Deployment Guide

Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Included a prompt to force the users to re-authenticate when there is a change in
the RADIUS server list.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.4.1.0 Added support for IPv6.
8.3.7.0 Introduced on the S4810.
7.7.1.0 Authentication key length increased to 42 characters.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.0 Introduced on the E-Series.
Usage
Information
To configure any number of RADIUS server hosts for each server host that is configured, use this
command. Dell EMC Networking OS searches for the RADIUS hosts in the order they are configured in
the software.
The global default values for the timeout, retransmit, and key optional parameters are applied,
unless those values are specified in the radius-server host or other commands. To return to
the global default values, if you configure the timeout, retransmit, or key values, include those
keywords when using the no radius-server host command syntax.
You can use duplicate host names or IP addresses among RADIUS groups. However, you cannot use
duplicate host names or IP addresses within the same RADIUS group. If a VRF is not configured on the
RADIUS group, then servers configured in the group are considered to be on the default VRF. RADIUS
servers that are configured in the CONFIGURATION mode are also considered to be on the default VRF.
You must configure the RADIUS group explicitly with the aaa radius group command in order for the
AAA servers to use the group of RADIUS servers. The 802.1x servers use the group of RADIUS servers
based on the VRF where the 802.1x request is received. As a result, it is possible that both globally
configured RADIUS servers as well as the group-configured RADIUS servers (without VRF or default
VRF) are used for processing the 802.1x requests that are received at the default VRF. The order in
which the RADIUS servers are tried depends on the order in which the RADIUS servers are configured.
Example
DellEMC(config)#radius-server host 192.100.0.12
Force all logged-in users to re-authenticate (y/n)?
DellEMC(config)#no radius-server host 192.100.0.12
Force all logged-in users to re-authenticate (y/n)?
1368 Security