Correcting Link Failures; To Determine If The Negotiation Was Successfully Completed; To Check For A Loop Initialization Failure - HP AE370A - Brocade 4Gb SAN Switch 4/12 Administrator's Manual
Hp storageworks fabric os 5.2.x administrator guide (5697-0014, may 2009)
Hide thumbs
Also See for AE370A - Brocade 4Gb SAN Switch 4/12:
- Installation instructions (2 pages) ,
- Administrator's manual (576 pages) ,
- Hardware reference manual (256 pages)
Table of Contents
Correcting link failures
A link failure occurs when a server or storage is connected to a switch, but the link between the
server/storage and the switch does not come up. This prevents the server/storage from communicating
through the switch.
If the switchShow command or LEDs indicate that the link has not come up properly, use one or more of
the following procedures.
To determine if the negotiation was successfully completed
The port negotiates the link speed with the opposite side. The negotiation usually completes in 1-2 seconds;
however, sometimes the speed negotiation fails.
NOTE:
Skip this procedure if the port speed is set to a static speed through the portCfgSpeed
command.
To determine if the negotiation was successfully completed
1.
Enter the portCfgShow command to display the port speed settings of all the ports.
2.
Enter the switchShow command to determine if the port has module light.
3.
Determine whether or not the port at 1Gig/sec completes by entering the portCfgSpeed command.
Then change the port speed to 2 Gig/sec. This should correct the negotiation by setting to one speed.
4.
Enter the portLogShow or portLogDump command.
5.
Check the events area of the output. The first example is 1 Gbit/sec and the second example is
2 Gbit/sec:
14:38:51.976
14:39:39.227
• sn indicates a speed negotiation.
• NC indicates negotiation complete.
• 01 or 02 indicate the speed that has been negotiated.
• If these fields do not appear, proceed to the
6.
Correct the negotiation by entering the portCfgSpeed [slotnumber/]portnumber,
speed_level command if the fields in
To check for a loop initialization failure
1.
Verify the port is an L_Port.
a. Enter the switchShow command.
b. Check the comment field of the output to verify that the switch port indicates an L_Port. If a loop
device is connected to the switch, the switch port must be initialized as an L_Port.
c. Check to ensure that the port state is online; otherwise, check for link failures.
2.
Verify the loop initialization if the port is not an L_port.
a. Enter the portLogShow or portLogDump command.
b. Check argument number four for the LISA frame (0x1 1050100).
switch:admin> portlogdumpport 4
time
-------------------------------------------------
11:40:02.078
Received LISA frame
The LISA frame indicates that the loop initialization is complete.
SPEE sn
NC
SPEE
sn
step 5
task
event
PORT
Rx3
23
00000001,00000000,00000001
NC
00000002,00000000,00000001
step
6.
do not appear.
port cmd
args
20
22000000,00000000,ffffffff,11050100
Fabric OS 5.2.x administrator guide 297
- Quick Links:
- Configuring the Ethernet Interface
Hide quick links:
Table of Contents
Troubleshooting
