topic Re: New setup A250 Fiber channel - Cisco MDS port showing not connected in ONTAP Hardware

New setup A250 Fiber channel - Cisco MDS port showing not connected

dirkdigs — Wed, 04 Jun 2025 09:56:07 GMT

Hello i have cabled everything up. Switch is Cisco MDS 9148. Netapp is A250 with each node having quad port FC adapter.

Using 16Gb OEM Cisco transceiver on Cisco side.

I have tried so many different things, but the ports are still showing not connected on the switch side.

Does anyone have any tricks up their sleeve that they might want to share with me? This is simple layer 1 connectivity issue but i feel like i am missing something. thanks, ,

patch cable is 5-meter OM4 OFNP

Re: New setup A250 Fiber channel - Cisco MDS port showing not connected

Ontapforrum — Thu, 20 Oct 2022 21:59:33 GMT

Some pointers:

FC link down
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Systems/FAS_Systems/FC_link_down

https://kb.netapp.com/Advice_and_Troubleshooting/Data_Protection_and_Security/MetroCluster/Cisco_9148S_switch_ports_go_down_and_console_became_unresponsive

https://community.netapp.com/t5/ONTAP-Hardware/LINK-NOT-CONNECTED/m-p/154933

Also, raise a ticket with NetApp.

Re: New setup A250 Fiber channel - Cisco MDS port showing not connected

AlexDawson — Fri, 21 Oct 2022 02:13:06 GMT

9148 or 9148S? 9148 is an 8Gb only switch. 9148S supports 16Gb.

show interface fcX/X transceiver details from the cisco side should show if there's light coming through.

Re: New setup A250 Fiber channel - Cisco MDS port showing not connected

dirkdigs — Fri, 21 Oct 2022 15:13:40 GMT

MDS 9148S 16G 48 FC

san-sw01# sh int fc1/19 transceiver details
fc1/19 sfp is present
Name is CISCO-FINISAR
Manufacturer's part number is FTLF8529P4BCV-C1
Revision is A
Serial number is FNS26280S6H
Cisco part number is 10-2666-01
Cisco pid is DS-SFP-FC16G-SW
FC Transmitter type is short wave laser w/o OFC (SN)
FC Transmitter supports short distance link length
Transmission medium is multimode laser with 62.5 um aperture (M6)
Supported speeds are - Min speed: 4000 Mb/s, Max speed: 16000 Mb/s
Nominal bit rate is 14000 Mb/s
Link length supported for 50/125um OM2 fiber is 35 m
Link length supported for 62.5/125um fiber is 15 m
Link length supported for 50/125um OM3 fiber is 100 m
Cisco extended id is unknown (0x0)

No tx fault, rx loss, no sync exists, diagnostic monitoring type is 0x68
SFP Diagnostics Information:
----------------------------------------------------------------------------
Alarms Warnings
High Low High Low
----------------------------------------------------------------------------
Temperature 30.27 C 75.00 C -5.00 C 70.00 C 0.00 C
Voltage 3.36 V 3.63 V 2.97 V 3.46 V 3.13 V
Current 6.52 mA 11.80 mA 4.00 mA 10.80 mA 5.00 mA
Tx Power -2.73 dBm 1.70 dBm -13.00 dBm -1.30 dBm -9.00 dBm
Rx Power N/A -- 3.00 dBm -15.90 dBm 0.00 dBm -11.90 dBm
Transmit Fault Count = 0
----------------------------------------------------------------------------
Note: ++ high-alarm; + high-warning; -- low-alarm; - low-warning

san-sw01#

Re: New setup A250 Fiber channel - Cisco MDS port showing not connected

FrankN — Mon, 24 Oct 2022 20:09:02 GMT

Check the type of SFP on the FC target adapters in the A250s. They should be shortwave transceivers to match the Cisco DS-SFP-FC16G-SW.