12-Ports SFP

Hi Friends,

I have one part no. from Cisco i.e. WS _X4612__SFP__E  which shows "E-Series 12-Port GE (SFP)"

can anyone pls advice does this comes as a Line card slot to put SFP or this part no includes Line Card slot + SPFs,

Reason to ask is either I have to buy the separate SFPs or does this Line card itself comes with SFP.

thanks in advance for your prompt reply.
dxbdxb2009Asked:
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pjwallisCommented:
Hi,

A search on http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/hardware/configuration/notes/OL_25315.html

confirms what I thought. This line card has the SFP sockets for the SFP transceivers.

http://www.provantage.com/cisco-systems-ws-x4612-sfp-e~7CSCO38C.htm  says it has expansion slots for the SFP.

A Call to Cisco would confirm this and allow you to check out the SFP (mini GBIC) tranceivers that are available.

It would be good to confirm this with Cisco as the mini-GBIC aren't cheap.

pjwallis
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dxbdxb2009Author Commented:
thanks for your reply..

the price i can see something around $3435 for this part no. ...

do you think we can get this line card with $3435 including 12 SFPs.

pls advice ....
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Craig BeckCommented:
Cisco line cards NEVER come WITH SFPs - they are a separate item.
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pjwallisCommented:
I believe I have answered your question which follows.

"can anyone pls advice does this comes as a Line card slot to put SFP or this part no includes Line Card slot + SPFs,

Reason to ask is either I have to buy the separate SFPs or does this Line card itself comes with SFP."


It comes with slots for the SFP.

You will have to chase up the supply and price from a IT supplier, confirming the presence or absence of the SFP for that specific quote to meet you specific needs.

As the SFP are separately available they won't be included unless the actual sale indicated they are added in to your specific sale. The price you quoted doesn't tell me what is included. That price could have come for any of over a thousand different suppliers.

IT isn't easy and that is why this site is such a great source of information, but at the end of the day each of us has to do the hard work of identifying the actual hardware and the accessories with a price that actually includes each item we require in it. Sometimes I don't even know enough about it to know what I want. This is the normal work of IT experts. Identify what we don't know and learn about it as fast as possible.

I use the term mini-GBIC and it is the same as SFP. This makes it harder to communicate but can I encourage you to identify with the supplier what they are actually quoting on and what is missing. If the supplier is difficult to understand I stop and try to clarify the words they use to describe an item and what that means. It sometimes takes me hours to finally sort out the terminology and specific way a technology is supplied only to find out another supplier does it differently. Yes, I spend the time learning and adjusting so I can make great purchases without mistakes.

Another question is what sort of SFP's do you need? What speed? What sort of physical connections to the fibre are needed? What type of fibre is it and will this SFP match it.
There is 50 micron and 62.5 micron fibre, also referred to as om1 om2 and om3

Then there's the question of the other end of the fibre run. I have found the hard way that in some circumstances you need a matching SFP at the other end for the link to run.

Sigh, the normal work of IT specialists is being game and confident enough to wade into any previously unknown field and become comfortable and fluent in all aspects of the technology as quickly as possible.

If you want to post a copy of the quote without naming the supplier I'll be happy to have a look at it.

Let me know how it is going.
pjwallis
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Craig BeckCommented:
I think if you say mini GBIC to a supplier you'll get the wrong thing half the time. Be specific. If you need a SFP, ask for just that.

Also, your transceiver must be the same type at both ends - every time, not just sometimes.

As a rule of thumb don't try to get SFPs with the same type of connector as the fibre. You will ONLY find SFPs with LC connectors, so you'll need to find a patch cable to match, not an SFP.
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dxbdxb2009Author Commented:
Thanks a lot 'pjwallis' for your helpful reply,

I really appreciate your support & help.

You will have to chase up the supply and price from a IT supplier..... = Yes...but i want to be make sure myself before going to the supplier & my management,= thus need you experts advice...
Another question is what sort of SFP's do you need? = which supports Single Mode Fiber Cable
 What speed? = 1 Gigs

 What sort of physical connections to the fibre are needed? = Single Mode (12 core) Fiber cable
 What type of fibre is it and will this SFP match it = Enclosing a sheet you to advice..

Then there's the question of the other end of the fibre run. I have found the hard way that in some circumstances you need a matching SFP at the other end for the link to run..... = find the below my comments on this:
In Server/MDF room :
a) Cisco 4503 Core Switch = 2 nos. with 2 nos of Fiber Cards (12 slots with each Card) ON_FIBER
b) Cisco 2906 Edge switches = 11 nos (No of IDFs are 11 at all should interconnect with Fiber with Core switch) ON_FIBER
c) Fortigate Firewall 100D = 2 nos ON_COPPER
d) NetApp - FAS2240-2 = 1 nos ON_FIBER
e) SYMC BACKUP EXEC 3600 = 1 nos ON_COPPER
d) HP Servers (HP DL380Gen 8) = 2 Nos ON_FIBER

If you want to post a copy of the quote without naming the supplier I'll be happy to have a look at it = I am enclosing it here with for your ready reference & I would really appreciate you if you can have a look on it & advice :
1. How many SPFs I really need?
2. Does My BOQ seems good or I really need to add something more to have the required connectivity with all my devices mentioned here...

