Configuration Guide User guide

498 FastIron Configuration Guide
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Virtual cable testing
Virtual cable testing command syntax
To diagnose a cable using TDR, enter commands such as the following at the Privileged EXEC level
of the CLI.
Brocade#phy cable-diag tdr 1
The above command diagnoses the cable attached to port 1.
When you issue the phy-cable-diag command, the command brings the port down for a second or
two, then immediately brings the port back up.
Syntax: phy cable-diag tdr <port>
Specify the port variable in one of the following formats:
• FWS, FCX, and ICX stackable switches – stack-unit/slotnum/portnum
• FSX 800 and FSX 1600 chassis devices – slotnum/portnum
• ICX devices – slotnum/portnum
• FESX compact switches – 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.
Brocade>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 88 shows the Local pair mapping to the T568A pin/pair and color
assignment from the TIA/EIA-568-B standard.
Figure 39 illustrates the T568A pin/pair assignment.
TABLE 88 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)