不能解析authentication-mode

             *********************************************************** * * * Switch 4210 26-Port BOOTROM, Version 4.01 * * * *********************************************************** Copyright(c) 2004-2007 3Com Corporation and its licensors. Creation date : May 29 2007, 19:14:41 CPU Clock Speed : 200MHz BUS Clock Speed : 33MHz Memory Size : 64MB Mac Address : 001ac1f1cc35 Press Ctrl-B to enter Boot Menu... 0 Auto-booting... Decompress Image..........................................................................................................................................................................................................................................................................................................................................OK! Starting at 0x80100000...

Press ENTER to get started. Login authentication 

 Username:manager Password: 

<4210> %Apr 1 23:55:38:141 2000 4210 SHELL/5/LOGIN:- 1 - manager(aux0) in unit1 login

 <4210>sys 

 System View: return to User View with Ctrl+Z. 

[4210]user-interface aux0 

[4210-ui-aux0]authentication-mode none

                        ^ 

% Unrecognized command found at '^' position. 

[4210-ui-aux0]