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stp, bpdu

kamtarias
Beginner
Beginner

‎08-14-2016 02:10 AM - last edited on ‎03-25-2019 01:30 PM by Community Manager

Hi Guys,

Root bridge has all ports as DP. Root bridge send BDPU across DP. JUst want to know if there are multiple DP port on Root Bridge, which DP port it will use to send BPDU.

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Zaid Abuali
Cisco Employee
Cisco Employee

‎08-14-2016 12:49 PM

Hello

Root bridge will send BPDUs across all its DP ports. following links might be useful for you:

http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24062-146.html

https://supportforums.cisco.com/discussion/11061531/stp-root-port-vs-designated-port

Hope this helps

Best Regards,

Zaid

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