Ok, I am really struggling to understand the usefulness of VLANs here. In
the Switching exam book, it states that VLANs remove the physical boundaries
of the network and a user anywhere on the network can be a member of any
VLAN (IP subnet). Now I do understand this concept, but consider the
following scenario..
Building A Building B
VLAN1-----Switch1 Switch 1 VLAN3
| |
VLAN2----Switch 2 Switch 2 VLAN 1
| |
| |
L3 switch A------CORE--------L3 switch B
(has router engine) (has router engine)
\ /
\ /
\ /
\ /
\ /
\ /
Servers
VLAN 4
Now lets say that VLAN1 is defined in building A, but some people in
building B need to be part of VLAN1. Doesn't that make L3 Switch A the
default gateway for the VLAN1 user in building B? In which case that user
has to cross the core back to switch A to get his routing to the servers?
Why would you EVER want a network configured this way?? Or even worse, what
if your respective gateway was 3 or 4 L3 switches away? That just doesn't
seem practical to me.
Thanks!
Stephen Hoover
Dallas, Texas
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=63173&t=63173
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