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2960X - SFP show as unknown

Hello, 

I have 3 SFP modules inserted into a stack of thow 2960x, and only one SFP module is detected, the 2 others are show as unknown.

 

The "show version":

 

 

sh version
Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.0(2)EX5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Fri 21-Feb-14 05:54 by prod_rel_team

ROM: Bootstrap program is C2960X boot loader
BOOTLDR: C2960X Boot Loader (C2960X-HBOOT-M) Version 15.2(2r)E1, RELEASE SOFTWARE (fc1)

e-new uptime is 1 week, 19 hours, 49 minutes
System returned to ROM by power-on
System restarted at 15:26:16 CET Tue Jun 16 2015
System image file is "flash:/c2960x-universalk9-mz.150-2.EX5/c2960x-universalk9-mz.150-2.EX5.bin"


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C2960X-48TS-L (APM86XXX) processor (revision H0) with 524288K bytes of memory.
Processor board ID FCW1906B08A
Last reset from power-on
2 Virtual Ethernet interfaces
1 FastEthernet interface
104 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : BC:F1:F2:D6:86:00
Motherboard assembly number     : 73-15971-02
Power supply part number        : 341-0537-02
Motherboard serial number       : FOC19053039
Power supply serial number      : LIT18500ADV
Model revision number           : H0
Motherboard revision number     : B0
Model number                    : WS-C2960X-48TS-L
Daughterboard assembly number   : 73-14200-03
Daughterboard serial number     : FOC190577HJ
System serial number            : FCW1906B08A
Top Assembly Part Number        : 800-41468-01
Top Assembly Revision Number    : C0
Version ID                      : V03
CLEI Code Number                : CMMNF00ARB
Daughterboard revision number   : A0
Hardware Board Revision Number  : 0x12


Switch Ports Model              SW Version            SW Image
------ ----- -----              ----------            ----------
*    1 52    WS-C2960X-48TS-L   15.0(2)EX5            C2960X-UNIVERSALK9-M
     2 52    WS-C2960X-48TS-L   15.0(2)EX5            C2960X-UNIVERSALK9-M


Switch 02
---------
Switch Uptime                   : 1 week, 19 hours, 50 minutes
Base ethernet MAC Address       : BC:F1:F2:D6:88:00
Motherboard assembly number     : 73-15971-02
Power supply part number        : 341-0537-02
Motherboard serial number       : FOC1905302Y
Power supply serial number      : LIT185009EX
Model revision number           : H0
Motherboard revision number     : B0
Model number                    : WS-C2960X-48TS-L
Daughterboard assembly number   : 73-14200-03
Daughterboard serial number     : FOC190579PL
System serial number            : FCW1906B09J
Top assembly part number        : 800-41468-01
Top assembly revision number    : C0
Version ID                      : V03
CLEI Code Number                : CMMNF00ARB
Daughterboard revision number   : A0

Configuration register is 0xF

7 Replies 7

Mark Malone
Mentor
Mentor

whats are the sfps model no and can you post the show interface for each one

The sfp model is GLC-SX-MM.

 

The one that works:

GigabitEthernet2/0/49 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is bcf1.f2d6.8831 (bia bcf1.f2d6.8831)
  Description: B-Server
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseSX SFP
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:56, output 00:00:54, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 1387000 bits/sec, 836 packets/sec
  5 minute output rate 2434000 bits/sec, 902 packets/sec
     61934800 packets input, 24934311559 bytes, 0 no buffer
     Received 1728775 broadcasts (865174 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 865174 multicast, 0 pause input
     0 input packets with dribble condition detected
     60186758 packets output, 32428881698 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

The othes:

GigabitEthernet1/0/49 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is bcf1.f2d6.8631 (bia bcf1.f2d6.8631)
  Description: B-Server
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex, Auto-speed, link type is auto, media type is unknown
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 19:22:47, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     37033502 packets input, 13034567826 bytes, 0 no buffer
     Received 16265192 broadcasts (8503676 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 8503676 multicast, 0 pause input
     0 input packets with dribble condition detected
     19384354 packets output, 3025494569 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     20355 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

GigabitEthernet1/0/52 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is bcf1.f2d6.8634 (bia bcf1.f2d6.8634)
  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex, Auto-speed, link type is auto, media type is unknown
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

 

 

Your hard coded speed and duplex on the 1 that is working , while your auto negotiating on the ones that are not

 

Try hard code under interface each side and reseat

speed 1000

duplex full

No the speed and duplex are not hard code. Find the configuration of the interfaces below

 

Current configuration : 224 bytes
!
interface GigabitEthernet2/0/49
 description B-Server
 switchport mode trunk
 switchport nonegotiate
 spanning-tree link-type point-to-point
 channel-protocol lacp
 channel-group 1 mode active
 ip dhcp snooping trust
end

sh run int gig 1/0/49
Building configuration...

Current configuration : 224 bytes
!
interface GigabitEthernet1/0/49
 description B-Server
 switchport mode trunk
 switchport nonegotiate
 spanning-tree link-type point-to-point
 channel-protocol lacp
 channel-group 1 mode active
 ip dhcp snooping trust
end

sorry missed the auto there in first output its hard to read  , if you connect them to switch to switch do they come up to rule out the server side

It appears that if I connect the SFP in the second switch they are recognized, but not in the first switch off the stack.

Looking at the release notes you could be hitting this below , you could try reload if you know the fibre cable is good and no issues with far end servers and the fact the sfp is working fine in 1 switch

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/release_notes/OL30810.html

  • CSCul88801

1G or 10G in uplink ports of a Catalyst 2960-X stack may not come up after a reload or OIR of SFP/SFP+.

1G or 10G SFP appear as “unknown” in the output of the show int status command.

2960X# Show interfaces te1/0/1 transceiver properties
Diagnostic Monitoring is not implemented.
Name: Te1/0/1
Administrative Speed: 10000
Administrative Duplex: full
Administrative Auto-MDIX: on
Administrative Power Inline: N/A
Operational Speed: 10000
Operational Duplex: full
Operational Auto-MDIX: off
Media Type: Not Present<<<<
 

Workarounds:

Reload the switch.

Downgrade to Cisco IOS Release 15.0(2)EX3.

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