Brocade Fabric OS Troubleshooting and Diagnostics Guide v6.2.0 (53-1001187-01, April 2009)

Fabric OS Troubleshooting and Diagnostics Guide 31
53-1001187-01
Device login issues
3
72 72 -- N8 No_Module
73 73 -- N8 No_Module
74 74 -- N8 No_Module
75 75 -- N8 No_Module
76 76 id N2 Online E-Port 10:00:00:05:1e:34:d0:05 "1_d1"
(upstream)(Trunk master)
77 77 id N4 Online F-Port 10:00:00:06:2b:0f:6c:1f
78 78 -- N8 No_Module
79 79 id N2 Online E-Port 10:00:00:05:1e:34:d0:05 "1_d1"
(Trunk master)
Pinpointing problems with device logins
1. Log in to the switch as admin.
2. Enter the switchShow command; then, check for correct logins.
3. Enter the portCfgShow command to see if the port is configured correctly.
In some cases, you may find that the port has been locked as an L_Port and the device
attached is a fabric point-to-point device such as a host or switch. This would be an incorrect
configuration for the device and therefore the device cannot log into the switch.
To correct this type of problem, remove the Lock L_Port configuration using the portCfgDefault
command.
switch:admin> portcfgshow
Ports of Slot 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-----------------+--+--+--+--+----+--+--+--+----+--+--+--+----+--+--+--
Speed AN AN AN AN AN AN AN AN AN AN AN AN AN AN AN AN
Trunk Port ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON
Long Distance .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
VC Link Init .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Locked L_Port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Locked G_Port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Disabled E_Port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
ISL R_RDY Mode .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
RSCN Suppressed .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
Persistent Disable.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..
NPIV capability ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON
where AN:AutoNegotiate, ..:OFF, ??:INVALID,
SN:Software controlled AutoNegotiation.
4. Enter the portErrShow command; then, check for errors that can cause login problems. A
steadily increasing number of errors can indicate a problem. Track errors by sampling the port
errors every five or ten minutes.
• The frames tx and rx are the number of frames being transmitted and received.
• The crc_err counter are frames with CRC errors. If this counter goes up then the physical
path should be inspected. Check the cables to and from the switch, patch panel, and other
devices. Check the SFP by swapping it with a well-known-working SFP.
• The crc_g_eof counter are frames with CRC errors and a good EOF. Once a frame is
detected to have a CRC error, the EOF is modified from that point on. So the first place that
the CRC is detected is the only place where the CRC with a good EOF is seen. This good
EOF error helps identify the source of the CRC error.