[j-nsp] Cisco SX SFP on Juniper EX2200

[Paulhamus, Jon]

Same here - 95%of SFP's that I user are Finisar which you can find quite cheap looking around - eBay.   Never have had any issues with them, other than the EX4500 with 1Gb SFP's - make sure that you have the 1Gb only model otherwise the switch thinks they are 4Gb fiber channel SFP's.  


Jon Paulhamus [CCNP, JNCIP-ENT, MCSE]
Assistant Director of Technology
BLaST IU#17


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________________________________________
From: Ben Dale [bdale at comlinx.com.au]
Sent: Thursday, December 13, 2012 6:13 PM
To: Chuck Anderson
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] Cisco SX SFP on Juniper EX2200

On 14/12/2012, at 12:29 AM, Chuck Anderson <cra at WPI.EDU> wrote:

> Regarding my previous comment about auto-negotiation, on the EX
> platform the correct command is:
>
> set/delete interfaces ge-x/y/z ether-options no-auto-negotiation
>
> On Thu, Dec 13, 2012 at 11:02:00AM +0100, Nicolas Hyvernat wrote:
>> On Thu, Dec 13, 2012 at 02:25:31AM +0000, Coy Hile wrote:
>>> Is Juniper one of those vendors who doesn't play happy with non-'blessed' SFPs on certain platforms?  I think I've heard stories about the MXes, but I don't have first-hand experience.
>>
>> MX: accept most non-'blessed' transceivers.
>> EX: not so much, right EEPROM coding required.
>

I've found the exact opposite to be true - EX and MX have taken everything I've thrown at them from a plethora of SFP/XFP suppliers, including C/DWDM modules.

The one exception is copper SFPs where I've found some modules that don't work, and some that maintain link up even without a patch lead attached.

My understanding from previous threads is that only the QFX3500 enforces JNPR optics.


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