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New Member

spanning-tree modes and older switches

Hello,

i have some 3560G switches, which are running rapid-PVST+ .

Now i would like to integrate some older 3550s to this LAN. As far as i can see they are only capable of rapid PVST (without the +).

Do i have to switch back to the older PVST to use the 3550s with the 3560Gs ?

regards

Joerg

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Blue

Re: spanning-tree modes and older switches

Joerg

PVST was designed for use with ISL encapsualtion.

PVST+ was designed for use with 802.1q encapsulation.

The 3550 supports Rapid-PVST+ just as the 3560 switches do. Some of the literature can be a bit confusing but see attached link which clearly shows that Rapid-PVST+ is supported by 3550 switches.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807b0670.shtml

Jon

3 REPLIES
Hall of Fame Super Blue

Re: spanning-tree modes and older switches

Joerg

PVST was designed for use with ISL encapsualtion.

PVST+ was designed for use with 802.1q encapsulation.

The 3550 supports Rapid-PVST+ just as the 3560 switches do. Some of the literature can be a bit confusing but see attached link which clearly shows that Rapid-PVST+ is supported by 3550 switches.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a00807b0670.shtml

Jon

New Member

Re: spanning-tree modes and older switches

Hello Jon,

thanks for your answer.

I thought i did RTFM, but it seems i missed the right "M".

So - thanks for your help!

regards

Joerg

New Member

Re: spanning-tree modes and older switches

thans jon

same as say!

thanks for your answer.

I thought i did RTFM, but it seems i missed the right "M".

So - thanks for your help!

Habib

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