Configure DHCP server on Cisco router

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Following have been tested on Cisco CSR V1000 virtual router to offer DHCP IPs to clients:

1. To configure DHCP server using Cisco router first go to config t

   config t

2. Create pool for DHCP

   ip dhcp pool <name>

   Such as 'ip dhcp pool host-vtep-dhcp-pool'

3. Specify the network which will be served by this DHCP

   network <network-number> <mask-or-prefix>

   This requires the DHCP request for above networks to come to router via ip-helper-address or router should have interface on those networks

   Example 'network 10.1.1.0/24'

4. Configure parameters for the clients such as domain-name, dns server address, gateway etc.

   domain-name <domain>
   dns-server <address [address2 ... address8]>
   default-router <address [address2 ... address8]>
   lease {days [hours] [minutes] | infinite}

   Example configuration

   domain-name example.com
   dns-server 10.1.1.2 10.1.1.3
   default-router 10.1.1.1
   lease 7

5. After this connect with a client and try to obtain IP address via DHCP. If DHCP works properly, we can check DHCP bindings on router using:

   show ip dhcp binding

Refer:

• https://www.cisco.com/en/US/docs/ios/12_4t/ip_addr/configuration/guide/htdhcpsv.html

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