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Configuration prerequisites and guidelines
• Configure IP addresses for the switch and servers as shown in Figure 53 and make sure the
host, switch, and servers can reach each other.
• Configure the RADIUS server properly to provide authentication and accounting functions.
• For re-DHCP portal authentication, configure a public address pool (20.20.20.0/24) and a
private address pool (10.0.0.0/24) on the DHCP server. (Details not shown.)
• For re-DHCP portal authentication:
ï‚¡ The switch must be configured as a DHCP relay agent.
ï‚¡ The portal-enabled interface must be configured with a primary IP address (a public IP
address) and a secondary IP address (a private IP address).
For information about DHCP relay agent configuration, see Layer 3—IP Services Configuration
Guide.
• Make sure the IP address of the portal device added on the portal server is the public IP
address (20.20.20.1) of the switch's interface connecting the host. The private IP address range
for the IP address group associated with the portal device is the private subnet 10.0.0.0/24
where the host resides. The public IP address range for the IP address group is the public
subnet 20.20.20.0/24.
Configuration procedure
Perform the following tasks on the switch.
1. Configure a RADIUS scheme:
# Create a RADIUS scheme named rs1 and enter its view.
<Switch> system-view
[Switch] radius scheme rs1
# Specify the primary authentication server and primary accounting server, and configure the
keys for communication with the servers.
[Switch-radius-rs1] primary authentication 192.168.0.113
[Switch-radius-rs1] primary accounting 192.168.0.113
[Switch-radius-rs1] key authentication simple radius
[Switch-radius-rs1] key accounting simple radius
# Exclude the ISP domain name from the username sent to the RADIUS server.
[Switch-radius-rs1] user-name-format without-domain
[Switch-radius-rs1] quit
# Enable RADIUS session control.
[Switch] radius session-control enable
2. Configure an authentication domain:
# Create an ISP domain named dm1 and enter its view.
[Switch] domain dm1
# Configure AAA methods for the ISP domain.
[Switch-isp-dm1] authentication portal radius-scheme rs1
[Switch-isp-dm1] authorization portal radius-scheme rs1
[Switch-isp-dm1] accounting portal radius-scheme rs1
[Switch-isp-dm1] quit
# Configure domain dm1 as the default ISP domain. If a user enters the username without the
ISP domain name at login, the authentication and accounting methods of the default domain
are used for the user.
[Switch] domain default enable dm1
3. Configure DHCP relay and authorized ARP:
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