Name: Juniper EX3400
Brand: Juniper
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[edit system services dhcp-local-server]

user@host# edit overrides

•

For DHCP relay agent:

[edit forwarding-options dhcp-relay]

user@host# edit overrides

2. Enable auto logout and specify the secondary identification method you want to use

when the primary identification method is unsuccessful.

•

For example, to configure DHCP local server to use the incoming interface method:

[edit system services dhcp-local-server overrides]

user@host# set client-discover-match incoming-interface

•

For example, to configure DHCP relay agent to use the option 60 and option 82

method:

[edit forwarding-options dhcp-relay overrides]

user@host# set client-discover-match option60-and-option82

NOTE: If you change the auto logout configuration, existing clients continue

to use the auto logout setting that was configured when they logged in. New

clients use the new setting.

Documentation

DHCP Auto Logout Overview on page 124•

• How DHCP Relay Agent Uses Option 82 for Auto Logout on page 126

• Allowing Only One DHCP Client Per Interface

• Deleting DHCP Local Server and DHCP Relay Override Settings on page 30

• Extended DHCP Local Server Overview on page 22

• Extended DHCP Relay Agent Overview on page 46

Assign a Specific IP Address to a Client Using DHCP Option 50 and DHCPv6 IA_NA

Option

Subscriber management or DHCP management enables you to specify that DHCP local

server assign a particular address to a client. For example, if a client is disconnected, you

might use this capability to assign the same address that the client was using prior to

being disconnected. If the requested address is available, DHCP assigns it to the client.

If the address is unavailable, the DHCP local server offers another address, based on the

address allocation process.

Both DHCP local server and DHCPv6 local server support the specific address request

feature. DHCP local server uses DHCP option 50 in DHCP DISCOVER messages to request

a particular address, while DHCPv6 local server uses the IA_NA option (Identity Association

for Non-Temporary Addresses) in DHCPv6 SOLICIT messages.

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