Netgear XCM8810 - 8800 SERIES 10-SLOT CHASSIS SWITCH ユーザーズマニュアル

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  Chapter 16.  Network Login    
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NETGEAR 8800 User Manual 
To display the status of dynamic VLAN configuration on the switch, use the following 
command:
show netlogin
 
The switch displays the current state of dynamic VLAN creation (enabled or disabled) and the 
uplink port(s) associated with the dynamic VLAN. 
Configuring Network Login Port Restart
You can configure network login to restart specific network-login-enabled ports when the last 
authenticated supplicant unauthenticates, regardless of the configured authentication 
methods on the port. This feature, known as network login port restart, is available with all 
network login authentication methods although is most practical with web-based network 
login. This section describes how this feature behaves with web-based network login; 
MAC-based and 802.1x network login do not experience any differences in behavior if you 
enable network login port restart.
Currently with web-based network login, if you have an authenticated supplicant and log out 
of the network, you must manually release the IP address allocated to you by the Dynamic 
Host Control Protocol (DHCP) server. The DHCP server dynamically manages and allocates 
IP addresses to supplicants. When a supplicant accesses the network, the DHCP server 
provides an IP address to that supplicant. DHCP cannot renegotiate their leases, which is 
why you must manually release the IP address. 
For example, if the idle timer expires on the switch, the switch disconnects your network 
session. If this occurs, it may be unclear why you are unable to access the network. After you 
manually renew the IP address, you are redirected to the network login login page and can 
log back into the network. To solve this situation in a single supplicant per port environment, 
port restart triggers the DHCP client on the PC to restart the DHCP address assignment 
process. 
Guidelines for Using Network Login Port Restart
Configure network login port restart on ports with directly attached supplicants. If you use a 
hub to connect multiple supplicants, only the last unauthenticated supplicant causes the port 
to restart. Although the hub does not inflict harm to your network, in this situation, the 
previously unauthenticated supplicants do not get the benefit of the port restart configuration. 
Enabling Network Login Port Restart
To enable network login port restart, use the following command:
configure netlogin ports [all | <port_list>] restart
Disabling Network Login Port Restart
To disable network login port restart, use the following command:
configure netlogin ports [all | <port_list>] no-restart