Allied Telesyn SFP in a Cisco switch ?

It -probably- will not work.

Although the functionality of SFPs is industry standard, each one has a serial number in it, and if I recall correctly Cisco 3750's check the serial numbers and only allow Cisco equipment.

Possibly the 3750 does not do this check for SFPs: the discussions I have seen were more about GBICs... which are also supposed to be industry standard [but aren't really].

The datasheet at the link you provided indicated that the SFP would work with "Allied Telesyn compatible equipment".

On 10.03.2006 16:09 Walter Roberson wrote

According to a recent discussion on snipped-for-privacy@puck.nether.net it should be possible to use 3rd party equipment. However read

Use

service unsupported-transciever no errdisable detect cause gbic-invalid

to allow 3rd party SFPs to work.

Thank you both. We decided to buy the Cisco SFP (82% more expensive than the Allied Telesyn). Mostly because this SFP will be installed at the other end of the connection in a switch that doesn't belong to us and the people there might get nervous using undocumented commands, etc...

The only relevant thing I found in that page was:

"Error Message C4K_CHASSIS-4-UNSUPPORTEDTRANSCEIVER: Unsupported transceiver found in [char]

Explanation The transceiver was identified as an unsupported non-Cisco transceiver."

Did you mean something else ?

On another page I found the description of the undocumented command "service unsupported-transceiver":

Enables the use of third-party SFP or GBIC modules on Cisco switches but note the warning below.

Example output:

Switch(config)#service unsupported-transceiver Warning: When Cisco determines that a fault or defect can be traced to the use of third-party transceivers installed by a customer or reseller, then, at Cisco's discretion, Cisco may withhold support under warranty or a Cisco support program. In the course of providing support for a Cisco networking product Cisco may require that the end user install Cisco transceivers if Cisco determines that removing third-party parts will assist Cisco in diagnosing the cause of a support issue.

You mean to use one OR the other command, right ?

I have also seen this comment:

http://72.14.207.104/search?q=cache:hiujBlDyTb0J:puck.nether.net/pipermail/cisco-nsp/2004-January/008021.html+%22no+errdisable+detect+cause+gbic-invalid%22&hl=pt-PT&gl=pt&ct=clnk&cd=3 : Several people have reported success with non Cisco SFPs purchased : from Zycko.

I don't know if this is due to Zycko doing something to the SFPs or simply including in the assembling instructions the command(s) above.

• Hi friends there is a good news. Recently i was working in industrial project & i found that Allied Telesys switches accepts dlink & netgear sfp modules & works very good. Dlink & netgear sfp modules are 50% cost than Allied Telesys sfp. So it is helpfull *