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New Member

fc domains

So what is the opion about FC domains? I was working with an EMC tech who said it wasn't best practice to utilize FC domains for things like zoning.

As I am new to SAN Switches, I wasn't sure but figured I would ask some people's opinions before making changes.

4 REPLIES
Cisco Employee

Re: fc domains

It is probably best to zone based upon the pwwn of the devices that are attaching into the fabric. You can zone upon the FCID that is given to those devices but you better make sure that persistent FCID is enabled and the fcdomain is configured as static and is the same number as what is in the zoning info.

New Member

Re: fc domains

I don't me the zoning based on FCIDs but the FCDomain itself, things like zoning and zoneset being sent via FCDOMAINS.

Cisco Employee

Re: fc domains

I'm not sure I'm following you here. The fcdomain is a number that is 1 byte long (1-239) and is the address of a vsan per switch. So, before vsans, it would have been the address of that switch. Zoning and zonesets are a different concept. You can think of zoning as access lists that permit devices access to each other. To zone, you use some designator to define those devices like pwwn, fcid, interface, etc. Between two switches with the same vsan, there must be a homogeneous zoneset whether that is acheived by merging or activating a zoneset in one switch to force it propogate to the other switch(s). Is it possible that you are referencing the CFS (Cisco Fabric Services) feature?

New Member

Re: fc domains

Funny, I totally brained that one.

Our EMC tech referred to it as FCDOMAIN but I believe he meant CFS.

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