I agree with Henry. If you have EtherChannel configured on the uplinks, you should not have any blocked ports as EtherChannel allows parallel links to be treated by spanning tree as one link. Do a "show port channel" and ensure Channel Status says "channel" to ensure EtherChannel is enabled on the ports.
""Urooj's Hi-speed Internet"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi Folks, > I have a design in which Cisco 3548 XL's are GBIC-stacked on various floors > of a campus and are uplinked to a core Cat 6509 switch. The uplink from > every floor stack is ether-channeled to the core via two parallel equal-cost > paths. One uplink path starts "forwarding" and the other goes into > "blocking" mode from each floor stack. > > Here is my confusion... If only one link of a 400 MBps full-duplex > ether-channel fails from the forwarding path , will it invoke spanning-tree > recalculation ??? Or will the 'now' sub-optimal path still remain in > forwarding mode and the now more-bandwidth path remain in blocking mode ??? > > Since spanning-tree recalculation causes a lot of ripples throughout the > switched network, I would assume that the latter were true. However, I would > like to hear views from people who would think that the former scenario is > more probable. > > Thanks very much. > > Aziz Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23728&t=23614 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
