I personally changed out a secondary sup card, when I was new in the lan team.. the redundant sup came up with with the trunk port 2/1 config'd for native vlan 1. this caused the vtp management to issue a vlan mismatch...which then started a stp recalc, which caused utilization on the gateway to go up trying to process the bpdu storm, which prevented the network from working correctly...
leaving everything in native 1 prevents this.... Larry Letterman Network Engineer Cisco Systems Inc. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Erick B. > Sent: Wednesday, October 16, 2002 11:53 PM > To: [EMAIL PROTECTED] > Subject: Re: Native VLAN 1 [7:55743] > > > Comments inline... > > --- The Long and Winding Road > wrote: > > ""Larry Letterman"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > Pris, > > > > > > In our 6509's we used to make the native vlan and > > the data vlan > > > the same and it was something other than 1...if a > > blade fails and > > > we put in a new one , it defaults to vlan 1 for > > all ports. If the > > > blade has trunk ports in it, they get set to > > native vlan 1. The other > > > end is set for something else, this resulted in > > vlan mismatch in the vtp > > > domain, and in a lot of instances we suffered stp > > recalcs that took > > > buildings down for periods of time...we > > subsequently have returned to > > > making native vlan 1 on all trunks and have not > > had any issues since.. > > > > > I want to clarify a few items so we fully understand > this behavior so next time I need to hot-swap I am > prepared to make config changes as well. > > I thought the running config in RAM (and NVRAM) stayed > the same when swapping *same model* blades in the same > slot. If this isn't the case, then is some of the > config the same and some is defaulted? > > Can you point us to a cisco doc explaining this > behavior? > > Thank you very much! > > > > __________________________________________________ > Do you Yahoo!? > Faith Hill - Exclusive Performances, Videos & More > http://faith.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55787&t=55743 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
