do NOT support the command below：
radius-server host x.x.x.x auth-port 1812 acct-port 1813
how to solve?
sw(config)#radius-server ?
accounting Accounting information configuration
attribute Customize selected radius attributes
authorization Authorization processing information
backoff Retry backoff pattern(Default is retransmits with
constant delay)
cache AAA auth cache default server group
challenge-noecho Data echoing to screen is disabled during
Access-Challenge
configure-nas Attempt to upload static routes and IP pools at startup
dead-criteria Set the criteria used to decide when a radius server is
marked dead
deadtime Time to stop using a server that doesn't respond
directed-request Allow user to specify radius server to use with `@server'
domain-stripping Strip the domain from the username
load-balance Radius load-balancing options.
optional-passwords The first RADIUS request can be made without requesting a
password
retransmit Specify the number of retries to active server
retry Specify how the next packet is sent after timeout.
source-ports source ports used for sending out RADIUS requests
throttle Throttle requests to radius server
timeout Time to wait for a RADIUS server to reply
transaction Specify per-transaction parameters
unique-ident Higher order bits of Acct-Session-Id
vsa Vendor specific attribute configuration
sw(config)#radius-server
