3Com SuperStack 4 Configuration Manual page 81

BOOTP Client
Configuration
Overview of BOOTP
Client
BOOTP Client
Configuration
Displaying and
Debugging BOOTP
Client
A BOOTP client can request the server to allocate an IP address to it using BOOTP
(bootstrap protocol). These two major processes are included on the BOOTP client:
Sending BOOTP Request message to the server
■
Processing BOOTP Response message returned from the server
■
In obtaining an IP address using BOOTP, the BOOTP client sends the server the
BOOTP Request message. Upon receiving the request message, the server returns
the BOOTP Response message. The BOOTP client can then obtain the allocated IP
address from the received response message.
The BOOTP message is based on UDP, so a retransmission mechanism in the event
of timeout is used to guarantee its reliable transmission. The BOOTP client also
starts a retransmission timer when it sends the request message to the server. If
the timer expires before the return of the response message from the server, the
request message will be retransmitted. The retransmission occurs every five
seconds and the maximum number of retransmissions is three, that is, the
message shall not be retransmitted after the third time.
BOOTP client is described in the following section.
Configuring a VLAN Interface to Obtain the IP Address Using BOOTP
Perform the following configuration in VLAN Interface View.
Table 87 Configuring a VLAN Interface to Obtain the IP Address Using BOOTP
Operation
Configure VLAN interface to obtain an IP address
using BOOTP
Remove the configuration
By default, the VLAN interface cannot use BOOTP to get an IP address.
For further information on IP Address configuration, please refer to the Getting
Started Guide that accompanies your Switch.
After the above configuration, enter the
the running of the BOOTP client configuration and to verify the effect of the
configuration.
Enter the command in User View to debug BOOTP client.
debugging
Table 88 Displaying and Debugging BOOTP Client
Operation
Disable/enable hot backup debugging of BOOTP
client
BOOTP Client Configuration
Command
ip address bootp-alloc
undo ip address bootp-alloc
command in any view to display
display
Command
[ undo ] debugging dhcp xrn xha
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