User`s guide

DES-3226S Layer 2 Switch CLI Reference
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config stp
802.1d STP select stp. Select rstp for IEEE
802.1w Rapid STP.
Restrictions Only administrator-level users can issue this
command.
Example usage:
To configure STP with maxage 18 and hellotime 4:
DES-3226S:4#config stp maxage 18 hellotime 4
Command: config stp maxage 18 hellotime 4
Success.
DES-3226S:4#