4500-x switch with 10Gbit SFP+ reporting 1000BaseCX

[bascheew]

We have a 4500x switch and SFP-H10GB-CU3M twinax cables.  When we plug them into the switch the ports are running at 1gbit.  Doing a "sh inv" gives us this output:

NAME: "TenGigabitEthernet1/1", DESCR: "1000BaseCX"

PID: SFP-H10GB-CU3M    , VID:      , SN: MOC12310540

Why would these 10Gb cables report 1000BaseCX?

[Steve Fuller]

Hi,

Which IOS version are you running on the switch? I've exactly the same setup here and show inventory reports the cables correctly in my case with IOS XE 03.03.02.

Can you post the output of the show idprom interface ten1/1 command as this gives more detail than the show inventory command?

Regards

[bascheew]

Here is the output:

4500-A#show idprom interface ten1/1

GBIC Serial EEPROM Contents:
Common Block:
Identifier        = SFP [0x3]
Extended Id       = GBIC is compliant with MOD_DEF 4 [0x4]
Connector         = Not available [0x21]
Transceiver
  Type             = Gbic 1000BaseCX
  Speed(FC,byte 10)= 100 MBytes/Sec 200 MBytes/Sec 400 MBytes/Sec  [0xD5]
  Media            = Twin Axial Pair (TW)  [0x80]
  Technology       = Electrical intra-enclosure (EL1)  Electrical inter-enclosure (EL2)  [0x81]
  Link Length      = Short Distance  [0x41]
  GE Comp Codes    = 1000BASE-CX  [0x4]
  SONET Comp Codes = Not available [0x0]
  10GE Comp Codes = Not available [0x1]
Encoding          = Unspecified  [0x0]
BR, Nominal       = 12000 Mbps (million bits per second)
Length(9u) in km  = GBIC does not support single mode fibre, or the length
                     must be determined from the transceiver technology.
Length(9u)        = GBIC does not support single mode fibre, or the length
                     must be determined from the transceiver technology.
Length(50u)       = GBIC does not support 50 micron multi-mode fibre, or the
                     length must be determined from the transceiver technology.
Length(62.5u)     = GBIC does not support 62.5 micron multi-mode fibre, or
                     the length must be determined from transceiver technology.
Length(Copper)    = 3 m
Vendor name       = CISCO-MOLEX INC
Vendor OUI        = 2362
Vendor Part No.   = 74752-9026
Vendor Part Rev.  = A
Wavelength        = Not available
CC_BASE           = 0xAA

Extended ID Fields
Options           = Not available [0x0]
BR, max           = Unspecified
BR, min           = Unspecified
Vendor Serial No. = MOC12310540
Date code         = 080804
Diag monitoring   = Not implemented
Rx pwr measuremnt = Optical Modulation Amplitude (OMA)
Address change    = Not required
CC_EXT            = 0x43

Vendor Specific ID Fields:
88030CAC  31 00 0C 4B D9 21 39 B6 DF 99 21 A2 94 BC AE CA   1..KY!9._.!"^T<.J
88030CBC  4D 07 BF 00 00 00 00 00 00 00 00 00 08 21 05 AC   M.?..........!.,

SEEPROM contents (hex) size 128:
0x0000  03 04 21 01 00 00 04 41 84 80 D5 00 78 00 00 00   ..!....A^D^@..x...
0x0010  00 00 03 00 43 49 53 43 4F 2D 4D 4F 4C 45 58 20   ....CISCO-MOLEX
0x0020  49 4E 43 20 00 00 09 3A 37 34 37 35 32 2D 39 30   INC ...:74752-90
0x0030  32 36 20 20 20 20 20 20 41 20 20 20 00 00 00 AA   26      A   ....
0x0040  00 00 00 00 4D 4F 43 31 32 33 31 30 35 34 30 20   ....MOC12310540
0x0050  20 20 20 20 30 38 30 38 30 34 00 00 00 00 00 43       080804.....C
0x0060  31 00 0C 4B D9 21 39 B6 DF 99 21 A2 94 BC AE CA   1..KY!9._^Y!".<.J
0x0070  4D 07 BF 00 00 00 00 00 00 00 00 00 08 21 05 AC   M.?..........!.,

[InayathUlla Sharieff]

Hi,

Please check the link:

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/44sg/configuration/guide/sw_int.html

Try to change the gig to tengig and let us know the result.

