Nexus Interface SFP

[farispv]

Dear Team. 
I would seek your kind advise and help to resolve below issue which am facing. 
Am, configuring 10G SFP connection on Nexus switch (5672UP), the interface shows the status SFP validation failed and interface not getting up. I have changed SFP and connected same SFP on another interface on same the Same SFP works fine with 10Gbps. 

I checked the interface status and switch default configuration, the interface transceiver capability shows 1000/10000 and SFP Media Type SFP-1000BASE-T and slot configuration shows global in switch 
slot 1
port 1-48 type ethernet

The subjected Interface previously connected SFP-1000BASE-T ethernet cables with speed 1000. I have changed interface speed. but the still not getting up. 
I have attached here the switch configuration and the subjected Interfaces status and some other active 10G interface details as well. 

I would be grateful on your help and advise to sort out this issue which am facing. 

Thank you. 

Config summary 
====Run Config===

slot 1
port 1-48 type ethernet

======================
cor-DC# show interface ethernet1/24
Ethernet1/24 is down (SFP validation failed)
Dedicated Interface

Hardware: 1000/10000 Ethernet, address: 00de.fb5e.fabf (bia 00de.fb5e.fabf)
Description: "Connected HP"
MTU 1500 bytes, BW 10000000 Kbit,, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is access
full-duplex, 10 Gb/s, media type is 1G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped 2week(s) 3day(s)
Last clearing of "show interface" counters 2w3d
76 interface resets
30 seconds input rate 0 bits/sec, 0 packets/sec
30 seconds output rate 0 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 0 bps, 0 pps; output rate 0 bps, 0 pps
RX
0 unicast packets 0 multicast packets 0 broadcast packets
0 input packets 0 bytes
0 jumbo packets 0 storm suppression bytes
0 runts 0 giants 0 CRC 0 no buffer
0 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
TX
0 unicast packets 0 multicast packets 0 broadcast packets
0 output packets 0 bytes
0 jumbo packets
0 output error 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
0 Tx pause
====================================

Eth1/21 -- connected 50 full 10G 10Gbase-SR
Eth1/22 -- connected 50 full 10G 10Gbase-SR
Eth1/23 -- sfpInvali 50 full 10G SFP-1000BAS
Eth1/24 -- sfpInvali 51 full 10G SFP-1000BAS
Eth1/25 "Connected to HP-E connected 51 full 10G 10Gbase-SR
Eth1/26 ****Connected to C connected 50 full 10G 10Gbase-SR
Eth1/27 -- connected 50 full 10G 10Gbase-SR

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

Ethernet1/23
transceiver is present
type is SFP-1000BASE-T
name is CISCO
part number is SP7041-TE
revision is A1
serial number is MTC210204CS
nominal bitrate is 1300 MBit/sec
Link length supported for copper is 100 m
cisco id is --
cisco extended id number is 4

DOM is not supported

Ethernet1/24
transceiver is present
type is SFP-1000BASE-T
name is CISCO
part number is SP7041-TE
revision is A1
serial number is MTC210204WX
nominal bitrate is 1300 MBit/sec
Link length supported for copper is 100 m
cisco id is --
cisco extended id number is 4

[Reza Sharifi]

Hi,

type is SFP-1000BASE-T

It appears that you have a 1gig SFP

Can you post the exact part number?

Also, is this a Cisco SFP or SFP+?

Some third-party vendor optics do not work with Cisco switches.

If it is 10Gig SFP the part number should look like this

SFP-10G-SR

See the compatibility matrix for the 5600 series.

https://tmgmatrix.cisco.com/?si=5672UP

HTH

[farispv]

many thanks for your reply 

Yes it’s same part number which you mentioned. When I inserted this 10G SFP The interface still shows type SFP-1000BASE-T. 

The same SFP works on other interface. 
is there anyway reset configuration on this specific interface to default without restarting switch ?

or any other work around 

[Reza Sharifi]

Hi,

Yes, you can reset the interface to default using this command:

default interface ethernet1/23

If this does not work, you may have to replace the SFP. Again if you are purchasing from a 3rd party company, make sure it is a Cisco-approved vendor.

HTH

[farispv]

Hello
I did the default interface command.

The interface went down and moved default vlan 1. but when i check interface status its shows according to below.

I removed SFP from interface, but still it shows SFP invalid instead of SFP Absent where no SFP installed the interface.


Eth1/23 -- sfpInvali 1 full 10G SFP-1000BAS
Eth1/24 -- sfpInvali 1 full 10G SFP-1000BAS


====


Ethernet1/23 is down (SFP validation failed)
Dedicated Interface

Hardware: 1000/10000 Ethernet, address: 00de.fb5e.fabe (bia 00de.fb5e.fabe)
MTU 1500 bytes, BW 10000000 Kbit,, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, medium is broadcast
Port mode is access
auto-duplex, 10 Gb/s, media type is 1G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped never
Last clearing of "show interface" counters 2w4d
0 interface resets
30 seconds input rate 0 bits/sec, 0 packets/sec
30 seconds output rate 0 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 0 bps, 0 pps; output rate 0 bps, 0 pps
RX
0 unicast packets 0 multicast packets 0 broadcast packets
0 input packets 0 bytes
0 jumbo packets 0 storm suppression bytes
0 runts 0 giants 0 CRC 0 no buffer
0 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
TX
0 unicast packets 0 multicast packets 0 broadcast packets
0 output packets 0 bytes
0 jumbo packets
0 output error 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
0 Tx pause

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

Ethernet1/23
Model: N5K-C5672UP-SUP
Type (SFP capable): SFP-1000BASE-T
Speed: 1000,10000
Duplex: full
Trunk encap. type: 802.1Q
Channel: yes
Broadcast suppression: no
Flowcontrol: rx-(off/on),tx-(off/on)
Rate mode: none
QOS scheduling: rx-(6q1t),tx-(1p6q0t)
CoS rewrite: no
ToS rewrite: no
SPAN: yes
UDLD: yes
MDIX: no
Link Debounce: yes
Link Debounce Time: yes
dot1Q-tunnel mode: yes
Pvlan Trunk capable: yes
TDR capable: no
FabricPath capable: yes
Port mode: Switched
FEX Fabric: yes

Ethernet1/24
Model: N5K-C5672UP-SUP
Type (SFP capable): SFP-1000BASE-T
Speed: 1000,10000
Duplex: full
Trunk encap. type: 802.1Q
Channel: yes
Broadcast suppression: no
Flowcontrol: rx-(off/on),tx-(off/on)
Rate mode: none
QOS scheduling: rx-(6q1t),tx-(1p6q0t)
CoS rewrite: no
ToS rewrite: no
SPAN: yes
UDLD: yes
MDIX: no
Link Debounce: yes
Link Debounce Time: yes
dot1Q-tunnel mode: yes
Pvlan Trunk capable: yes
TDR capable: no
FabricPath capable: yes
Port mode: Switched
FEX Fabric: yes

[marce1000]

 - Here's an example bug report https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuo46284 , I don't think it matches your particular problem but you want to have a look at the current software version running on the nexus and or use an advisory release if applicable , check if that can help.

 M.

[farispv]

Thanks for the reference article, let me go through