Fibre Channel (SAN)

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Occasional Visitor
Posts: 1
Registered: ‎04-22-2014

what is the difference betwwen ICL AND ISL

 
Regular Contributor
Posts: 226
Registered: ‎01-08-2011

Re: what is the difference betwwen ICL AND ISL

ICL - Chassi - Only available in DCX switches.

ISL - Switch - In all FC ports.

 

ICL - Special connector and cable and max 16 x 8 Gbps per cable

ISL - SFP+ and max 16Gbps

 

More info about ICL here: http://www.brocade.com/downloads/documents/technical_briefs/DCX_ICL_Connectivity_GA-TB-159-00.pdf

Brocadian
Posts: 68
Registered: ‎04-16-2010

Re: what is the difference betwwen ICL AND ISL

The technical differences have already been covered so I’ll just add a few comments from a SAN design perspective.

 

The key advantages of ICLs are that they don’t use any front side ports and typical ICL configurations have considerably more B/W than would be reasonably possible with ISL designs. ICLs still connect to the switch ASICs as an ISL would and the switches on either side of the ICLs still have a different domain but from a high level SAN design perspective I like to think of them as extensions of the backplane. Just as ISLs, you can put them in a base switch and share the B/W with some or all logical switches in the chassis.

 

Contributor
Posts: 44
Registered: ‎12-23-2013

Re: what is the difference betwwen ICL AND ISL

if remember well , when you use ICL then max. number of switches in fabric is 3

 

rgds

External Moderator
Posts: 5,033
Registered: ‎02-23-2004

Re: what is the difference betwwen ICL AND ISL

robert,

 

the max. amount - depend of DCX model 4 or 8 - of ICL is 16 in 8510-8

 

in such case with both activated ICL POD License up to eight other Chassis can become Member of the Fabric.

 

First DCX Generation support up to 4 ICL.

TechHelp24

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