According to the Brocade FOS Admin guide (I suppose that for Cisco will be the same), FCAP is used to authenticate switchs between each others.      "By default, Fabric OS v6.2.0 and later use DH-CHAP or FCAP protocols for authentication. These protocols use shared secrets and digital certificates, based on switch WWN and public key infrastructure (PKI) technology, to authenticate switches. Authentication automatically defaults to FCAP if both switches are configured to accept FCAP protocol in authentication. To use FCAP on both switches, PKI certificates have to be installed.    FCAP requires the exchange of certificates between two or more switches to authenticate to each other before they form or join a fabric. By default, these certificates are issued by Brocade, and therefore Brocade is the root CA for all of the issued certificates. You can change the default by getting your certificates from a third-party vendor. You can use Brocade certificates between the switches that are Fabric OS v6.4.0 and pre-v6.4.0. The certificates must be in PEM (Privacy Enhanced Mail) encoded format for both root and peer certificates. The switch certificates issued from the third-party vendors can be directly issued from the root CA or from an intermediate CA authority."    To use with end devs DH-CHAP is commonly used and must be supported by the HBA. When it comes to CLARiiON/VNX, I have not found any info indicating that is supported.
Hi There can anyone give me an over view on What is Fibre Channel Authentication Protocol and how it would work with a clariion/vnx ? is it supported etc   Beag
What is Fibre Channel Authentication Protocol