0016 F (0008) 0308518167800331
16:23:58:00 R 0016 B (0008) 0308518167800331
0000 Full Status Enquiry 136/135
16:23:58:00 R 0016 B (0008) 0308518167800331
16:23:58:00 R 0016 B (0008) 0308518167800131
16:23:58:00 R 0016 B (0008) 0308518167800131
0000 Full Status 136/136
16:24:18:30 R 0016 D (0008) 0308518167800131
16:24:18:40 R 0016 D (0008) 0308518167800331
16:23:58:00 R 0016 F (0008) 0308518167800131
16:23:58:00 R 0016 F (0008) 0308518167800331
16:24:02:00 R 0016 D (0008) 0308518167800331
16:24:02:20 R 0016 D (0008) 0308518167800131
0000 LIV Status 135/135
16:23:58:00 R 0016 B (0008) 0308518167800131
16:23:58:00 R 0016 B (0008) 0308518167800331