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New Member

4900 M Switch with 3750 FiBer connectivity

Hi,


 


We need to connect following switch over DarK Finber


 


 


4900M  with this fiber




<TR style="HEIGHT: 15pt" mcestyle="height: 15pt;">

<TD style="WIDTH: 88pt; HEIGHT: 15pt" height=20 width=117 mcestyle="width: 88pt; height: 15pt;">10GBase-LX4

 or


10GBase-LR


 


Other end we are having 3750-48 TS with this module :1000BaseSX SFP


 


Will the above fiber module are compatible ?


 


Br/Subhojit 


                  

17 REPLIES
Hall of Fame Super Gold

4900 M Switch with 3750 FiBer connectivity

Will the above fiber module are compatible 

Not remotely compatible for two reasons:

1.  One end is LR and the other end is SX.  Both has to be the same, either LR-LR or SX-SX.  Not both.

2.  One end is 10 Gbps and the other is 1 Gbps.  Both end has to be same, either 10 Gbps or 1 Gbps. 

New Member

4900 M Switch with 3750 FiBer connectivity

Hi,

Is it possible if I do the same

on 4900M : we can configure 1Gbps ( speed & duplix setting) then Is it possible to connect with 3750 Switch.

on 4900M side: we have any one of them : 10GBase-LX4,10GBase-LR ( Which end physical termination SC)

On 3750 Side: we have 1000BaseSX SFP ( switch end physical termination LC)

In between the switches we have single mode finer

In case the same is not compatible, what is the possbile workaround

Br/Subhojit

Hall of Fame Super Gold

Re: 4900 M Switch with 3750 FiBer connectivity

on 4900M side: we have any one of them : 10GBase-LX4,10GBase-LR ( Which end physical termination SC)

On 3750 Side: we have 1000BaseSX SFP ( switch end physical termination LC)

Not remotely compatible for two reasons:

1.  One end is LR and the other end is SX.  Both has to be the same, either LR-LR or SX-SX.  Not both.

2.  One end is 10 Gbps and the other is 1 Gbps.  Both end has to be same, either 10 Gbps or 1 Gbps.

In case the same is not compatible, what is the possbile workaround

The 4900M can support CVR-X2 module.  So if you have WS-X4908 line card, you just get one CVR-X2 module and you should be able to use the following 1Gbps SFP modules:

GLC-T (1000BASE-T)
GLC-SX-MM
GLC-LH-SM
GLC-ZX-SM
GLC-SX-MMD
GLC-LH-SMD

GLC-BX-D
GLC-BX-U
CWDM SFP
DWDM SFP

DWDM SFP (add.)

GLC-EX-SMD
(CPN 10-2624-01
or later only)

GLC-ZX-SMD


New Member

Re: 4900 M Switch with 3750 FiBer connectivity

HI Leo,

Many thanks for your support

Can you pls share the relevant cisoc docuemntation (SFP card compatibility matrix, for my knowledge only

Also, Pls provide the below info

1) If I insert SX SFP module on 4900M, will it support single model finer termination.

2) If I insert any LR module in 3750, Will it work, if yes -- pls share the respective SFP details

Br/Subhojit

Hall of Fame Super Gold

Re: 4900 M Switch with 3750 FiBer connectivity

2) If I insert any LR module in 3750, Will it work, if yes -- pls share the respective SFP details

Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting

Hall of Fame Super Gold

Re: 4900 M Switch with 3750 FiBer connectivity

1) If I insert SX SFP module on 4900M, will it support single model finer termination.

I have already answered this question, twice. 

New Member

Re: 4900 M Switch with 3750 FiBer connectivity

Hi Leo,

Small query,

1) As for 4900M, Lr module support only MMF & LX module support only SMF,

for 3750G switch , pls confirm the below

SX SFP support SMF & LX SFP support MMF, or they are supporting for means SMF & MMF

2) Fiber conditioning patch cord use - in this Industry recomended or any performace degradation can observed

Br/Subhojit

Hall of Fame Super Gold

4900 M Switch with 3750 FiBer connectivity

1) As for 4900M, Lr module support only MMF & LX module support only SMF

Seriously, you need to read and understand my responses.  I have already responded to similar questions, TWICE.

for 3750G switch , pls confirm the below SX SFP support SMF & LX SFP support MMF, or they are supporting for means SMF & MMF

Same as above.  Similar line of question has been answered TWICE.

