3com S7906E Guide De Référence

 

3-3 

T1 will timeout in 1 day 11 hours 
58 minutes 52 seconds. 

How long the T1 (1/2 lease time) timer will timeout. 

 

ip address dhcp-alloc [ client-identifier mac interface-type interface-number ] 

Interface view 

2: System level 

client-identifier mac interface-type interface-number: Specifies the MAC address of an interface using 

which as the client ID to obtain an IP address. 

Use the ip address dhcp-alloc command to configure an interface to use DHCP for IP address 

acquisition. 

Use the undo ip address dhcp-alloc command to cancel an interface from using DHCP. 

By default, an interface does not use DHCP for IP address acquisition. 

Note that: 

z 

If no parameter is specified, the client uses a character string comprised of the current interface 

name and MAC address as its ID for address acquisition.  

z 

The DHCP client sends a DHCP-RELEASE message for releasing the IP address obtained via 

DHCP, if the interface of the client is down, the message cannot be sent. 

z 

For a sub interface that obtained an IP address via DHCP, using the shutdown command on its 

primary interface does not make the DHCP client send a DHCP-RELEASE message for releasing 

the sub interface’s IP address. 

# Configure VLAN-interface 1 to use DHCP for IP address acquisition. 

<Sysname> system-view 

[Sysname] interface vlan-interface 1 

[Sysname-Vlan-interface1] ip address dhcp-alloc