SFP-100BaseT ?

Unanswered Question
Jan 12th, 2008

Hi !

is there any SFP-Transeiver (CAT5) available which supports 10/100/1000 ?

Unfortunately the model we got - obviously is 1000-Base-T (fix) .

On Cisco website I could not find anything.

Could you please help me ?



I have this problem too.
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schimeha1977 Sat, 01/12/2008 - 04:02

Hi !

Thanks for you fast response.

But I can not find anything saying that a

1000BASE-T SFP supports 10/100/1000.

I can not even set it to 100

xxxx(config-if)#speed ?

nonegotiate Do not negotiate speed


best regards


Danilo Dy Sat, 01/12/2008 - 04:07


Your command output looks like from the "SFP module port" without 1000BASE-T SFP module or undetected.

Also, depends in you connection. See the "Configure SFP" part of the link that I post earlier, for your convenience here it is http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml#config

It says...

"You cannot configure speed on SFP module ports, but you can configure speed to not negotiate (nonegotiate) if connected to a device that does not support autonegotiation. However, when a 1000BASE-T SFP module is in the SFP module port, you can configure speed as 10, 100, or 1000 Mbps, or auto."

What is your switch model and IOS version? What is the port type and speed in the other end of the cable? Can you post "show ver" and "show inventory" output?



schimeha1977 Sat, 01/12/2008 - 05:32

Hi !

thanks for your support !!

Here is the output:

Gi4/6 disabled 1 full 1000 1000BaseSX

Gi4/7 disabled 1 full 1000 1000BaseSX

Gi4/8 disabled 1 full 1000 1000BaseSX

Gi4/9 disabled 1 full 1000 No Transceiver

Gi4/10 disabled 1 full 1000 No Transceiver

Gi4/11 disabled 1 full 1000 No Transceiver

Gi4/12 disabled 1 full 1000 No Transceiver

Gi4/13 disabled 1 full 1000 1000BaseT

Gi4/14 notconnect 195 full 1000 1000BaseT




NAME: "CISCO7604", DESCR: "Cisco Systems Cisco 7600 4-slot Chassis System"

PID: CISCO7604 , VID: V01, SN: FOX110102SY

NAME: "CLK-7600 1", DESCR: "OSR-7600 Clock FRU 1"

PID: CLK-7600 , VID: , SN: NWG10500188

NAME: "CLK-7600 2", DESCR: "OSR-7600 Clock FRU 2"

PID: CLK-7600 , VID: , SN: NWG10500188

NAME: "module 1", DESCR: "WS-SUP720-3B 2 ports Supervisor Engine 720 Rev. 5.4"

PID: WS-SUP720-3B , VID: V04, SN: SAL1141403A

NAME: "msfc sub-module of 1", DESCR: "WS-SUP720 MSFC3 Daughterboard Rev. 3.0"

PID: WS-SUP720 , VID: , SN: SAL11413ZKD

NAME: "switching engine sub-module of 1", DESCR: "WS-F6K-PFC3B Policy Feature Card 3 Rev. 2.3"

PID: WS-F6K-PFC3B , VID: V01, SN: SAL11413X0N

NAME: "module 3", DESCR: "Cisco 7600 Series SPA Interface Processor-400 Rev. 2.5"

PID: 7600-SIP-400 , VID: V06, SN: JAE1142069Q

NAME: "SPA subslot 3/0", DESCR: "2-port OC3/STM1 ATM Shared Port Adapter"

PID: SPA-2XOC3-ATM , VID: V04, SN: JAE1140Z85I

NAME: "subslot 3/0 transceiver 0", DESCR: "OC3 SR-1/STM1 I-1"

PID: 10-2020-01SFP , VID: D , SN: ECL114102KM

NAME: "subslot 3/0 transceiver 1", DESCR: "OC3 SR-1/STM1 I-1"

PID: 10-2020-01SFP , VID: D , SN: ECL114102JP

NAME: "module 4", DESCR: "WS-X6724-SFP CEF720 24 port 1000mb SFP Rev. 2.5"

PID: WS-X6724-SFP , VID: V02, SN: SAL1101CTXW

NAME: "switching engine sub-module of 4", DESCR: "WS-F6700-CFC Centralized Forwarding Card Rev. 4.0"

PID: WS-F6700-CFC , VID: V05, SN: SAL114247WG

NAME: "FAN-MOD-4HS 1", DESCR: "High Speed Fan Module for CISCO7604 1"

PID: FAN-MOD-4HS , VID: V01, SN: DCH11331256

NAME: "PS 1 PWR-2700-AC/4", DESCR: "2700W AC power supply for CISCO7604 1"

PID: PWR-2700-AC/4 , VID: V02, SN: APQ11360098



Danilo Dy Sat, 01/12/2008 - 06:43


I understand that you are using 7604 and the 1000BASE-T SFP Transceiver is plugged to WS-X6724-SFP.

1000BASE-T SFP Transceiver supports 10, 100, or 1000Mbps speed only on the Cisco Catalyst 2970, 3560, and 3750 Series Switches.

You can use autonegotiate if the device in the other end of the cable supports autonegotiate.



schimeha1977 Sat, 01/12/2008 - 06:58

Hi !

The other device does support Auto-Neg - but only 100Mbit :)

are you sure ? where did you find that info ?

that 10/100/1000 is only supported on 2970,3560...



Danilo Dy Sat, 01/12/2008 - 08:18


In the link that I provided to you. Please read the document (top to bottom), its very informative.




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