Juniper ACX1000 Configuration Manual page 381

Copyright © 2017, Juniper Networks, Inc.
In the default
ip-address-first
to use by matching the IP address in the client DHCP request with the network address
of the address-assignment pool. If the client request contains the gateway IP address
( ), the local server matches the
giaddr
If there is no giaddr in the request, then the DHCP local server matches the IP address of
the receiving interface to the address of the address-assignment pool.
For IPv4 address-assignment pools, you can optionally configure the extended DHCP
local server to match the DHCP relay agent information option (option 82) in the client
DHCP packets to a named range in the address-assignment pool used for the client.
Named ranges are subsets within the overall address-assignment pool address range,
which you can configure when you create the address-assignment pool.
NOTE: To use the DHCP local server option 82 matching feature with an IPv4
address-assignment pool, you must ensure that the
included in the
You can optionally include the
for matching the address-assignment pool. If you include the
the extended DHCP local server applies the
then uses the option-82 method to select the address-assignment pool. The
method must be specified before the
ip-address-first
list.
pool-match-order
NOTE: If the
option-82-strict
list, any DHCP discover packet with either unknown or no
information will be denied with an IP address. A DHCP client is allocated with
an IP address only when the DHCP packet matches the
configured as a part of the
match for specific
pool configuration, the
and IP addresses are allocated by the DHCP local server by matching the
subnet of the incoming interface.
To configure the matching order the extended DHCP local server uses to determine the
address-assignment pool used for a client:
Access the
pool-match-order
1.
[edit system services dhcp-local-server]
user@host# edit pool-match-order
Chapter 10: Configuring DHCP Client and DHCP Server
matching, the server selects the address-assignment pool
to the address-assignment pool's address.
giaddr
dhcp-attributes statement for the address-assignment pool.
option-82-strict method in the
ip-address-first
method is configured in the
dhcp-attributes
option-82 value is not configured as a part of the selected
match order option will have no effect
option-82-strict
configuration.
statement is
option-82
pool-match-order statement
method,
option-82-strict
matching method first and
method in the
option-82-strict
pool-match-order
option-82
information
option-82
statement. If
dhcp-attributes
to
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