HTH

Regards

Inayath

*Plz rate all usefull posts.

[bascheew]

I'm not sure I understand your suggestion.  All the ports are already showing up as 10Gb however the SFP+ cables are showing as 1000BaseCX.

TenGigabitEthernet1/1, TenGigabitEthernet1/2, TenGigabitEthernet1/3, etc.....

I cannot change the speed of these ports as this isn't an option.

[Steve Fuller]

Hi,

That's correct. As you say there is no option to configure the speed on the Catalyst 4500X with the speed being determined automatically by the transceiver type that's plugged in.

Can you tell us the IOS version you're running? As I mentioned above I've exactly this setup with no issues.

Can you tell me if there's any identification on the SFP+ itself, specifically anything relating to a version? I know there are different versions of the active cables i.e., the 7M and 10M, and I've seen strange problems with these, but generally the passive cables have been very reliable.

One last question. What's the SFP+ cable connected to, and if it's another Cisco switch how does that device identify the cable?

Perhaps you could try plugging the other end of the SFP+ cable into the Catalyst 4500X and see if this is simply a transceiver fault on the end of the cable you currently have plugged into the switch.

Regards

[bascheew]

Here is the IOS version:

Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSAL-M), Version 03.03.01.SG RELEASE SOFTWARE

We have two of these switches and they are both reporting 1000baseCX and when we plug them into each other they negotiate at 1Gbit.

[Steve Fuller]

Hi,

I've done a bug search and haven't found anything related so all I can say at this stage is that these cables do work... at least with IOS 03.03.02.

ocs4516x-1#sh ver

Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.03.02.SG RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Tue 23-Oct-12 23:51 by prod_rel_team.

[..]

ocs4516x-1#sh idprom int te1/1

SFP+ Serial EEPROM Contents:

Common Block:

Identifier        = SFP+ [0x3]

Connector         = Copper Pigtail [0x21]

Transceiver

  Type             = SFP+ H10GB-CX1 Passive CU3M

Vendor name       = CISCO-MOLEX

Vendor OUI        = 2362

Vendor Part No.   = 74752-9520

Vendor Part Rev.  = 08

[..]

I hate saying upgrade unless root cause is really understood, but unless anyone else has any ideas that's my suggestion at this stage.

Regards

[bascheew]

I upgraded to 03.03.02.SG and they're still showing up as 1000baseCX! 

[Leo Laohoo]

And what do you get when you run the command "sh interface ten1/1"?

[bascheew]

4500-A#sh interface ten1/1

TenGigabitEthernet1/1 is down, line protocol is down (notconnect)

  Hardware is Ten Gigabit Ethernet Port, address is 2894.0faa.8560 (bia 2894.0faa.8560)

  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 set (10 sec)

  Full-duplex, Auto-speed, link type is auto, media type is 1000BaseCX

  input flow-control is off, output flow-control is off

  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: 0/2000/0/0 (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 input packets with dribble condition detected

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 3 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier

     0 output buffer failures, 0 output buffers swapped out

[Leo Laohoo · Accepted solution]

I think I got it.

Your first picture of the SFP.  Look at the part number.  See it ends with a "01"?  This means it's a V01.

And then go here.   You notice that there's a small "1" above the part number?  It says that V02 is supported.

[bascheew]

Sharp eyes Leolaohoo!  I have ordered new twinax cables and I will report back if this is the fix.

[Leo Laohoo]

I have ordered new twinax cables and I will report back if this is the fix.

Please specify it's V02 you've ordered.

[Leo Laohoo]

How did it go? Did it work?

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