3com 3031 Instruccion De Instalación

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Configuring DHCP Server
375
Defining allocation mode of DHCP address pool
Excluding IP address from auto allocation 
Defining IP address lease expiry limit
Configuring domain name for DHCP client
Configuring DNS (Domain Name Server) IP address for DHCP client
Configuring NetBIOS IP address for DHCP client
Defining NetBIOS node type for DHCP client
Configuring DHCP customization items
Configuring egress gateway router for DHCP client
Configuring ping packet transfer in DHCP server
Configuring DHCP data storage into hard disk
Clearing DHCP information
Differences between global address pool and interface address pool: 
1) The global address pool is created with 
dhcp server ip-pool 
command in 
system view and it is effective in the entire router. 
2) The interface address pool is established automatically when the Ethernet 
interface is configured with valid unicast IP address and it is effective only in the 
interface. Its address segment range is the segment for the Ethernet interface. 
Adding Global DHCP 
Address Pool
DHCP server allocates IP addresses from the address pool. When DHCP client 
originates DHCP requests to DHCP server, the server will choose a proper address 
pool according to a certain algorithm and select a free IP address, which, along 
with other parameters (for example DNS IP address, address lease limit), is sent to 
the client. A DHCP server by far can be configured with 50 non-local address 
pools. 
The address pools in DHCP server is in tree structure: the native segment address 
as root, sub-net addresses as branch, addresses bound to the clients as leaf nodes. 
This structure guarantees configuration inheritance: the sub-net (son node) 
inherits the configurations of the native segment (father node); the client 
(grandson node) inherits the configurations of the sub-net. For those common 
parameters, for example domain name, you can just configure them at the native 
segment or sub-net. You can view the structure of the address pools with the 
display dhcp server tree
 command. The order for those address pools at the 
same level is defined by creation time. 
Perform the following in the System View. 
By default, no global DHCP address pool is created. 
Table 418   Adding global DHCP address pool
Operation
Command
Adds DHCP address pool or enter 
DHCP address pool view 
dhcp server ip-pool pool-name
Deletes DHCP address pool
undo dhcp server ip-pool pool-name