10-16-2014 06:21 AM
Hi Ihave a Nexus 5548UP running 7.0(1) and I am having an issue getting a 1Gb FC link to come up. I have a Quantum Library and it currently connect to a Q Logic FC Switch without issues. I want to move this SAN to a nexus and testing the 1Gb FC link on a port in the Nexus that is configured as FC and using the transiever model DS-SFP-FC4G-SW. The port does not come up even though the transiever is recognised. Your help would be appreciated.
The show int capabilities and show int transciever are below;
nmc-st-nxs2# sh int fc1/28 capabilities
fc1/28
fc1/28
Min Speed is 1 Gbps
Max Speed is 8 Gbps
FC-PH Version (high, low) (2,1)
Receive data field size (max/min) (2112/2112) bytes
Transmit data field size (max/min) (2112/256) bytes
Classes of Service supported are Class 3, Class F
Class 3 sequential delivery supported
Hold time (max/min) (10000/1) micro sec
BB state change notification not supported
Rate Mode change not supported
Rate Mode Capabilities Dedicated
Receive BB Credit modification supported yes
FX mode Receive BB Credit (min/max/default) (1/240/16)
ISL mode Receive BB Credit (min/max/default) (1/240/16)
Performance buffer modification supported no
FX mode Performance buffers (min/max/default) --
ISL mode Performance buffers (min/max/default) --
Out of Service capable yes
Beacon mode configurable no
nmc-st-nxs2#
nmc-st-nxs2# sh int fc1/28 transceiver
fc1/28 sfp is present
Name is CISCO-FINISAR
Manufacturer's part number is FTLF8524P2BNL-C2
Revision is D
Serial number is FNS14351AM6
Cisco part number is
FC Transmitter type is short wave laser w/o OFC (SN)
FC Transmitter supports intermediate distance link length
Transmission medium is multimode laser with 62.5 um aperture (M6)
Supported speeds are - Min speed: 1000 Mb/s, Max speed: 4000 Mb/s
Nominal bit rate is 4300 Mb/s
Link length supported for 50/125mm fiber is 150 m
Link length supported for 62.5/125mm fiber is 70 m
Cisco extended id is unknown (0x0)
No tx fault, rx loss, no sync exists, diagnostic monitoring type is 0x68
Invalid calibration
nmc-st-nxs2#
Regards,
Dom.
10-16-2014 08:15 AM
Show interface counters ?
Any entries in the error / syslog ?
Is the port F-Port ? or is the peer expecting a loop port ?
Maybe set the port speed fix to 1G
10-17-2014 02:06 AM
I have tried all port modes and speeds.
I have not tried to set the speed to 1G beforehand, only during and this made no difference.
Counters:
fc1/28
1 minute input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
1 minute output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
171 frames input, 12084 bytes
171 frames input, 12084 bytes
0 class-2 frames, 0 bytes
171 class-3 frames, 12084 bytes
0 class-f frames, 0 bytes
0 discards, 0 errors, 0 CRC
0 unknown class, 0 too long, 0 too short
171 frames output, 10192 bytes
0 class-2 frames, 0 bytes
171 class-3 frames, 10192 bytes
0 class-f frames, 0 bytes
0 discards, 0 errors
0 input OLS, 0 LRR, 0 NOS, 0 loop inits
178 output OLS, 10 LRR, 97 NOS, 0 loop inits
10 link failures, 22 sync losses, 0 signal losses
0 transmit B2B credit transitions from zero
0 receive B2B credit transitions from zero
16 receive B2B credit remaining
0 transmit B2B credit remaining
0 low priority transmit B2B credit remaining
10-17-2014 04:22 AM
Can you please check what the port type is on the Qlogic FC switch, where everything is running ok.
As has been discussed in another thread, some tape library require a loop port, NL-Port; and the Nexus 55xx doesn't this type of FC port.
The fix is to set the tape library port to N (not NL).
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide