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Yo James!
On Fri, 2 Dec 2005, James Eaton-Lee wrote:
Layer two only provides connectivity to machines attached to the same
segment.
You have to be very carefull on what denotes a segment. What with
bridges and tunnels that segment could have a crazy topology. I have
ethernet segments that span 2 states using bridge style tunneling.
In the case of ethernet, this means the local network segment,
such as a 192.168.0.1/24 class C subnet of 255 hosts - in order to
communicate with hosts on a wide area/extended/inter network (ie. across
more than one local network), traffic needs to be routed (which occurs
at layer three).
You are confusing layer 2 and layer 3. There are no IPs on layer 2!
I often put several layer 3 IP subnets on one physical layer 2 net. You
can do this with or without using VLAN tagging.
RGDS
GARY
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Gary E. Miller Rellim 20340 Empire Blvd, Suite E-3, Bend, OR 97701
gem@rellim.com Tel:+1(541)382-8588 Fax: +1(541)382-8676
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