Hi
Greg Scott wrote:
More fundamentally, can I cascade these switches and my bridge/firewall
this deep? How do the Internet router and internal servers find each
others' MAC addresses when they are 4 "hops" (OSI layer 2 hops)
separated? Or am I making this too complicated?
i was taught that you should have no more than 4 switches between any
two LAN nodes, so this should work. STP should be ok, but not needed
until you have some redundant links between bridge/fw and core switches
(if you have more core switches, you would probably like to use more
links for redundancy).
[you would probably want the core switch to become STP root then.. ]
when switch doesn't know destination it works like hub, so at the
beginning your network will be flooded with frames and this way all
switches will learn mac addresses no matter how many hops. (frame will
be broadcasted to all corners of LAN).
servers and router will search for each other's MAC using ARP
broadcasts, which will get to every node in LAN (if you don't filter
them out : ) ). Therefore they will certainly find each other.
(( 4 switches add constant delay to your traffic that i think you would
like to avoid. if you could make internet router a firewall (you
probably can't : ) ), that would remove 2 layers of bridging, would be
more simple and allow more control.
servers--distribution_switch--core_switch--router/firewall
|
internet switch
))
Internal---User---Core-----Firewall---Internet---Internet router
Servers switch switch (Bridged) switch (and default GW for
internal servers)
Thanks
- Greg
___________________________________
S pozdravom / Best regards
John Default
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