Overview ·························································································································································· 23

Configuration procedure ·································································································································· 23

Configuring IP addressing ············································································· 24

IP address classes ··································································································································· 24

Special IP addresses ······························································································································· 25

Subnetting and masking ··························································································································· 25

Assigning an IP address to an interface ·········································································································· 25

Configuration guidelines ··························································································································· 26

Configuration procedure ··························································································································· 26

Configuring IP unnumbered ····························································································································· 26

Configuration prerequisites ······················································································································ 27

Configuration procedure ··························································································································· 27

Displaying and maintaining IP addressing ······································································································· 27

Configuration examples ··································································································································· 27

IP address configuration example ············································································································ 27

IP unnumbered configuration example ···································································································· 29

DHCP overview ····························································································· 31

DHCP address allocation ································································································································· 31

Allocation mechanisms ···························································································································· 31

IP address allocation process ·················································································································· 32

IP address lease extension ······················································································································ 32

DHCP message format ···································································································································· 33

DHCP options ·················································································································································· 34

Common DHCP options ··························································································································· 34

Custom DHCP options ····························································································································· 34

Protocols and standards ·································································································································· 36

Configuring the DHCP server ······································································· 37

DHCP address pool ································································································································· 37

IP address allocation sequence ··············································································································· 39

DHCP server configuration task list ················································································································· 39

Configuring an address pool on the DHCP server ··························································································· 40

Configuration task list ······························································································································· 40

Creating a DHCP address pool ················································································································ 40

Specifying IP address ranges for a DHCP address pool ········································································· 40

Specifying gateways for DHCP clients ····································································································· 43

Specifying a domain name suffix for DHCP clients ·················································································· 44

Specifying DNS servers for DHCP clients ································································································ 44

Specifying WINS servers and NetBIOS node type for DHCP clients ······················································· 44

Specifying BIMS server for DHCP clients ································································································ 45

Specifying the configuration file for DHCP client auto-configuration ························································ 45

Specifying a server for DHCP clients ······································································································· 46

Configuring Option 184 parameters for DHCP clients ············································································· 46

Customizing DHCP options ······················································································································ 47

Configuring the DHCP user class whitelist ······························································································· 48

Enabling DHCP ················································································································································ 49

Enabling the DHCP server on an interface ······································································································ 49

Applying an address pool on an interface ········································································································ 49

Configuring IP address conflict detection ········································································································· 50

Enabling handling of Option 82 ························································································································ 50

Configuring DHCP server compatibility ············································································································ 51

Configuring the DHCP server to broadcast all responses ········································································ 51

Configure the DHCP server to ignore BOOTP requests ·········································································· 51

Configuring the DHCP server to send BOOTP responses in RFC 1048 format ······································ 52

Setting the DSCP value for DHCP packets sent by the DHCP server ····························································· 52

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