162
{ IP address: 192.168.0.111
{ Key: portal in plain text
{ Port number: 50100
{ URL: http://192.168.0.111:8080/portal
[Switch] portal server newpt ip 192.168.0.111 key simple portal port 50100
url http://192.168.0.111:8080/portal
# Configure the switch as a DHCP relay agent, and enable the IP address check function.
[Switch] dhcp enable
[Switch] dhcp relay server-group 0 ip 192.168.0.112
[Switch] interface vlan-interface 100
[Switch–Vlan-interface100] ip address 20.20.20.1 255.255.255.0
[Switch–Vlan-interface100] ip address 10.0.0.1 255.255.255.0 sub
[Switch-Vlan-interface100] dhcp select relay
[Switch-Vlan-interface100] dhcp relay server-select 0
[Switch-Vlan-interface100] dhcp relay address-check enable
# Enable re-DHCP portal authentication on the interface connecting the host.
[Switch–Vlan-interface100] portal server newpt method redhcp
[Switch–Vlan-interface100] quit
Configuring cross-subnet portal authentication with extended
functions
Network requirements
As shown in Figure 55:
• Switch A is configured for cross-subnet extended portal authentication. If the host fails security check
after passing identity authentication, the host can access only subnet 192.168.0.0/24. After
passing security check, the host can access Internet resources.
• The host accesses Switch A through Switch B.
• A RADIUS server serves as the authentication/accounting server.
Figure 55 Network diagram
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