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CCNP Security SISAS 300-208 Official Cert Guide by Kevin Redmon, Aaron Woland

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More on MAB

One of the things that is often not understood, especially when looking to mix access device vendors, is MAB. There is no standard for MAB. Different vendors implement MAB in different ways. Ultimately, the goal is to allow the supplicant in the switch itself to run an authentication request for the endpoint because the endpoint obviously must not have a supplicant.

Some vendors send a RADIUS service-type of Login; some send a RADIUS service-type of Framed. Cisco uses a service-type of Call-Check for MAB. Why would Cisco use Call-Check if no other vendor does? Why does Cisco do MAB differently from everyone else? Quick answer: security.

Many years ago, before Cisco released Cisco ISE or the Cisco ACS 5.x server, there was a possible ...

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