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What STP algoritm si run by ISTs in MIST ?

I assume that it must be RSTP which has the highest degree of compatibility with any other STP flavours.

Am I right ? I couldn't find anything in the documentation and I do not have access to a switch running MST

Thank you

Cristian

1 REPLY
Cisco Employee

Re: What STP algoritm si run by ISTs in MIST ?

Hi Cristian,

Yes, your assumption is quite right. The IST instance is actually RSTP instance that extends the CST inside the MST instance such that the region appears as one virtual CST bridge to the outside world.

This would certainly make it clear:

MIST

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfc.shtml

RSTP

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfc.shtml

Hope it helps you.

Regards

Rajat Chauhan

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