WS-C3750X-24S-S ports

[berkous1]

A quick confirmation on the 24 SFP ports , can we configure them at 10/100/1000 speed even if i put a fiber SFP?

Thanks for your confirmation it will be useful for me to confirm if i keep that old HP Procurve shit during transition ....

Thanks in advance !!

[Bilal Nawaz]

Hello, I have the option available to me on an SFP plugged interface

I also have a WS-C3750X-24S

Bilal-3750X-121(config-if)#speed ?
10 Force 10 Mbps operation
100 Force 100 Mbps operation
1000 Force 1000 Mbps operation
auto Enable AUTO speed configuration

Bilal-3750X-121(config)#do show ver
Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(58)SE2, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 21-Jul-11 01:23 by prod_rel_team

ROM: Bootstrap program is C3750E boot loader
BOOTLDR: C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(58r)SE, RELEASE SOFTWARE (fc1)

Bilal-3750X-121 uptime is 12 weeks, 3 days, 3 hours, 21 minutes
System returned to ROM by power-on
System restarted at 11:12:51 GMT Sat Feb 2 2013
System image file is "flash:/c3750e-universalk9-mz.122-58.SE2/c3750e-universalk9-mz.122-58.SE2.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.

License Level: ipservices
License Type: Permanent
Next reload license Level: ipservices

cisco WS-C3750X-24S (PowerPC405) processor (revision A0) with 524288K bytes of memory.
Processor board ID XXXXXXXXXX
Last reset from power-on
38 Virtual Ethernet interfaces
1 FastEthernet interface
56 Gigabit Ethernet interfaces
4 Ten Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:XX:XX:XX:XX:XX
Motherboard assembly number : 73-13061-04
Motherboard serial number : XXXXXXXXXXXX
Model revision number : A0
Motherboard revision number : A0
Model number : WS-C3750X-24S-E
Daughterboard assembly number : XXXXXXXXXX
Daughterboard serial number : XXXXXXXXXXX
System serial number : XXXXXXXXX
Top Assembly Part Number : XXXXXXXX
Top Assembly Revision Number : B0
Version ID : V03
CLEI Code Number : XXXXXXXXXX
Hardware Board Revision Number : 0x04


Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 30 WS-C3750X-24S 12.2(58)SE2 C3750E-UNIVERSALK9-M
2 30 WS-C3750X-24S 12.2(58)SE2 C3750E-UNIVERSALK9-M

Bilal-3750X-121#show idprom interface gi1/0/1 detail

General SFP Information
-----------------------------------------------
Identifier : 0x03
Connector : 0x00
Transceiver : 0x00 0x00 0x00 0x08 0x00 0x00 0x00 0x00
Encoding : 0x01
BR_Nominal : 0x0D
Vendor Name : CISCO-AVAGO
Vendor Part Number : XXXXXXXXXX
Vendor Revision : 0x42 0x32 0x20 0x20
Vendor Serial Number : XXXXXXXXXXX

On Cisco's site:
Cisco Catalyst 3750-X and 3560-X Series primary features• 24 and 48 10/100/1000 PoE+, non-PoE models, and 12 and 24 GE SFP port models

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/data_sheet_c78-584733.html

Hope this helps

Please rate useful posts and remember to mark any solved questions as answered. Thank you.

[berkous1]

Thanks for this answer that will ease my migration. appreciated !!

[Giuseppe Larosa · Accepted solution]

Hello Bilal,

the speed command might be avaialable on the CLI, but it should be effective ONLY if you have a GLC-T on the port.

Is this your case?

I would be really surprised that the speed command is supported on a fiber based SFP, if you look at the SFP that are available none of them is capable of multi speed operation, there are some 100 Mbps SFPs, then there are some 1000 Mbps SFPs all of them fiber based

see the Gbps compatibility matrix

http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html

http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml#model1

the 100Mbps SFP compatibility matrix:

http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL632702.html

Try  to avoid to provide misleading information if possible

Hope to help

Giuseppe

[Bilal Nawaz]

Hello Giuseppe, apologies for any incorrect information that has been given. I use a copper connection using the glc-t sfp to a server that can only run at 100. So I was able to change this option(hard code in the config), and it is available to us.

Maybe the SFP type is definitely worth considering if there are certain requirements.
Your links provided are very relevant, and will rate accordingly.
Thank you.

Sent from Cisco Technical Support iPhone App

[berkous1]

Thanks Guiseppe this is what i needed as  confirmation on the fact it's not possible with SFP fibers to have various speed only gig.

So i will need to keep alive those old HP switches who can strangely do this ...

Yeah Bilal thanks for your answer even if you were not totally wrong on the topic ....

Cheers guy and thanks again

[Reza Sharifi]

As Giuseppe also noted, fiber ports have fixed speed.  If your SFP is Gig, then the speed will be Gig and not 100/1000.

If your SFP is 100, then the speed is 100 and not 100/1000 or 10/100/1000. 

HTH