ii
Configuring ARP direct route advertisement ················································· 23
Overview ·························································································································································· 23
Configuration procedure ·································································································································· 23
Configuring IP addressing ············································································· 24
Overview ·························································································································································· 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 guidelines ··························································································································· 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
Overview ·························································································································································· 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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