How to assign trunking to all ports on a switch at once?

[Andrew Schulz]

I have a Cisco 3560 switch (IOS) that I need to set trunking on all 48 ports. Is there a way to do it as a group? Or do I need to do it interface by interface?

[Jennifer Halim · Accepted solution]

Yes, you can use the "interface range" command to configure all interfaces at once.

Example:

interface range fastethernet0/1 - 2

     switchport mode trunk

Here is the command reference:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_37_se/command/reference/cli1.html#wp2235379

Hope that helps.

[Andrew Schulz]

Thanks for the reply, I ended up finding that CLI references as well.

Maybe you can answer another question, how might i turn off VTP?

[Jennifer Halim · Accepted solution]

Setting the VTP to transparent mode will disable the VTP, ie: it won't participate in the VTP negotiations. Here is the guide for your reference:

http://www.cisco.com/en/US/docs/switches/lan/catalyst2940/software/release/12.1_19_ea1/configuration/guide/swvtp.html#wp1035326

[Andrew Schulz]

Thank you so much for the quick reply and references. I need to dig a little more before posting. Thanks