Hey Reza,

ER is NOT supported.  I'm the same boat.  I've asked the local SE and asked for a "product improvement" (is this the correct term).  I think the logic was to use the 3750E to push ER.

Thanks Leolaohoo,

you understood my question correct: I am talking about SFP+ ER on 3750X and not XENPACK ....

The answer I have from Cisco ist that SFP+ 10GB ER will be supported starting from Feb/March 2011.

I asked the forum because may be someone else has other informations....

I really do not understand why ER are not supported .... this is a big limitation of the product.

thanks for your feedback.

gilberto

I agree too this is a big limitation in the product to.

We are just upgrading 3570  swiches to 3750X and hit this problem

XEN Packs -ER work on the 3750

SFP-10G-ER DONT work in the 3750X

I Opend a TAC case and was told

Found the roadmap for SFP-10G-ER which stated that SFP-10G-ER would be compatible with 3750-X with the IOS release 15.0(2)SE  which would be released in 03/2012.

I wish this could be sooner.

I wish Cisco would not say that the 3570X is a replacement for the 3750 when its not with this critical feature missing

I agree.  Not happy with the delay.  I thought that the 15.0(1) would incorporate the -ER support but, alas, I was disappointed. 

Update:

Could not wait till march next year.

We send our GBIC back to SMART OPTICS and they reporgramed them to report -LR  when queried instead of -ER

Hey presto they now work in the 3750X switch

Switch#sh int tenGigabitEthernet 1/1/1

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

  Hardware is Ten Gigabit Ethernet, address is e342.48d8.3ab9

  MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 10Gb/s, link type is auto, media type is SFP-10GBase-LR

Hey Charles,

Can you PM me?  I need to talk to you about how you go about getting the SFP+ reprogramed. 

Spoke to our Cisco SE and he mentioned end of 2012 (tentative). 

A bit stupid really.  The only 3750 model currently that will support 10 Gbps ER is the 3750E.

Hello leolaohoo,

thanks for your answer... I think the same. You buy a switch that costs thousands of dollars in replacement of an EoL equipment, and it's not fully compatible...

Did you finally test the option of reprogram a -ER to report -LR instead? Could be a temporary solution while Cisco supports officially the -ER. I have no money to buy a new 3750E + X2-10GB-ER...

Best regards,
Iñaki

One of the regular poster here did some trick to his SFP+.  He sent an ER back to the original manufacturer and asked the manufacturer to reprogram the flash.  So now the -ER reports back as a -LR.

The code is committed to the 15.0(2)SE release which is tentatively targeted for early August 2012. 

-Matt

Hi Matt,

I'm looking forward to this.  I've been waiting for this support since December 2010.