48 Brocade ICX 6650 Security Configuration Guide
53-1002601-01
RADIUS security
Specifying different servers for individual AAA functions
In a RADIUS configuration, you can designate a server to handle a specific AAA task. For example,
you can designate one RADIUS server to handle authorization and another RADIUS server to
handle accounting. You can specify individual servers for authentication and accounting, but not
for authorization. You can set the RADIUS key for each server.
To specify different RADIUS servers for authentication, authorization, and accounting, enter
commands such as the following.
Brocade(config)# radius-server host 10.2.3.4 authentication-only key abc
Brocade(config)# radius-server host 10.2.3.5 authorization-only key def
Brocade(config)# radius-server host 10.2.3.6 accounting-only key ghi
Syntax: radius-server host ip-addr | ipv6-addr | server-name [auth-port number] [acct-port
number] [authentication-only | accounting-only | default] [key 0 | 1 string]
The default parameter causes the server to be used for all AAA functions.
After authentication takes place, the server that performed the authentication is used for
authorization and accounting. If the authenticating server cannot perform the requested function,
then the next server in the configured list of servers is tried; this process repeats until a server that
can perform the requested function is found, or every server in the configured list has been tried.
RADIUS server per port
You can optionally configure a RADIUS server per port, indicating that it will be used only to
authenticate users on ports to which it is mapped. A RADIUS server that is not explicitly configured
as a RADIUS server per port is a global server, and can be used to authenticate users on ports to
which no RADIUS servers are mapped.

RADIUS server per port configuration notes

•This feature works with 802.1X and multi-device port authentication only.
•You can define up to eight RADIUS servers per Brocade device.

RADIUS configuration example and command syntax

The following shows an example configuration.
Brocade(config)# radius-server host 10.10.10.103 auth-port 1812 acct-port 1813
default key mykeyword dot1x port-only
Brocade(config)# radius-server host 10.10.10.104 auth-port 1812 acct-port 1813
default key mykeyword dot1x port-only
Brocade(config)# radius-server host 10.10.10.105 auth-port 1812 acct-port 1813
default key mykeyword dot1x
Brocade(config)# radius-server host 10.10.10.106 auth-port 1812 acct-port 1813
default key mykeyword dot1x
The above configuration has the following affect:
•RADIUS se rvers 10.10 .10.103 and 10.10 .10.104 will b e used on ly to auth enticate users on
ports to which the servers are mapped. To map a RADIUS server to a port, refer to “RADIUS
server to individual ports mapping” on page 49.