Quick Reference Guide

200 | Security Commands
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radius server host
Configure the RADIUS authentication and accounting server connections.
Syntax
radius server host {auth | acct} ipaddr [port]
no radius server host {auth | acct} ipaddr
Usage
If the auth keyword is used, the command configures the IP address to use to connect to a RADIUS
authentication server. Up to 3 servers can be configured per RADIUS client. If the maximum number
of configured servers is reached, the command will fail until one of the servers is removed by
executing the no form of the command.
If the optional port parameter is used with the auth keyword, the command will configure the UDP
port number to use to connect to the configured RADIUS authentication server. In order to configure
the UDP port number, the IP address must match that of a previously configured RADIUS
authentication server. The port number must lie between 1 - 65535, with 1812 being the default value.
If the acct keyword is used, the command configures the IP address to use for the RADIUS
accounting server. Only a single accounting server can be configured. If an accounting server is
currently configured, it must be removed from the configuration using the no form of the command
before this command succeeds. If the optional port parameter is used, the command will configure the
UDP port to use to connect to the RADIUS accounting server. The IP address specified must match
that of a previously configured accounting server. If a port is already configured for the accounting
server, then the new port will replace the previously configured value. The port must be a value in the
range 1 - 65535, with 1813 being the default value.
The no version of this command is used to remove the configured RADIUS authentication server or
the RADIUS accounting server. If the auth keyword is used, the previously configured RADIUS
authentication server is removed from the configuration. Similarly, if the acct keyword is used, the
previously configured RADIUS accounting server is removed from the configuration. The ipaddr
parameter must match the IP address of the previously configured RADIUS authentication /
accounting server.
Mode
Global Config
Parameters
auth
Use this keyword if you want to configure a connection to a RADIUS authentication
server. See Usage, below.
acct
Use this keyword if you want to configure a connection to a RADIUS accounting
server. See Usage, below.
ip-addr
Enter the IP address, in dotted decimal format, of the server host.
port
(Optional) Configure the UDP port number to use to connect to the configured
RADIUS server. See Usage, below.
Related
Commands
authentication login Define an authentication login list.
show radius Display RADIUS servers.
users defaultlogin Assign the authentication login list to use for non-configured users when
attempting to log in to the system.