So all in all what is trying to be said (I reckon) is NO you will not have
aggregated bandwidth as spanning tree will absolutely definitely shut down
one port. If you say that spanning tree is off then lets take an example.
A pc sends out a unicast onto the hub. That packet is then copied to every
port on that hub. The switch is then left with two identical packets from
that pc. What should it do with them forward both packets to the
destination (behave), hence spanning tree.
If you do as suggested have portfast on then you WILL create a loop.
(UNWISE)
my 2p
-----Original Message-----
From: Marc Quibell [mailto:[EMAIL PROTECTED]]
Sent: 26 July 2000 16:04
To: [EMAIL PROTECTED]
Subject: Connecting Switches, hubs..
I have a simple question, and one which I cannot readily answer at this
time. Can I safely connect TWO switch ports from a Cisco 5509 (two different
switch blades) to a hub to increase the hub's crossconnection bandwidth,
without having a looping problem? The hub is actually a DEC multi-blade,
with a swithced backplane. The hub is also connect on two different blades,
but the same backplane. TIA!
btw, I have already done this and I figured if spanning tree found a looping
problem, it wouldv'e set one of the ports to a non-forwarding state..
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