04-17-2013 08:34 AM
Hi all,
in one of our MDS 9124, a port status appears as "notConnected" and the rest are "up" or "sfpAbsent". We have been making some troubleshooting in order to get that port up and running but it has been impossible. We don't know the reason why it has this status and why it cannot be modified. Does anyone know what can we do?
Here is the output of the sh int bri command:
switch# sh int br
-------------------------------------------------------------------------------
Interface Vsan Admin Admin Status SFP Oper Oper Port
Mode Trunk Mode Speed Channel
Mode (Gbps)
-------------------------------------------------------------------------------
fc1/1 1 auto off up swl F 4 --
fc1/2 1 auto off up swl F 4 --
fc1/3 1 auto off up swl F 4 --
fc1/4 1 auto on up swl F 4 --
fc1/5 1 auto on up swl F 4 --
fc1/6 1 auto off up swl F 4 --
fc1/7 1 auto off up swl F 4 --
fc1/8 1 auto off up swl F 4 --
fc1/9 1 auto off up swl F 2 --
fc1/10 1 auto on up swl F 4 --
fc1/11 1 auto on up swl F 4 --
fc1/12 1 auto on up swl F 4 --
fc1/13 1 auto on up swl F 4 --
fc1/14 1 auto on up swl F 4 --
fc1/15 1 auto on notConnected swl -- --
fc1/16 1 auto on up swl F 4 --
fc1/17 1 auto on sfpAbsent -- -- --
fc1/18 1 auto on sfpAbsent -- -- --
fc1/19 1 auto on sfpAbsent -- -- --
fc1/20 1 auto on sfpAbsent -- -- --
fc1/21 1 auto on sfpAbsent -- -- --
fc1/22 1 auto on sfpAbsent -- -- --
fc1/23 1 auto on sfpAbsent -- -- --
fc1/24 1 auto on sfpAbsent -- -- --
and the output of the sh int fc1/15 command:
switch# sh interface fc1/15
fc1/15 is down (Link failure or not-connected)
Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)
Port WWN is 20:0f:00:0d:ec:ae:bc:c0
Admin port mode is auto, trunk mode is on
snmp link state traps are enabled
Port vsan is 1
Receive data field Size is 2112
Beacon is turned off
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
1 frames input, 188 bytes
0 discards, 0 errors
0 CRC, 0 unknown class
0 too long, 0 too short
1 frames output, 188 bytes
0 discards, 0 errors
0 input OLS, 0 LRR, 0 NOS, 0 loop inits
0 output OLS, 0 LRR, 0 NOS, 0 loop inits
switch#
In any other port the output is like this:
switch# sh interface fc1/16
fc1/16 is up
Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)
Port WWN is 20:10:00:0d:ec:ae:bc:c0
Admin port mode is auto, trunk mode is on
snmp link state traps are enabled
Port mode is F, FCID is 0x1f1400
Port vsan is 1
Speed is 4 Gbps
Rate mode is dedicated
Transmit B2B Credit is 20
Receive B2B Credit is 16
Receive data field Size is 2112
Beacon is turned off
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
15418 frames input, 627728 bytes
0 discards, 0 errors
0 CRC, 0 unknown class
0 too long, 0 too short
1130 frames output, 48616 bytes
0 discards, 0 errors
13 input OLS, 13 LRR, 2 NOS, 120 loop inits
17 output OLS, 4 LRR, 11 NOS, 25 loop inits
16 receive B2B credit remaining
20 transmit B2B credit remaining
20 low priority transmit B2B credit remaining
Interface last changed at Wed Apr 17 07:20:54 2013
switch#
04-17-2013 10:16 AM
Looks like you have inserted a SFP into port fc1/15, but you have not run a fc link from fc1/15 on MDS to another switch.
If you remove the SFP, "show int bri" would show status of port as "sfpAbsent", and "show interface fc1/15" will show up as "SFP not present"
04-17-2013 03:17 PM
Thanks for your reply. But sorry, I haven't understood, what would be the solution?
04-17-2013 03:40 PM
Do you have a SFP transceiver inserted in Port FC1/15 ?
Do you have any FC link inserted in SFP (Port FC1/15) and is it connected to another switch ?
If you do not have any FC link and you only have the SFP transceiver inserted, remove the SFP transceiver.
This will change the port status to sfpAbsent
To see the port status as 'up', you need to run a FC link from FC1/15 to another switch and configure the port.
If you have FC link, and it is connected to SFP, it is possible that you may have a faulty transceiver. Also it is possible that you have a faulty link. Replace transceiver/FC link and see if it helps.
HTH,
Vignesh
04-18-2013 08:20 AM
Thanks, we did all those checkings: we replaced the cable, the SFP, changed the ports, etc, etc but still with the same result.
I think the problem is related with the NPIV feature, that we need to enable, because these MDS switches are connected to Dell blades. I've seen this information through this link: http://i.dell.com/sites/content/shared-content/data-sheets/en/Documents/connecting-dell-blades-to-cisco-final-10-4-10.pdf
04-21-2013 07:17 AM
how's Dell blades connect to this 9124 ? Is there an internal switch in the blade chasis ?
04-22-2013 02:02 AM
Yes, there is an internal switch.
04-22-2013 06:58 AM
do you know what vendor/model ?
04-22-2013 07:12 AM
The chassis is a Dell M1000E, so the internal switch should be a Dell PowerConnect.
04-22-2013 07:17 AM
probably some sort of Brocade switch rebranded by Dell. Do you know if that switch is running in AG (access gateway) mode ?
switchBrocade:admin> ag --modeshow
Access Gateway mode is enabled.
@dynamoxxx
04-22-2013 07:21 AM
I think it's running in AG mode. What would change it change if running in that mode or not?
04-22-2013 07:23 AM
if it's running in AG mode, you have to make sure you have NPIV enabled on your MDS switch.
@dynamoxxx
04-22-2013 07:28 AM
OK, I understand... I'll tell the customer in order to doubled check it.
Thank you very much!
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