Clients - Juniper EX3400 Features Manual

DHCP and Other System Services Feature Guide for EX2300, EX3400, and EX4300 Switches
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Configuring Dynamic Client Reconfiguration of Extended Local Server Clients
114
Table 14: Action Taken for Events That Occur During a
Reconfiguration (continued)
Event
The
request dhcp server reconfigure
request dhcpv6 server reconfigure
command is issued.
GRES or DHCP restart occurs.
Configuring Dynamic Client Reconfiguration of Extended Local Server Clients on page 114
The DHCP local server can initiate reconfiguration of its clients to avoid extended outages
because of server configuration changes. You can enable dynamic reconfiguration for
all DHCP clients or only the DHCP clients serviced by a specified group of interfaces, and
you can modify the behavior accordingly.
Starting in Junos OS Release 14.1, you can modify the behavior of the process in which
the DHCP local server initiates reconfiguration of its clients by including the appropriate
configuration statements. You can provide the statements at the
dhcp-local-server reconfigure]
system services dhcp-local-server dhcpv6 reconfigure]
clients. To override this global configuration for only the DHCP clients serviced by a
specified group of interfaces, you can include the statements with different values at the
[edit system services dhcp-local-server group group-name reconfigure]
DHCPv4 clients, and at the
hierarchy level for DHCPv6 clients.
group-name reconfigure]
To configure dynamic reconfiguration of DHCP clients:
Enable dynamic reconfiguration with default values for all clients.
1.
For DHCPv4:
[edit system services dhcp-local-server]
user@host# set reconfigure
For DHCPv6:
[edit system services dhcp-local-server dhcpv6]
user@host# set reconfigure
(Optional) Enable dynamic reconfiguration for only the DHCP clients serviced by a
2.
group of interfaces.
For DHCPv4:
[edit system services dhcp-local-server group-name]
user@host# set reconfigure
Action
(DHCPv4) or Command is ignored.
(DHCPv6)
Reconfiguration process is halted.
hierarchy level for all DHCPv4 clients, and at the
[edit system services dhcp-local-server dhcpv6 group
[edit system services
[edit
hierarchy level for all DHCPv6
hierarchy level for
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