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will STP reconverge when uplinkfast/Backbonefast is enabled ?

Raghavendra Bandaru
Level 1
Level 1

‎09-08-2011 03:24 AM - edited ‎03-07-2019 02:06 AM

Can anyone confirms with a tested proof, If  STP reconverge when uplinkfast/Backbonefast is enabled ?

SPanning tree mode being used is Rapid PVST.

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lgijssel
Level 9
Level 9

‎09-08-2011 04:12 AM

You should not use Uplinkfast/Backbonefast with RSTP. Both are improvements which are only valid for the older PVST+.

They have no functionality with RSTP and may cause adverse effects. Please turn them off.

You may check the technology page at:

http://www.cisco.com/en/US/tech/tk389/tk621/tk845/tsd_technology_support_sub-protocol_home.html

It states:

Rapid Spanning Tree Protocol (RSTP) is an evolution of the Spanning Tree Protocol (802.1D standard) and provides for faster spanning tree convergence after a topology change. The standard also includes features equivalent to Cisco PortFast, UplinkFast and BackboneFast for faster network reconvergence.

regards,

Leo

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