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server-identifier
Syntax
server-identifier address;
Hierarchy Level
[edit system services dhcp],
[edit system services dhcp pool],
[edit system services dhcp static-binding]
Release Information
Statement introduced before Junos OS Release 7.4.
Statement introduced in Junos OS Release 9.0 for EX Series switches.
Description
For J Series Services Routers and EX Series switches only. Configure a server identifier.
The identifier can be used to identify a DHCP server in a DHCP message. It can also be
used as a destination address from clients to servers (for example, when the boot file is
set, but not the boot server).
Servers include the server identifier in
DHCPOFFER
messages so that clients can
distinguish between multiple lease offers. Clients include the server identifier in
DHCPREQUEST
messages to select a lease and indicate which offer is accepted from
multiple lease offers. Also, clients can use the server identifier to send unicast request
messages to specific DHCP servers to renew a current lease.
This address must be a manually assigned, static IP address. The server cannot send a
request and receive an IP address from itself or another DHCP server.
Default
If no server identifier is set, the DHCP server sets the server identifier based on the primary
interface address used by the server to receive a client request. For example, if the client
sends a DHCP request and the server receives it on
fe-0/0/0
and the primary interface
address is
1.1.1.1
, then the server identifier is set to
1.1.1.1
.
Options
address
—IPv4 address of the server. This address must be accessible by all clients served
within a specified range of addresses (based on an address pool or static binding).
Required Privilege
Level
system—To view this statement in the configuration.
system-control—To add this statement to the configuration.
Related
Documentation
•
Configuring the Router, Switch, or Interface to Act as a DHCP Server on J Series Services
Routers and EX Series Ethernet Switches
Copyright © 2010, Juniper Networks, Inc.
594
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...