Status Displays 19-7Figure 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.Figure 19-6 Line Monitor Display, X.25 Example[C],[D] from Main MenuInformation in this DisplayOn each line (see CCITT Recommendation X.25) in the above display:l The left most field shows the time, to hundredths of a second.l The next field displays T (Transmit) or R (Receive). (Transmitted packets arealso displayed in reverse video.)l The next field identifies the packet type.l Q, M, or D appears between the packet type and the LCN field if the Q, M, or Dbit is turned on in the packet.l LCN is the logical channel of a data session.l PR is the packet receive sequence number.l PS is the packet send sequence number.l LNG is the length of the data in bytes.l The field to the right of the colon contains the data in a data packet. (Dataexceeding the screen width is displayed on the next line.)Pending display of data packets, the line monitor stores them in a buffer. If the displaycannot keep up with the line's data traffic, the buffer will overflow, and some packetswill not be displayed. When this occurs, the message Line Monitor Buffer is Fullappears. Display buffer overflow does not impair data integrity or interfere with trafficon the line.09:23:05:16R DATA LC N 4072 PR 4 PS 4LNG 1024 :56686520756190G80109:23:05:27R DATA LC N 4072 PR 4 PS 5LNG 1024 :46686521255190G81109:23:05:27R RR LC N 4071 PR 6 PS09:23:06:05T RR LC N 4072 PR 6 PS09:23:06:18T DATA LC N 4072 PR 6 PS 6LNG 1024 :557586707555090G8509:23:07:13T DATA LC N 4071 PR 6 PS 7LNG 1024 :54389450758090G859
