Dell Brocade G620 Brocade 8.0.1 Fabric OS Troubleshooting and Diagnostics Guid - Page 43

Device login issues on Fabric switch, port. Refer to

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Connectivity 0: 665k 7.0k 0 0 0 0 0 0 6 0 0 1 2 0 0 1: 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 4: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 5: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 6: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 7: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 8: 78 60 0 0 0 0 0 0 7 0 0 3 6 0 0 9: 12 4 0 0 0 0 0 0 3 0 0 1 2 0 0 10: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 11: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 12: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 13: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 14: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 15: 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 16: 665k 7.4k 0 0 0 0 0 0 6 0 0 1 2 0 0 (output truncated) 4. If you suspect a marginal link, isolate the areas by moving the suspected marginal port cable to a different port on the switch. Reseating of SFPs may also cure marginal port problems. If the problem stops or goes away, the switch port or the SFP is marginal (proceed to Step 6). If the problem does not stop or go away, refer to Step 7. 5. Run portLoopbackTest on the marginal port. You need an adapter to run the loopback test for the SFP. Otherwise, run the test on the marginal port using the loopback mode lb=5 . Use the different modes shown in Marginal links on page 41 to test the port. Refer to the Fabric OS Command Reference for additional information on this command. 6. Check the results of the loopback test and proceed as follows: ∙ If the loopback test failed, the port is bad. Replace the port blade or switch. ∙ If the loopback test did not fail, the SFP was bad. 7. Replace the SFP on the marginal port. 8. Perform the following steps to rule out cabling issues: a) Insert a new cable in the suspected marginal port. b) Enter the portErrShow command to determine if a problem still exists. ∙ If the portErrShow output displays a normal number of generated errors, the issue is solved. ∙ If the portErrShow output still displays a high number of generated errors, follow the troubleshooting procedures for the Host or Storage device in the following section, Device login issues on Fabric switch on page 43. Device login issues on Fabric switch A correct login is when the port type matches the device type that is plugged in. In the following example, it shows that the device connected to Port 1 is a fabric point-to-point device and it is correctly logged in an F_Port. switch:admin> switchshow switchName: brcd_G620 switchType: 145.1 switchState: Online switchMode: Native switchRole: Subordinate switchDomain: 1 switchId: fffc01 switchWwn: 10:00:00:05:1e:40:ff:c4 zoning: OFF switchBeacon: OFF Brocade Fabric OS Troubleshooting and Diagnostics Guide 53-1004126-01 43

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0:
665k 7.0k
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665k 7.4k
0
0
0
0
0
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6
0
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0
(output truncated)
4.
If you suspect a marginal link, isolate the areas by moving the suspected marginal port cable to a different port on the switch.
Reseating of SFPs may also cure marginal port problems.
If the problem stops or goes away, the switch port or the SFP is marginal (proceed to Step 6).
If the problem does not stop or go away, refer to Step 7.
5.
Run
portLoopbackTest
on the marginal port. You need an adapter to run the loopback test for the SFP. Otherwise, run the test
on the marginal port using the loopback mode
lb=5
. Use the different modes shown in
Marginal links
on page 41 to test the
port. Refer to the
Fabric OS Command Reference
for additional information on this command.
6.
Check the results of the loopback test and proceed as follows:
∙
If the loopback test failed, the port is bad. Replace the port blade or switch.
∙
If the loopback test did not fail, the SFP was bad.
7.
Replace the SFP on the marginal port.
8.
Perform the following steps to rule out cabling issues:
a)
Insert a new cable in the suspected marginal port.
b)
Enter the
portErrShow
command to determine if a problem still exists.
∙
If the
portErrShow
output displays a normal number of generated errors, the issue is solved.
∙
If the
portErrShow
output still displays a high number of generated errors, follow the troubleshooting procedures for
the Host or Storage device in the following section,
Device login issues on Fabric switch
on page 43.
Device login issues on Fabric switch
A correct login is when the port type matches the device type that is plugged in. In the following example, it shows that the device
connected to Port 1 is a fabric point-to-point device and it is correctly logged in an F_Port.
switch:admin> switchshow
switchName:
brcd_G620
switchType:
145.1
switchState:
Online
switchMode:
Native
switchRole:
Subordinate
switchDomain:
1
switchId:
fffc01
switchWwn:
10:00:00:05:1e:40:ff:c4
zoning:
OFF
switchBeacon:
OFF
Connectivity
Brocade Fabric OS Troubleshooting and Diagnostics Guide
53-1004126-01
43