From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Mon Jun 11 2001 - 00:38:34 GMT-3
A TrCRF represents a ring - the 'VLAN' number is actually a ring number and
a name is just for administrative identification. Why do we use a VLAN
number - well because a ring is very similar to a segment - hence a TrCRF
can be represented by a VLAN.
If you look at a traditional source routed environment, physically you have
rings and bridges
e.g.
Ring 1 ----- Bridge 1 ----- Ring 2
The bridge 'bridges' frames between each ring.
Now a Token switch just implements the above at a logical level in a single
physical device. A TrCRF corresponds to a ring and A TrBRF corresponds to a
Bridge
E.g.
TrCRF1 ---------- TrBRF1 -------- TrCRF2
Ports 1,2 Ports 3,4
The above TrCRFs have a parent TrBRF of 1, and Ports 1,2 are on the same
ring (1) and 3,4 are on the same ring (2).
Regards,
Justin Menga CCIE #6640 CCNP+Voice+ATM CCDP MCSE+I CCSE
Network and Security Consultant
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
web: http://www.computerland.co.nz
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-----Original Message-----
From: Ken Yeo [mailto:kenyeo@on-linecorp.com]
Sent: Monday, 11 June 2001 2:54 p.m.
To: Roman Rodichev; ccielab@groupstudy.com
Subject: Re: confused about TrCRF and TrBRF
Good question.
The reason to assign VLAN number and name to TrCRF is to distinguish among
TrCRFs? So why we need TrCRFs? My answer to my question is to create domains
to seperate source-route (RIF) and non-source-route (no RIF) frames.
Anyone has a better enplaination?
Thanks!
----- Original Message -----
From: "Roman Rodichev" <rodic000@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, June 10, 2001 5:28 PM
Subject: confused about TrCRF and TrBRF
> what is the purpose of assigning a vlan to trcrf?
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