CODEWITHSUNDEEP
network-programmingprotocolsspanning-treestp
Networking pup
Networking pup

Reputation: 75

STP - protocol id in bpdu

The STP BPDU begins with the protocol id field and the version id. I understand that the version is the type of the STP: 0 stands for STP,
2 for RSTP
and 3 for MSTP.
So what do we really need the protocol id field for? When will it not be 0?

Upvotes: 0

Views: 455

Answers (1)

Nima Ghotbi
Nima Ghotbi

Reputation: 671

0 packet identifier is for IEEE 802.1D

When will it not be 0?

Packet identifier should be 1 in IEEE 802.1G

Upvotes: 0

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