Well, for 3500yl it exists.
From
http://cdn.procurve.com/training/Manuals/yl-zl-RelNotes-K1351-59914720.pdf"Release K.13.51 Enhancements
Release K.13.51 includes the following enhancements.
â Enhancement â Support is added for the J9154A HP ProCurve ONE Services zl Module.
â Enhancement (PR_0000003144) â Support is added for multiple RADIUS groups.
RADIUS Server Groups
Overview
The authentication and accounting features on the switch can use up to three RADIUS servers, a
primary server and two backup servers. This feature allow the RADIUS servers to be put into a group.
The same three RADIUS servers would continue to be used. Up to 5 groups of RADIUS servers can
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Enhancements
Release K.13.51 Enhancements
be configured. The authentication and accounting features can choose which RADIUS server group
to communicate with. End-user authentication methods (802.1X, MAC-based and web-based) can
authenticate with different RADIUS servers from the management interface authentication methods
(console, telnet, ssh, web)."
The question is whether the 2910al also supports it?