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PVST and link loss

mlouis
Level 1
Level 1

I have a site with approx 25 switches, 2 3750 G-12 stacks of two are the distribution layer for the complex. There are redundant links to both sets of stacks. Spanning-tree keeps re-calculating based on topology changes of links losing protocol. The links don't go down but they does, for about 2 to 10 seconds lose their layer 2. Anyone ever see anything link this?

1 Reply 1

glen.grant
VIP Alumni
VIP Alumni

I would start looking for links that are taking large amounts of link errors . Also verify that all user ports on your access layer have portfast turned on and portfast turned off on any switch connecting links .

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