No... To STP, the entire bundle of links in an etherchannel count towards STP calculations... STP will not consider it a topology change until the last link in an etherchannel fails...
----- Original Message ----- From: "Urooj's Hi-speed Internet" To: Sent: Saturday, October 20, 2001 11:08 AM Subject: Design Question - Spanning-tree Protocol. [7:23614] > 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=23639&t=23614 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
