topic HI Madhu,thanks for your in Application Networking

FEX ports in SDP timeout/SFP Mismatch 6.2(2a) - Nexus 7009

raghvendra321 — Mon, 23 Mar 2015 10:26:44 GMT

Hi ,

kinldy help me to get rid of this problem , when i try to enable fex port in individual port or port channel it give me this error. I have rebooted and erase/renew the configuration but could not succeed. Appreciate your help and advise.

Regards,

Raghu

Hello Raghu, could you please

Madhukrishnan Gopinathan Nair — Mon, 23 Mar 2015 11:43:20 GMT

Hello Raghu,

could you please provide us the logs when you perform this. Also share a show int <>

Thanks,

Madhu

HI Madhukrishnan,Please find

raghvendra321 — Thu, 26 Mar 2015 11:24:34 GMT

HI Madhukrishnan,

Please find below details.

Ethernet3/11 is down (SDP timeout/SFP Mismatch)
admin state is up, Dedicated Interface
Hardware: 1000/10000 Ethernet, address: 5087.8942.6ec6 (bia 5087.8942.6ec6)
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is fex-fabric
10 Gb/s auto-duplex,, media type is 10G
Beacon is turned off
Auto-Negotiation is turned on
Input flow-control is off, output flow-control is off
Auto-mdix is turned on
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
EEE (efficient-ethernet) : n/a
Last link flapped 00:03:04
Last clearing of "show interface" counters never
0 interface resets
Load-Interval #1: 30 seconds
30 seconds input rate 2960 bits/sec, 0 packets/sec
30 seconds output rate 0 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
Rack-23_N7k-1# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_serie
s_home.html
Copyright (c) 2002-2013, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under
license. Certain components of this software are licensed under
the GNU General Public License (GPL) version 2.0 or the GNU
Lesser General Public License (LGPL) Version 2.1. A copy

==========================

Secondary:

Rack-24_N7k-2# sh interface ethernet 3/11
Ethernet3/11 is down (Link not connected)
admin state is up, Dedicated Interface
Hardware: 1000/10000 Ethernet, address: 0008.2f2d.3226 (bia 0008.2f2d.3226)
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is fex-fabric
10 Gb/s auto-duplex,, media type is 10G
Beacon is turned off
Auto-Negotiation is turned on
Input flow-control is off, output flow-control is off
Auto-mdix is turned on
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
EEE (efficient-ethernet) : n/a
Last link flapped 00:00:09
Last clearing of "show interface" counters never
0 interface resets

Hi Raghu, So you dual homing

Madhukrishnan Gopinathan Nair — Thu, 26 Mar 2015 16:42:44 GMT

Hi Raghu,

So you dual homing a fex? Is it coming up fine over second switch? I see it is link not connected?

About SDP timeout//Mismatch, it could be due to variable reason. Please try

1. Replace the SFP

2. Replace the fiber

3. Move the parent port to another from Eth3/11 (I would prefer you moving to another port group asic. If you can let me know which line card, i can help you)

3. If above did not help, change the port on FEX

4. If no help, try swapping connection between the N7k-1 and N7K-2

Hope this helps. Please do remeber to rate all helpful posts.

Thanks,

Madhu.

HI Madhu,thanks for your

raghvendra321 — Sat, 11 Apr 2015 09:19:42 GMT

HI Madhu,

thanks for your suggestion.

however i have figured it out. It was due to Dual home connectivity ove nexus 7k and Nexus 7k doesnot support dual home like 5k. i connected Fex parallely which mean 1 fex go to 1 7k. and issue got resolved.

Hi Raghu, Glad to hear issue

Madhukrishnan Gopinathan Nair — Sat, 11 Apr 2015 09:21:35 GMT

Hi Raghu,

Glad to hear issue resolved and thanks for sharing with us.

Regards,

Madhu

FYI, I ran into this same

Antonio Knox — Wed, 01 Jun 2016 12:41:29 GMT

FYI, I ran into this same issue and was able to resolve it by shutting down the port on the Nexus side, reseating the FET module and fiber connectors on both ends, then turning the port back up. It's not a sexy solution, but it did the trick for me, and may save someone else a headache or money.

Re: FEX ports in SDP timeout/SFP Mismatch 6.2(2a) - Nexus 7009

Orlando_Native — Tue, 22 Feb 2022 19:48:41 GMT

I understand how this works for fiber connections; but how about copper? I have a Nexus 6001T switch with 48 copper ports. They can be defined as mode "fex-fabric"; but how does one connect a FEX (eg; a 2248TP-E) to the switch in this case? I tried inserting a regular GLC-T SFP in the uplink port on the FEX; but it would appear the FEX doesn't like GLC-T transceivers. Would one insert the RJ45 patch cable into a "regular" FEX port instead?