HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 198)

198 Troubleshooting
2. See the comment fields in Table 34 and follow the suggested actions.
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. Issue the
portErrShow
command.
Table 34 SwitchShow output and suggested action
Output Suggested action
Disabled
Issue the
portEnable
command.
Bypassed
Check the output from the
portLogShow
or
portLogDump
commands and
identify the link initialization stage where the initialization procedure went
wrong.
Loopback
Check the output from
portLogShow
/
PortLogDump
commands and
identify the link initialization stage where the initialization procedure went
wrong.
E_Port
If the opposite side is not another switch, the link has come up in a wrong
mode. Check the output from the
portLogShow
/
PortLogDump
commands
and identify the link initialization stage where the initialization procedure
went wrong.
F_Port
If the opposite side of the link is a fabric device, the link has come up in a
wrong mode. Check the output from
portLogShow
or
PortLogDump
commands.
G_Port
The port has not come up as an E_Port or F_Port. Check the output from
portLogShow
or
PortLogDump
commands and identify the link
initialization stage where the initialization procedure went wrong.
L_Port
If the opposite side is not a loop device, the link has come up in a wrong
mode. Check the output from
portLogShow
or
PortLogDump
commands
and identify the link initialization stage where the initialization procedure
went wrong.