3com 3031 Instruccion De Instalación
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Configuring DHCP Server
375
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Defining allocation mode of DHCP address pool
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Excluding IP address from auto allocation
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Defining IP address lease expiry limit
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Configuring domain name for DHCP client
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Configuring DNS (Domain Name Server) IP address for DHCP client
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Configuring NetBIOS IP address for DHCP client
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Defining NetBIOS node type for DHCP client
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Configuring DHCP customization items
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Configuring egress gateway router for DHCP client
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Configuring ping packet transfer in DHCP server
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Configuring DHCP data storage into hard disk
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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.
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.
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
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 address pool view
dhcp server ip-pool pool-name
Deletes DHCP address pool
undo dhcp server ip-pool pool-name