Installation guide

AT-2971 Solaris Sparc
110
VCT can not be started if the link on the selected device is active. If you
should do this accidentally, you will get the following message:
"VCT test not started on device skge0! Link is
up!"
If you have tried to start VCT on a device not supporting it, you will get
the following message:
"VCT Error: VCT not supported on device skge0!"
This message will also appear, if you try to view the VCT status or to get
the VCT result on a device not supporting VCT.
You can retrieve the VCT result with the following command:
ndd /dev/skge0 vct_result
You will see output like the following example in the terminal window:
Old DSP result for skge0: Cable length: < 50m
New VCT result for skge0: Pair 1 [1-2] Length:
5m Status: Open in cable.
New VCT result for skge0: Pair 2 [3-6] Length:
5m Status: Open in cable.
New VCT result for skge0: Pair 3 [4-5] Length:
5m Status: Open in cable.
New VCT result for skge0: Pair 4 [7-8] Length:
5m Status: Open in cable.
The first line belongs to the DSP output. The VCT result lists the cable
pairs, the status of the corresponding cable pair, the distance to the fault
(length), and the status of the test.
"New" and "old" in the output above (and also in the output of the
vct_status command, see below) have the following meaning:
For VCT data, "new" means that the link is down and VCT has been
executed during this link down time. "Old" means that the link is or has
been up after the test has been executed, so the data is outdated and
may be wrong now.
For DSP data, "new" means that the link is up and DSP has calculated the
cable length automatically. "Old" means that the link is or has been
down after DSP has been run so the data is outdated and may be wrong
now.
The following states of a cable pair are possible after VCT has been
executed:
- Normal cable. : The cable pair is connected correctly.