190 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Virtual cable testing
6
Syntax: phy cable-diag tdr <port>
Specify the <port> variable in the following formats:
• PowerConnect B-Series FCX stackable switches – <stack-unit/slotnum/portnum>
Viewing the results of the cable analysis
To display the results of the cable analysis, enter a command such as the following at the Privileged
EXEC level of the CLI.
PowerConnect>show cable-diag tdr 1
Port Speed Local pair Pair Length Remote pair Pair status
--------- ----- ---------- ----------- ----------- -----------
01 1000M Pair A <50M Pair B Terminated
Pair B <50M Pair A Terminated
Pair C <50M Pair D Terminated
Pair D <50M Pair C Terminated
In the above output, Local pair indicates the assignment of wire pairs from left to right, where Pair
A is the left-most pair. Table 40 shows the Local pair mapping to the T568A pin/pair and color
assignment from the TIA/EIA-568-B standard.
Figure 24 illustrates the T568A pin/pair assignment.
FIGURE 24 T568A pin/pair assignment
Syntax: show cable-diag tdr <port>
TABLE 40 Local pair definition
Local pair T568A pair and color assignment
Pair A Pair 3 (green)
Pair B Pair 2 (orange)
Pair C Pair 1 (blue)
Pair D Pair 4 (brown)
RJ-45 JACK
T568A STANDARD
Pair 3
Green
Pair 1
Blue
Pair 4
Brown
Pair 2
Orange
PC
STRAIGHT-THRU
HUB
TX+ 1
TX- 2
RX+ 3
4
5
RX- 6
7
8
1 RX+
2 RX-
3 TX+
4
5
6 TX-
7
8
