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Webcast-Catalyst9k
New Member

One command for DTP,

hi ,

i have 52 port switch 3750. all port are Dynamic auto. if i connect another switch so its make Trunk auto ,  which is not requird for security purpose ,

- i need to know One command or trick which i can disable , DTP in switch and make it more secure,--please answer ,

1 REPLY
Hall of Fame Super Blue

Re: One command for DTP,

3750(config)# int range gii0/1 - 52

3750(config-if-range)# switchport nonegotiate

you should then set your ports to access ports (except for the trunk links obviously) eg  -

3750(config-if-range)# switchport mode access

Jon

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