Displaying Dhcp/Bootp Client Configuration; Dhcp Client Configuration Example - 3Com 4210 PWR Configuration Manual

288 C 26: DHCP/BOOTP C
HAPTER
Displaying
DHCP/BOOTP Client
Configuration
DHCP Client
Configuration
Example
Network requirements
C
LIENT ONFIGURATION
Table 215 Configure a DHCP/BOOTP client
Operation
Configure the VLAN interface to
obtain IP address through DHCP
or BOOTP
n
Currently, the Switch 4210 functioning as the DHCP client can use an IP address
for 24 days at most. That is, the DHCP client can obtain an address lease for no
more than 24 days even though the DHCP server offers a longer lease period.
n
To improve security and avoid malicious attack to the unused SOCKETs, the Switch
4210 provides the following functions:
UDP 67 and UDP 68 ports used by DHCP are enabled only when DHCP is
■
enabled.
UDP 67 and UDP 68 ports are disabled when DHCP is disabled.
■
The specific implementation is:
Using the ip address dhcp-alloc command enables the DHCP client, and UDP
■
port 68.
Using the undo ip address dhcp-alloc command disables the DHCP client, and
■
UDP port 68.
Operation
Display related information on a
DHCP client
Display related information on a
BOOTP client
Using DHCP, VLAN-interface 1 of Switch B is connected to the LAN to obtain an IP
address from the DHCP server.
Command
ip address { bootp-alloc
| dhcp-alloc }
Command
display dhcp client [ verbose
]
display bootp client [
interface Vlan-interface
vlan-id ]
Description
Required
By default, no IP address is
configured for the VLAN
interface.
Description
Optional
Available in any view