HP StorageWorks Fabric OS 5.3.x administrator guide (5697-0244, November 2009)
Fabric OS 5.3.0 administrator guide 325
Correcting marginal links
A marginal link involves the connection between the switch and the edge device. Isolating the exact cause
of a marginal link involves analyzing and testing many of the components that make up the link (including
the switch port, switch SFP, cable, the edge device, and the edge device SFP).
To troubleshoot a marginal link:
1. Enter the portErrShow command.
2. Establish if there are a relatively high number of errors (such as CRC errors or ENC_OUT errors), or if
there are a steadily increasing number of errors to confirm a marginal link.
3. If you suspect a marginal link, isolate the areas by moving the suspected marginal port cable to a
different port on the switch. Re-seating of SFPs may also cure marginal port problems.
If the problem stop, the switch port or the SFP is marginal (proceed to step 4)
If the problem does not stop, refer to step 7.
4. Replace the SFP on the marginal port.
switch:admin> porterrshow
frames enc crc too too bad enc disc link loss loss frjt fbsy
tx rx in err shrt long eof out c3 fail sync sig
sig=====================================================================
0: 22 24 0 0 0 0 0 1.5m 0 7 3 0 0 0
1: 22 24 0 0 0 0 0 1.2m 0 7 3 0 0 0
2: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
4: 149m 99m 0 0 0 0 0 448 0 7 6 0 0 0
5: 149m 99m 0 0 0 0 0 395 0 7 6 0 0 0
6: 147m 99m 0 0 0 0 0 706 0 7 6 0 0 0
7: 150m 99m 0 0 0 0 0 160 0 7 5 0 0 0
8: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
9: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
10: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
11: 0 0 0 0 0 0 0 0 0 0 0 2 0 0
12: 0 0 0 0 0 0 0 0 0 0 0 2 0 0
13: 0 0 0 0 0 0 0 0 0 0 0 2 0 0
14: 0 0 0 0 0 0 0 0 0 0 0 2 0 0
15: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
32: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
33: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
34: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
35: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
36: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
37: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
38: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
39: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
40: 99m 146m 0 0 0 0 0 666 0 6 796 7 0 0
41: 99m 149m 0 0 0 0 0 15k 0 2 303 4 0 0
42: 99m 152m 0 0 0 0 0 665 0 2 221 5 0 0
43: 99m 147m 0 0 0 0 0 16k 0 2 144 4 0 0
44: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
45: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
46: 0 0 0 0 0 0 0 0 0 0 0 2 0 0
47: 0 0 0 0 0 0 0 0 0 0 0 0 0 0
switch:admin>