Router configuration DHCP server instance resolution

Router configuration requirements:

Enterprise internal computer usageDHCPTo obtain the IP address. Set the DHCP address to 192.168.1.0/24. Set the default gateway to 192.168.1.1, the domain name to ewao.cn, And the DNS service to 61.128.114.20.the IP address is valid for 2 days.

The router configuration is as follows:

 
 

  
  
Router (config) # int f0/0
  
  
Router (config-if) # ip add 192.168.1.1 255.255.255.0
  
  
Router (config-if) # no sh
  
  
Router (config-if) # exit
  
  
Router (config) # ip dhcp excluded-address 192.168.1.1 // you need to exclude the gateway address of the Router interface
  
  
Router (config) # ip dhcp pool DHCP // create a DHCP pool
  
  
Router (dhcp-config) # network 192.168.1.0/24 // declares the allocable network segment
  
  
Router (dhcp-config) # default-Router 192.168.1.1 // sets the default gateway of the client.
  
  
Router (dhcp-config) # dns-server 61.128.114.133 // set the client DNS address
  
  
Router (dhcp-config) # lease 2 // address lease period
  
  
Router (dhcp-config) # domain-name ewao.cn // domain of the Client
  
  
Router (dhcp-config) # end
 
 

Client Configuration:

Vroipv6 configuration-IPV6 DHCP Server Configuration:

 
 

  
  
Router(config)#ipv6 unicast-routing  
  
  
Router(config)#ipv6 cef  
  
  
Router(config)#ipv6 dhcp pool v6  
  
  
Router(config-dhcp)# prefix-delegation pool v6pool  
  
  
Router(config-dhcp)# dns-server 2001:470:20::2  
  
  
Router(config-dhcp)# domain-name ewao.cn  
  
  
Router(config-dhcp)#end 
 
 

The IPV6 technology also needs to be configured on the client.

Verify the vro Configuration:

 
 

  
  
Router#show ip dhcp database  
  
  
Router#show ip dhcp binding  
  
  
Bindings from all pools not associated with VRF:  
  
  
IP address Client-ID/ Lease expiration Type  
  
  
Hardware address/  
  
  
User name  
  
  
192.168.1.214 0100.e04c.3900.d1 Mar 07 2002 11:39 PM Automatic  
  
  
192.168.1.215 01f0.def1.16c1.11 Mar 07 2002 07:27 PM Automatic  
  
  
192.168.1.216 0100.26c7.6a28.1a Mar 07 2002 08:07 PM Automatic  
  
  
192.168.1.219 01c4.4619.75b9.c0 Mar 07 2002 04:52 PM Automatic  
  
  
192.168.1.221 0100.3018.b003.f1 Mar 07 2002 05:22 PM Automatic  
  
  
192.168.1.222 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0000.0000.  
  
  
00  
  
  
192.168.1.223 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0001.0000.  
  
  
00  
  
  
192.168.1.224 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0002.0000.  
  
  
00  
  
  
192.168.1.225 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0003.0000.  
  
  
00  
  
  
192.168.1.226 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0004.0000.  
  
  
00  
  
  
192.168.1.227 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0005.0000.  
  
  
00  
  
  
192.168.1.228 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0006.0000.  
  
  
00  
  
  
192.168.1.229 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0007.0000.  
  
  
00  
  
  
192.168.1.230 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0008.0000.  
  
  
00  
  
  
192.168.1.231 0152.4153.2000.0c29. Mar 07 2002 04:48 PM Automatic  
  
  
7ded.8700.0009.0000.  
  
  
00  
  
  
192.168.1.232 0100.242c.54b5.9b Mar 07 2002 05:49 PM Automatic  
  
  
192.168.1.235 018c.a982.9e8e.f8 Mar 08 2002 12:42 AM Automatic  
  
  
192.168.1.236 01f0.def1.6045.74 Mar 07 2002 06:41 PM Automatic  
  
  
192.168.1.241 0100.1f3c.0dee.82 Mar 08 2002 12:33 AM Automatic  
  
  
192.168.1.242 0100.2710.f29b.20 Mar 08 2002 01:48 AM Automatic  
  
  
192.168.1.244 0100.1b24.79ac.bc Mar 07 2002 10:56 PM Automatic  
  
  
192.168.1.246 0188.ae1d.7426.51 Mar 07 2002 09:59 PM Automatic  
  
  
192.168.1.249 0100.26c7.43ff.60 Mar 08 2002 01:19 AM Automatic 
 
 

Because the tunnel technology from IPv4 to IPv6 is enabled for the device we tested, that is, the network that can access IPv6 can also access IPv4 networks at the same time. Therefore, when show ip dhcp binding, some IPv6 addresses are allocated.

Router configuration troubleshooting:

 
 

  
  
> Ipconfig... Display Information
  
  
> Ipconfig/all... Show Details
  
  
> Ipconfig/renew... Update all adapters
  
  
> Ipconfig/renew EL *... Update all connections whose names start with EL
  
  
> Ipconfig/release * Con *... Release all matched connections,
  
  
For example, "Local Area Connection 1" or
  
  
"Local Area Connection 2 ″
  
  
> Ipconfig/allcompartments... Show information about all segments
  
  
> Ipconfig/allcompartments/all... Show Details about all segments
 
 

The whole process of vrodhcp configuration is described above. About DHCP server configuration, this is a classic and common configuration in vro configuration, so the network administrator must learn it.