Cisco Systems OL-6426-02 Benutzerhandbuch

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5-2
Book Title
OL-xxxxx-xx
Chapter 5      Configuring a LAN with DHCP and VLANs
  Configure DHCP
Note
The procedures in this chapter assume you have already configured basic router features as well as 
PPPoE or PPPoA with NAT. If you have not performed these configurations tasks, see 
 
 as appropriate for your router. See the 
to assign an IP address to the ports.
Configure DHCP
Perform these steps to configure your router for DHCP operation, beginning in global configuration 
mode:
Command
Purpose
Step 1
ip domain name name
Example:
Router(config)# ip domain name smallbiz.com
Router(config)# 
Identifies the default domain that the router uses to 
complete unqualified hostnames (names without a 
dotted-decimal domain name).
Step 2
ip name-server server-address1 
[server-address2...server-address6]
Example:
Router(config)# ip name-server 192.168.11.12
Router(config)# 
Specifies the address of one or more Domain 
Name System (DNS) servers to use for name and 
address resolution.
Step 3
ip dhcp excluded-address low-address 
[high-address]
 
Example:
Router(config)# ip dhcp excluded-address 
192.168.9.0
Specifies IP addresses that the DHCP server 
should not assign to DHCP clients. In this 
example, we are excluding the router address.
Step 4
ip dhcp pool name
Example:
Router(config)# ip dhcp pool dpool1
Router(config-dhcp)# 
Creates a DHCP address pool on the router and 
enters DHCP pool configuration mode. The name 
argument can be a string or an integer.
Step 5
network network-number [mask | prefix-length]
Example:
Router(config-dhcp)# network 10.10.0.0 
255.255.255.0
Router(config-dhcp)# 
Defines subnet number (IP) address for the DHCP 
address pool, optionally including the mask.