Configuration of the cisco dhcp server and DHCP relay proxy (shown in the figure below)

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DHCPserver # showrun

HostnameDHCPserver

Ipdhcpexcluded-address192.168.2.1

Ipdhcpexcluded-address192.168.2.254

Ipdhcpexcluded-address192.168.5.2

Ipdhcpexcluded-address192.168.5.254

Ipdhcpexcluded-address192.168.3.1

Ipdhcpexcluded-address192.168.3.254

Ipdhcpexcluded-address192.168.4.2

Ipdhcpexcluded-address192.168.4.254

Ipdhcppoolupleft

Network192.168.2.0255.255.255.0

Default-router192.168.2.1

Dns-server192.168.2.254

Ipdhcppoolupright

Network192.168.5.0255.255.255.0

Default-router192.168.5.2

Dns-server192.168.5.254

Ipdhcppooldownleft

Network192.168.3.0255.255.255.0

Default-router192.168.3.1

Dns-server192.168.3.254

Ipdhcppooldownright

Network192.168.4.0255.255.255.0

Default-router192.168.4.2

Dns-server192.168.4.254

Noipdomain-lookup

InterfaceFastEthernet0/0

Ipaddress192.168.2.1255.255.255.0

InterfaceFastEthernet1/0

Ipaddress192.168.3.1255.255.255.0

Interfaceserial/0

Ipaddress192.168.1.1255.255.255.0

Clockrate9600

Routerrip

Network192.168.1.0

Network192.168.2.0

Network192.168.3.0

DHCPrelay #Showrun

HostnameDHCPrelay

Noipdomain-lookup

InterfaceFastEthernet0/0

Ipaddress192.168.5.2255.255.255.0

Iphelper-address192.168.1.1

InterfaceFastEthernet1/0

Ipaddress192.168.4.2255.255.255.0

Iphelper-address192.168.1.1

Interfaceserial/0

Ipaddress192.168.1.22.16255.255.0

Routerrip

Network192.168.1.0

Network192.168.4.0

Network192.168.5.0

This article is from the "Winter" blog, please be sure to keep this source http://kety0120.blog.51cto.com/2541539/1297933