Looking for your kind support & help ....

many thanks in advance...
IT-Infrastructure---Copy.pdf
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Craig BeckCommented:
You'll need the following SFP:

GLC-LH-SMD=

They're in the PDF you attached so I'd assume they'll be included in the quote.  As I said though, they don't come as part of the line-card, they're a separate orderable item.
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pjwallisCommented:
Thanks for posting the list of gear. Is this already installed gear and you are adding to it, or all the gear you are ordering?

If it is about to be installed then the supplier may be considering redundancy around your hosts and core and should have taken into account the following when making up the gear list.

GLC-LH-SMD is one of many different SFP (Small Form-factor Pluggable) or mini-GBIC as used by Cisco to describe their own hardware. SFP's come with a variety of connections not just LC.

Compatibility list for different SFP's
http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html

What are they used for?
 Is this just to patch to gear in your racks with LC fibre patch leads?

If you are incorporating a fibre link to another place over 220m you may need a different sort of SFP? How far away is your longest fibre run to an edge switch and what sort of fiber are you using?

If it is all patching around the local rack then the GLC-LH-SMD should be fine after you check the compatibility matrix above.

pjwallis
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Craig BeckCommented:
Ok allow me to be more specific:

If it's an SFP AND it's fibre - it's LC.  If it's copper, it's RJ45.  There are NO other types of SFP which are connectorized for Gigabit applications.

Cisco actually describe the SFP as, erm, an SFP.

If you're using a GLC-LH-SMD over a distance greater than 220m there's absolutely NO problem whatsoever.  You can use the GLC-LH-SMD transceiver to transmit over distances up-to 10Km over SMF and 550m over MMF (using a mode-conditioning patch cable).

You'll find clarifications here...

http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet0900aecd8033f885.html
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pjwallisCommented:
Hi Craigbeck,

Can I encourage you to actually read the document you gave the link to.

You will see 7 different SFP's listed. SFP is "Small Form-factor Pluggable" and is a generic term for the different mini-GBIC that are available. Yes there are 7 different mini-Gbic and now you need to see the following Cisco document and you will see SFP and mini-GBIC branded by Cisco on the same Cisco SFP or mini-GBIC.

http://www.cisco.com/en/US/docs/interfaces_modules/csbna/mgb/quick_start/guide/Optical_Module_QSG_en-US.pdf

I understand SFP and mini-GBIC is the same generic term. Some manufacturers favour one or the other to describe their gear. Some manufacturers try to claim the term SFP makes mini-GBIC obsolete, but Cisco are obviously not buying into that political snobbery as they use both terms interchangeably so their devices can be readily identified.

Thanks heaps for your comments.
pjwallis
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pjwallisCommented:
Hi DXDBXB2009,

How's it going?

pjwallis
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Craig BeckCommented:
Hi pjwallis,

Firstly, I posted the following:
If it's an SFP AND it's fibre - it's LC.  If it's copper, it's RJ45.  There are NO other types of SFP which are connectorized for Gigabit applications.
So, here I've said the key word - connectorized.

Then:
Connectors and Cabling
Connectors include the following:
• Dual LC/PC connector (1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX and 1000BASE-ZX)
• Single LC/PC connector (1000BASE-BX-D and 1000BASE-BX-U)
• RJ-45 connector (1000BASE-T)
Taken from the link I posted, that excerpt clearly explains the types of connector available for SFPs.  As you will see there are only two, as I have already said - LC or RJ45.  Whether there are seven different types of SFP is irrelevant as they will ALWAYS either have an LC connector or a RJ45 connector.

With regard to calling the transceiver a SFP or a mini-GBIC, you'll find that the industry-standard and also Cisco specific term for a SFP is indeed just 'SFP' (Small Form-factor Pluggable).  The term GBIC is for a completely different and now legacy form factor.  If you ask for a mini-GBIC you may well end up with a SFP, but you might also end up with a GBIC, so in my experience it is always favourable to ask for a SFP when you want a SFP to ensure the wrong part isn't ordered.

The last thing I would want to do is tell the OP to spend a shed-load of cash on something just to get it wrong because of a minor detail such as the terminology used.  In my job it's ALWAYS better to be specific.
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Craig BeckCommented:
@Netminder - I don't see why you removed the last sentence from my post?

Also, none of my comments were 'off-topic'.  You should have at least given me a chance to remove the 'off-topic' comments myself first before editing my post.

At the end of the day if someone's comments are incorrect or misleading it is (and should be) the responsibility of other 'experts' to correct the information given in order to ensure the viability of the solution in the future for other users who might be searching for answers to similar problems.  If you read through the thread I think you'll find that the expert with the complaint was actually the one who first took the comments 'off-topic' with the statement:
Can I encourage you to actually read the document you gave the link to.
Without being offensive, a quick look at the other expert's statistics clearly display that said expert is not a qualified expert in the field in which he is commenting, so I don't think it would be at all 'personal' or 'unprofessional' if someone who is qualified to comment does so.  If the person being corrected can't accept that their information is incorrect but instead wants to be sarcastic and defensive when a qualified expert points out the errors then that user should be reminded of the purpose of this forum.
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pjwallisCommented:
Hi,
I withdraw from this question and offer craigbeck my apologies.
My apologies to dxbdxb2009 also.
pjwallis
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