Name: Juniper EX3400
Brand: Juniper
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request dhcp server reconfigure

Syntax request dhcp server reconfigure (all | address | interface interface–name | logical-system

logical-system–name | routing-instance routing-instance–name)

Release Information Command introduced in Junos OS Release 10.0.

Command introduced in Junos OS Release 12.3R2 for EX Series switches.

Description Initiate reconfiguration processing for the specified DHCP clients if they are in the bound

state. If the clients are in the reconfiguring state, this command has no effect. If the clients

are in any state other than bound or reconfiguring, this command has the same effect

as the clear dhcp server binding command.

When the local server state machine starts the reconfiguration process on a bound client,

the client transitions to the reconfiguring state and the local server sends a forcerenew

message to the client. Because the client was in the bound state before entering the

reconfiguring state, all subscriber (or DHCP client) services, such as forwarding and

statistics, continue to work. An exponential back-off timer determines the interval at

which the forcerenew message is sent. If the final attempt is unsuccessful, the client is

returned to its original state by default. You can optionally include the clear-on-abort

statement to configure the client to be cleared when reconfiguration fails.

Options all—Initiate reconfiguration for all DHCP clients.

address—Initiate reconfiguration for DHCP client with the specified IP address or MAC

address.

interface interface-name—Initiate reconfiguration for all DHCP clients on this logical

interface (clients whose initial login requests were received over the specified

interface).

NOTE: You cannot use the interface interface-name option with the request

dhcp server reconfigure command for DHCP passive clients (clients that

are added as a result of DHCP snooped packets). For passive clients, the

interface is not guaranteed to be the next-hop interface to the client, as

is the case for active clients.

logical-system logical-system-name—Initiate reconfiguration for all DHCP clients on

the specified logical system.

routing-instance routing-instance-name—Initiate reconfiguration reconfigured for all

DHCP clients in the specified routing instance.

Required Privilege

Level

view

DHCP and Other System Services Feature Guide for EX2300, EX3400, and EX4300 Switches

Juniper EX3400 Specifications

General

Switch type	Managed
Switch layer	L2/L3
Quality of Service (QoS) support	Yes
Safety	UL-UL60950-1, C-UL CAN/CSA 22.2 No.60950-1, TUV/GS to EN 60950-1, CB-IEC60950-1, EN 60825-1
Form factor	1U
Product color	Black
Electromagnetic compatibility	FCC 47CFR 15 A, EN 55022 A, ICES-003 A, VCCI A, AS/NZS CISPR 22 A, CISPR 22 A, EN 55024, EN 300386, CE
SFP+ module slots quantity	4
QSFP+ module slots quantity	2
Installed SFP+ modules quantity	0
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	48
Memory type	DRAM
Noise level	35 dB
Flash memory	2000 MB
Processor frequency	1000 MHz
Virtual stacking (units)	10
Throughput	250 Mpps
Jumbo frames	9216
MAC address table	32000 entries
Number of VLANs	4093
Networking standards	IEEE 802.1D, IEEE 802.1Q, IEEE 802.1ab, IEEE 802.1p, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3ae, IEEE 802.3u, IEEE 802.3z
Virtual LAN features	Port-based VLAN
Copper ethernet cabling technology	10BASE-T, 100BASE-T, 1000BASE-T
Power consumption (max)	120 W
Number of power supply units	1
Operating altitude	0 - 3048 m
Non-operating altitude	3048 - 4877 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 85 %
DHCP features	DHCP server, DHCP client
Authentication	MAC-based authentication, Port-based authentication
Security algorithms	802.1x RADIUS, HTTPS, SNMP, SSH-2
Fiber ethernet cabling technology	1000BASE-X