3Com OfficeConnect 3CP4144, Cli User'S Manual

Page: 47 / 144

DHCP 6-11
Remember to save your configuration using the save all command before
rebooting your OfficeConnect Remote 812 so that your changes will be written to
permanent FLASH memory.
Monitoring NAT The NAT configuration is displayed when viewing the remote site configuration
using the
show vc command. The Network Address Translation field should
indicate “enabled”. The NAT Default Address field will contain 0.0.0.0 if the
option is disabled or a valid workstation IP address on the local LAN if it is enabled.
The static port definitions are appended to the display only when configured.
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When the remote site is active, current port mappings are displayed with the
following command:
list nat vc <vc name> port
DHCP
Dynamic Host Configuration Protocol (DHCP) is designed to provide a centralized
approach for configuration of IP addresses and parameters.
When a workstation is configured for automatic assignment of IP addresses, it
broadcasts a request out on the LAN. The DHCP Server responds with an IP
address for the workstation, the domain name, and the IP addresses of the default
router, two DNS Servers, and two WINS Servers.
The assignment of an IP address to the workstation is for a specified period of
time, referred to as the lease period. Before the lease is set to expire, the
workstation will send a request to the server to extend the lease period. The server
maintains a list of assigned IP addresses and the duration period of the leases.
When a lease expires, the IP address can be reassigned to another workstation.
The OfficeConnect Remote 812 can be configured to support up to 40
workstations on the local LAN. In addition, the OfficeConnect Remote 812 can be
configured to be a DHCP Relay. When enabled, the Relay will process the
broadcast request from the local workstation and send it to one or two remote
DHCP servers. The response from the remote DHCP servers is processed and
forwarded to the local workstation.
Remember to save your configuration using the save all command before
rebooting your OfficeConnect Remote 812 so that your changes will be written to
permanent FLASH memory.
Configuring the DHCP
Mode
The OfficeConnect Remote 812 has three DHCP modes: Server, Relay and Disable.
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To configure the mode, use the following command:
set dhcp mode [SERVER | RELAY | DISABLE]
Configuring the DHCP
Server
The OfficeConnect Remote 812’s DHCP Server has the following fields that will
need to be configured:
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Hostname
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Domain Name