help - L1 aggregate/multiplex using Nexus/65xx ???

Answered Question
Nov 28th, 2011

Hi !

This is a field i never got into so i lack few details . so forgive my trivial questions .

I have a datacenter spread on two buildings .

naturally i connect the two parts of the datacenter over the meetmeroom .

as i grow the amount of the fibers i need to add also grows . and the cost accordingly ...

i would like to find a way to take several Ingress 10G fibers and aggregate them at layer 1 , not layer 2 , into 2 or more Egress 10G fibers .

like taking each ingress and have it through a specific color/channel in the light ?

the reason i want layer 1 and not 2 is to override looping possibility . i see L2 here as a point of failure . and trying to avoid hanging switch on another switch .

like probabaly to put two of these on each side .

so my devices are :

Nexus 5010

Netxus 5548

Catalyst 65xx

is there a way to transform each of them to do that ?

ill thank you if you can drop here few devices who can do that .

Thanks

I have this problem too.
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Correct Answer by Tom Randstrom about 2 years 4 months ago

You could deploy multiple 10G channels over a pair of singlemode fibers (SMF) using CWDM or DWDM technology. 

The 6500 supports pluggable DWDM optical interfaces, which can be connected directlyto the DWDM filters in the EWDM solution. The Nexus 5010 & 5548 don't seem to support pluggable DWDM optics, so you could use am external transponder (one option provided below) which can be configured to accept a standard 10G SX or LX optical signal from the Nexus and output a DWDM (or CWDM) signal for the DWDM or CWDM optical filters. 

CWDM Filters

https://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6575/product_data_sheet0900aecd8029d01b_ps708_Products_Data_Sheet.html

EWDM Filter Solution

http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html

10G Tranponder - MRV

http://www.mrv.com/product/MRV-FD-10GXY

Working with 10G WDM optics will not be inexpensive and, depending upon your network,, it may be less costly to install additional fiber. 

I hope this helps!

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Correct Answer
Tom Randstrom Mon, 11/28/2011 - 20:02

You could deploy multiple 10G channels over a pair of singlemode fibers (SMF) using CWDM or DWDM technology. 

The 6500 supports pluggable DWDM optical interfaces, which can be connected directlyto the DWDM filters in the EWDM solution. The Nexus 5010 & 5548 don't seem to support pluggable DWDM optics, so you could use am external transponder (one option provided below) which can be configured to accept a standard 10G SX or LX optical signal from the Nexus and output a DWDM (or CWDM) signal for the DWDM or CWDM optical filters. 

CWDM Filters

https://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6575/product_data_sheet0900aecd8029d01b_ps708_Products_Data_Sheet.html

EWDM Filter Solution

http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_data_sheet0900aecd806a1c36.html

10G Tranponder - MRV

http://www.mrv.com/product/MRV-FD-10GXY

Working with 10G WDM optics will not be inexpensive and, depending upon your network,, it may be less costly to install additional fiber. 

I hope this helps!

HummusChipsSalat Tue, 11/29/2011 - 07:06

Hi tom !

thanks for the valuable info !

just one question -

do i need to purchase a special sfp for connecting my 6500 to the EWDM ?

it sounds strange to me, because i suppose the EWDM device is doing all the "coloring" with mirrors , mechanically ?

Tom Randstrom Tue, 11/29/2011 - 08:09

You will need to purchase the DWDM pluggable optics module type (X2, XENPAK, Etc) that is compatible with the 6500 card you are using.  The link below is the the 10G pluggable transceiver compatibility document.

http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6974.html#wp56524

The selected DWDM pluggable module wavelength (color) needs to match an available wavelength on the EWDM filter unit.  The TX (transmit) port on the DWDM pluggable optics module (installed in the 6500) is connected to the IN port (matching wavelength) of the EWDM; the RX (receive) port on the DWDM pluggable optics module is connected to the OUT port (matching wavelength) of the EWDM filter. This is duplicated at the other end of the fiber link.

Each wavelength on the EWDM filter can be thought of as a pair of fibers.  The equipment's optical ports (on each end if the link) need to match the wavelength of the port it will attach to on the EWDM filters.

I hope this answers your questions.  

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Posted November 28, 2011 at 3:18 PM
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