Users 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 congure any number of RADIUS server hosts for each server host that is congured, use this command. Dell
Networking OS searches for the RADIUS hosts in the order they are congured in the software.
The global default values for the timeout, retransmit, and key optional parameters are applied, unless those
values are specied in the radius-server host or other commands. To return to the global default values, if
you congure 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 congured on the RADIUS group, then
servers congured in the group are considered to be on the default VRF. RADIUS servers that are congured in the
CONFIGURATION mode are also considered to be on the default VRF.
You must congure 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 congured RADIUS servers as
well as the group-congured 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 congured.
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