Contents
50
Software Configuration Guide—Release IOS XE 3.9.xE and IOS 15.2(5)Ex
DHCP Server Address Allocation Using Option 82 59-3
Disabling Conflict Logging 59-4
DHCP Address Pools 59-5
DHCP Address Pool with Secondary Subnets 59-5
Manual Bindings 59-6
DHCP Static Mapping 59-7
DHCP Server Operation 59-8
Static Route with the Next-Hop Dynamically Obtained Through DHCP 59-9
How to Configure the Cisco IOS DHCP Server 59-9
Configuring a DHCP Database Agent or Disabling Conflict Logging 59-10
Excluding IP Addresses 59-10
Configuring DHCP Address Pools 59-10
Configuring a DHCP Address Pool 59-11
Configuring a DHCP Address Pool with Secondary Subnets 59-13
Troubleshooting Tips 59-15
Verifying the DHCP Address Pool Configuration 59-16
Configuring Manual Bindings 59-17
Configuring the DHCP Server to Read a Static Mapping Text File 59-18
Customizing DHCP Server Operation 59-19
Configuring a Remote Device to Import DHCP Server Options from a Central DHCP Server 59-19
Configuring the Central DHCP Server to Update DHCP Options 59-20
Configuring the Remote Device to Import DHCP Options 59-20
Configuring DHCP Address Allocation Using Option 82 59-21
Enabling Option 82 for DHCP Address Allocation 59-21
Defining the DHCP Class and Relay Agent Information Patterns 59-21
Defining the DHCP Address Pool 59-22
Configuring Static Route with the Next-Hop Dynamically Obtained Through DHCP 59-23
Clearing DHCP Server Variables 59-24
Configuration Examples for the Cisco IOS DHCP Server 59-24
Example: Configuring a DHCP Database Agent or Disabling Conflict Logging 59-24
Example: Excluding IP Addresses 59-24
Example: Configuring a DHCP Address Pool 59-25
Example: Configuring a DHCP Address Pool with Multiple Disjoint Subnets 59-26
Example: Configuring Manual Bindings 59-27
Example: Configuring Static Mapping 59-28
Example: Customizing DHCP Server Operation 59-29
Example: Configuring the Option to Ignore all BOOTP Requests 59-29
Example: Configuring a Remote Device to Import DHCP Server Options from a Central DHCP
Server
59-30
Example: Importing DHCP Options 59-30