3com 8807 User Guide

C

HAPTER

 27: P

ORTAL

 C

ONFIGURATION

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When the Portal ReDHCP authentication method is adopted, the switch must 
be configured as DHCP Relay instead of DHCP Server. Additionally, the master 
IP address ( public address ) and the slave IP address (private IP address) must be 
configured on the Portal-enabled VLAN interface.

# Set the Portal to run in the ReDHCP authentication method.

[SW8800] portal method redhcp 

# Configure the DHCP server.

[SW8800] dhcp server ip-pool dhcp_ip

 

[3Com-dhcp-dhcp_ip] network 172.21.0.0 mask 255.255.0.0

 

[3Com-dhcp-dhcp_ip] gateway-list 172.21.1.1

 

[3Com-dhcp-dhcp_ip] quit

 

[SW8800] dhcp server ip-pool dhcp_ip2

 

[3Com-dhcp-dhcp_ip2] network 18.21.0.0 mask 255.255.0.0

 

[3Com-dhcp-dhcp_ip2] gateway-list 18.21.1.1

 

[3Com-dhcp-dhcp_ip2] quit 

# Configure VLAN 3

[SW8800] vlan 3

 

[3Com-vlan3] port ethernet 2/1/3

 

[SW8800] interface vlan-interface 3

 

[3Com-Vlan-interface3] ip address 172.21.1.1 255.255.0.0

 

[3Com-Vlan-interface3] ip address 18.21.1.1 255.255.0.0 sub 

# Configure the DHCP Relay address check (ip relay address must be specified as a 
VALN interface in Up state).

[3Com-Vlan-interface3] ip relay address 9.0.0.1

 

[3Com-Vlan-interface3] dhcp select relay

 

[3Com-Vlan-interface3] dhcp relay security address-check enable 

# Enable Portal authentication function on VLAN-interface 3. The name of the 
Portal server is newp. Refer to “Portal Direct Authentication Method 
Configuration Example” for related configurations.

[3Com-Vlan-interface3] portal newp 

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The user PC2 accesses the switch through a router. Layer 3 Portal 
authentication method is enabled on the switch. User PC2 can access external 
networks after passing Portal authentication.