From: Kyle Galusha (kgalusha@xxxxxxxxx)
Date: Wed May 24 2000 - 09:40:06 GMT-3
The Brf (bridge relay function) can be thought of the as the parent
and the Crf (concentrator function) are children associated with the
parent Brf. The Brf is associated most closely with the logical
subnet/vlan, but the physical ports are associated/concentrated on the
Crf which, as I mentioned, is associated with its parent Brf. This
concept (Brf, Crf) is also used on the token ring blades used on the
CAT5000 family.
Kyle
At 07:20 PM 5/23/2000 -0700, Muthu Mohanasundaram wrote:
>Hi,
>
>I am studying Catalyst 3900 TokenRing switches.
>
>What forms a TokenRing VLAN?
>
>1) A TrCRF with many ports attached to it.
>2) One or more TrCRFs with a parent TrBRF.
>
>I am confused about which one will be a Logical IP
>subnet. The config giude of 3900 does not explain
>this.
>
>Can anyone give me some sample configs. I could't find
>any examples on the DOC CD.
>
>Any help would be appreciated.
>
>Thanks,
>
>Mohan.
>
>
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