351# Configure DHCP relay.[Router] dhcp enable[Router] dhcp relay client-information record[Router] interface gigabitethernet 1/0/2[Router–GigabitEthernet1/0/2] ip address 20.20.20.1 255.255.255.0[Router–GigabitEthernet1/0/2] ip address 10.0.0.1 255.255.255.0 sub[Router-GigabitEthernet1/0/2] dhcp select relay[Router-GigabitEthernet1/0/2] dhcp relay server-address 192.168.0.112# Enable authorized ARP.[Router-GigabitEthernet1/0/2] arp authorized enable[Router-GigabitEthernet1/0/2] quit5. Configure portal authentication:# Configure a portal authentication server.[Router] portal server newpt[Router-portal-server-newpt] ip 192.168.0.111 key simple portal[Router-portal-server-newpt] port 50100[Router-portal-server-newpt] quit# Configure a portal Web server.[Router] portal web-server newpt[Router-portal-websvr-newpt] url http://192.168.0.111:8080/portal[Router-portal-websvr-newpt] quit# Enable re-DHCP portal authentication on GigabitEthernet 1/0/2.[Router] interface gigabitethernet 1/0/2[Router-GigabitEthernet1/0/2] portal enable method redhcp# Reference the portal Web server newpt on GigabitEthernet 1/0/2.[Router–GigabitEthernet1/0/2] portal apply web-server newpt# Configure the BAS-IP as 20.20.20.1 for portal packets sent from GigabitEthernet 1/0/2 to theportal authentication server.[Router–GigabitEthernet1/0/2] portal bas-ip 20.20.20.1[Router–GigabitEthernet1/0/2] quitVerifying the configuration# Verify that the portal configuration has taken effect.[Router] display portal interface gigabitethernet 1/0/2Portal information of GigabitEthernet1/0/2NAS-ID profile: Not configuredAuthorization : Strict checkingACL : DisabledUser profile : DisabledIPv4:Portal status: EnabledPortal authentication method: RedhcpPortal web server: newptAuthentication domain: Not configuredPre-auth policy: Not configuredUser-dhcp-only: DisabledPre-auth IP pool: Not configuredMax Portal users: Not configured
