DHCP relay scenario 1 (IPv4)

In this scenario, DHCP relay on the server enables two hosts to obtain their IP addresses from a DHCP server on a different subnet. The physical topology of the network looks like this:

Procedure
  1. DHCP relay is enabled by default. If it was previously disabled, enable it.
    switch# config
    switch(config)# dhcp-relay
  2. Define an IPv4 helper address on interfaces 1/1/1 and 1/1/2 .
    switch(config)# interface 1/1/1
    switch(config-if)# ip address 192.168.2.11/24
    switch(config-if)# ip helper-address 192.168.1.1
    switch(config-if)# interface 1/1/2
    switch(config-if)# ip address 192.168.2.12/24
    switch(config-if)# ip helper-address 192.168.1.1
    switch(config-if)# quit
  3. Verify DHCP relay configuration.
    switch# show dhcp-relay
     DHCP Relay Agent                 : Enabled
     DHCP Request Hop Count Increment : Disabled
     Option 82                        : Disabled
     Response Validation              : Disabled
     Option 82 Handle Policy          : replace
     Remote ID                        : mac
    
     DHCP Relay Statistics:
    
      Valid Requests Dropped Requests Valid Responses Dropped Responses
      -------------- ---------------- --------------- -----------------
      60             10               60              10
    
     DHCP Relay Option 82 Statistics:
    
      Valid Requests Dropped Requests Valid Responses Dropped Responses
      -------------- ---------------- --------------- -----------------
      0              0                0               0
    switch# show ip helper-address
    IP Helper Addresses 
    
    Interface: 1/1/1 
    IP Helper Address 
    ----------------- 
    192.169.1.1 
    
    Interface: 1/1/2 
    IP Helper Address 
    ----------------- 
    192.169.1.1