Hall of Fame Super Gold

4900 M Switch with 3750 FiBer connectivity

2) Fiber conditioning patch cord use - in this Industry recomended or any performace degradation can observe

If you are using LX laser modules, patch conditioning cable is recommended. 

New Member

4900 M Switch with 3750 FiBer connectivity

Hi Leo,

Pls find the inventory from 4900M Switch, It seems we are having CVR-X2 Card.

sh module 
Chassis Type : WS-C4900M

Power consumed by backplane : 0 Watts

Mod Ports Card Type                              Model              Serial No.
---+-----+--------------------------------------+------------------+-----------
1     8  4900M 10GE (X2)                        WS-C4900M          JAE154501DW
2    20  10/100/1000BaseT (RJ45)                WS-X4920-GB-RJ45   JAE14090382
3    24  10GE (X2), 1000BaseX (SFP)             WS-X4908-10GE      JAE14090NAY

So, as you mentioned in earlier Post, WS-X4908-10GE ( we can use LR or LX4 based on our requirement) is supporting CVR-X2 Module.

So we have 2 option as per my understanding, Pls correct me If I am wrong

For SMF case,

1) So on 4900M, We can use LR connector & on 3750G end we can use GLC-LH-SM Type SFP with 1G Speed.

For MMF Case,

2) So on 4900M, We can use LX4 connector & on 3750G end we can use GLC-SX-MM Type SFP with 1G Speed

Br/Subhojit

Hall of Fame Super Gold

Re: 4900 M Switch with 3750 FiBer connectivity

2) So on 4900M, We can use LX4 connector & on 3750G end we can use GLC-SX-MM Type SFP with 1G Speed

Subhojit,

For the THIRD TIME, this is not going to work. 

1) So on 4900M, We can use LR connector & on 3750G end we can use GLC-LH-SM Type SFP with 1G Speed.

As long as BOTH SIDES use GLC-LH-SM, this will work.

New Member

Re: 4900 M Switch with 3750 FiBer connectivity

Thanks Leo for your time.

1 last query:

Can you pls share the P/N of the 1G SFP compatible with 4900M ( CVR -X2 Module)

Br/Subhojit

Hall of Fame Super Gold

4900 M Switch with 3750 FiBer connectivity

Can you pls share the P/N of the 1G SFP compatible with 4900M ( CVR -X2 Module)

I have already given you a list of SFP compatible with 4900M CVR-X2.  All you need to do is scroll up and read my posts. 

New Member

Re: 4900 M Switch with 3750 FiBer connectivity


Hi,

Sorry for wrong question, What I try to mean -- As per your earlier Post, Below SFP are compatible.


GLC-T (1000BASE-T)
GLC-SX-MM
GLC-LH-SM
GLC-ZX-SM
GLC-SX-MMD
GLC-LH-SMD

Pls share the CVR-X2 module part-code(blank module) where the above SFP will fit, so that I can insert the X2 module in 4900M

As the above SFP normally used in 3750 Series switch.

Br/Subhojit

Hall of Fame Super Gold

4900 M Switch with 3750 FiBer connectivity

Pls share the CVR-X2 module part-code(blank module) where the above SFP will fit

Good grief!

I've already provided the part code (including the data sheet). 

New Member

4900 M Switch with 3750 FiBer connectivity

Thanks

Br/Subhojit

New Member

Re: 4900 M Switch with 3750 FiBer connectivity

Hi Leo,

We have tried with CVR-X2 connector with the 1G SFP, but the same is not detecting.

Any dependency with IOS.

Present IOS is : cat4500-ipbasek9-mz.122-50.SG3.bin

Br/Subhojit

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