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I have 5 3550 switches in the datacenter connected to each other with
the gigastack cards and yellow cables. I am not sure if the
cabling was setup correctly. I believe there is 1 redundent link from
the last switch to the first. Is this correct? Could someone
point me in the right direction. I checked the interface of Ga0/8 and
its running at HALF/1000. is this correct? Is it possible to make it
run FULL DUPLEX. I see alot of collissions on that interface but do not
see anything on GA0/1 - GA0/7

thanks in advance.

Z

In a cascaded topology with a redundant link, all GigaStack interfaces
will automatically negotiate to half-duplex.


see Cisco document "Catalyst Switch GigaStack Configuration and
Implications"

http://www.cisco.com/en/US/products/...800a2cac.shtml

Would that decrease performance on the switches?

Would that decrease performance on the switches?

Yes.

You could try removing the redundant link to see if the switches will
negioate to full-duplex.

For the Switches on each of the Floors (2switches each floor).
Is it recommended to just use point to point and not cascade the
gigastack cards?

for your floor switches, you would need to determine whether the level
of collisions warrantes changing to point-to-point so that the
gigastack llink runs in full-duplex mode