From: Asbjorn Hojmark (Asbjorn@xxxxxxxxxxx)
Date: Tue Oct 03 2000 - 15:56:36 GMT-3
> I'm a little confused about the use of the term "vlan" in a
> token ring environment....
I tend to think of CRF VLANs as virtual rings and BRF VLANs
as a domain of bridged rings, a broadcast domain. I don't know
why they chose to call CRFs VLANs instead of VRINGs.
> I have always understood a vlan to be a broadcast domain,
> where a routing function is required to get from one vlan
> to another...
That's true for BRF VLANs.
> Since multiple trcrf's can be connected via the same parent
> trbrf, is a group of rings that share a bridge (trbrf) a
> single broadfcast domain?
Yes.
> If so, what advantage is gained by creating these vlans?
It's like micro-segmentation for token-ring. Remember that
stations on a ring share a token and that some frames are
local to a ring while others are global for the bridged
domain.
> Also, can rings that don't share the same parent trbrf
> communicate without some sort of routing occurring
No.
HTH,
-A
-- Heroes: Vint Cerf & Bob Kahn, Leonard Kleinrock, Robert Metcalfe Links : http://www.hojmark.org/networking/
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