Line Monitor Display, X.25 Example - Cabletron Systems Netlink FRX8000 User Manual

Information in this Display
Status Displays
Figure 19-6 shows an example of a display of RR and Data packets on an X.25 line,
and Figure 19-7 shows routing updates on a trunk.
09:23:05:16R DATA
09:23:05:27R DATA
09:23:05:27R RR
09:23:06:05T RR
09:23:06:18T DATA
09:23:07:13T DATA
Figure 19-6 Line Monitor Display, X.25 Example
On each line (see CCITT Recommendation X.25) in the above display:
The left most field shows the time, to hundredths of a second.
The next field displays
also displayed in reverse video.)
The next field identifies the packet type.
, , or appears between the packet type and the
Q M D
bit is turned on in the packet.
is the logical channel of a data session.
LCN
is the packet receive sequence number.
PR
is the packet send sequence number.
PS
is the length of the data in bytes.
LNG
The field to the right of the colon contains the data in a data packet. (Data
exceeding the screen width is displayed on the next line.)
Pending display of data packets, the line monitor stores them in a buffer. If the display
cannot keep up with the line's data traffic, the buffer will overflow, and some packets
will not be displayed. When this occurs, the message
appears. Display buffer overflow does not impair data integrity or interfere with traffic
on the line.
LC N 4072 PR 4 PS 4LNG 1024 :56686520756190G801
LC N 4072 PR 4 PS 5LNG 1024 :46686521255190G811
LC N 4071 PR 6 PS
LC N 4072 PR 6 PS
LC N 4072 PR 6 PS 6LNG 1024 :557586707555090G85
LC N 4071 PR 6 PS 7LNG 1024 :54389450758090G859
(Transmit) or (Receive). (Transmitted packets are
T R
[C],[D] from Main Menu
field if the ,
LCN Q
Line Monitor Buffer is Full
, or
M D
19-7