Use Of Dhcp Option 50 To Request A Specific Ip Address - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
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Use of DHCP Option 50 to Request a Specific IP Address

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324
Specify the pool matching methods in the order in which the router performs the
2.
methods. You can specify the methods in any order. All methods are optional—the
router uses the
ip-address-first
Configure the router to use the
[edit system services dhcp-local-server pool-match-order]
user@host# set ip-address-first
(IPv4 address-assignment pools only) Specify the
[edit system services dhcp-local-server pool-match-order]
user@host# set option-82
(IPv4 address-assignment pools only) Specify the
method.
[edit system services dhcp-local-server pool-match-order]
user@host# set option-82-strict
Extended DHCP Local Server Overview on page 315
DHCP Local Server Handling of Client Information Request Messages on page 335
DHCP Duplicate Client Differentiation Using Client Subinterface Overview on page 362
Address-Assignment Pools Overview on page 317
Configuring Address-Assignment Pools on page 318
Configuring an Address-Assignment Pool Name and Addresses on page 319
Configuring a Named Address Range for Dynamic Address Assignment on page 320
Configuring Static Address Assignment on page 320
Configuring DHCP Client-Specific Attributes on page 325
DHCP Attributes for Address-Assignment Pools on page 321
Subscriber management enables you to specify that DHCP local server assign a particular
address to a client. For example, if a client is disconnected, you might use this capability
to assign the same address that the client was using prior to being disconnected. If the
requested address is available, DHCP assigns it to the client. If the address is unavailable,
the DHCP local server offers another address, based on the address allocation process.
DHCP local server supports the specific address request feature. DHCP local server uses
DHCP option 50 in DHCP DISCOVER messages to request a particular address.
Extended DHCP Local Server Overview on page 315
DHCP Local Server Handling of Client Information Request Messages on page 335
method by default.
ip-address-first method.
option-82
option-82-strict
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matching method.
matching