Configuring DHCP External Server to Uniquely Identify Clients with Duplicate MAC
Addresses
You can configure the DHCP external server application to use a combination of the
MAC address and giaddr to uniquely identify DHCP clients attached to the router.
This behavior is also referred to as
duplicate MAC mode
. By default, DHCP external
server uses only the MAC address to uniquely identify DHCP clients. The default
behavior is also referred to as
unique MAC mode
.
Enabling duplicate MAC mode is useful if you are using the DHCP external server
application to manage DHCP clients from multiple DHCP relays in network
environments where the same MAC address might be assigned to more than one
client. In such environments, DHCP external server must use a combination of the
MAC address and giaddr to uniquely identify the DHCP clients it manages.
Preserving the client’s dynamic subscriber interface is useful if deleting and re-creating
the dynamic subscriber interface might result in a service interruption.
To configure the DHCP external server application to use a combination of the MAC
address and giaddr to uniquely identify DHCP clients, also known as
enabling duplicate
MAC mode
:
■
Issue the
dhcp-external duplicate-mac-address
command from Global
Configuration mode:
host1:vr1(config)#
dhcp-external duplicate-mac-address
To restore the DHCP external server default behavior to use only the MAC address
to uniquely identify DHCP clients, also known as
enabling unique MAC mode
:
■
Issue the
no dhcp-external duplicate-mac-address
command from Global
Configuration mode:
host1:vr1(config)#
no dhcp-external duplicate-mac-address
NOTE:
Unlike other commands for configuring DHCP external server, the
dhcp-external duplicate-mac-address
command applies globally to all instances of
the DHCP external server application on the router, and is not issued on a per-VR
basis.
Related Topics
DHCP External Server Identification of Clients with Duplicate MAC Addresses
Overview on page 520
■
■
dhcp-external duplicate-mac-address
530
■
Configuring DHCP External Server to Uniquely Identify Clients with Duplicate MAC Addresses
JUNOSe 11.0.x Broadband Access Configuration Guide
Содержание JUNOSE 11.0.X MULTICAST ROUTING
Страница 6: ...vi...
Страница 28: ...xxviii Table of Contents JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 36: ...xxxvi List of Tables JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 42: ...2 Managing Remote Access JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 204: ...164 Managing RADIUS and TACACS JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 274: ...234 CLI Commands Used to Modify RADIUS Attributes JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 292: ...252 Monitoring RADIUS Relay Server JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 336: ...296 RADIUS Client Terminate Reasons JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 368: ...328 Managing L2TP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 408: ...368 Configuring the Weighted Load Balancing Method JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 444: ...404 PPP Accounting Statistics JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 492: ...452 Monitoring Operational Status within the Current VR Context JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 494: ...454 Managing DHCP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 510: ...470 DHCP Local Server Configuration Tasks JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 528: ...488 Configuring the Router to Work with the SRC Software JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 556: ...516 Configuring DHCP Relay Proxy JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 616: ...576 Managing the Subscriber Environment JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 632: ...592 Subscriber Management Configuration Examples JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 636: ...596 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 672: ...632 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 674: ...634 Managing Subscriber Services JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 767: ...Part 7 Index Index on page 729 Index 727...
Страница 768: ...728 Index JUNOSe 11 0 x Broadband Access Configuration Guide...