Name: Juniper EX3400
Brand: Juniper
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You can change DHCP client configurations from the switch, using client identifiers to

indicate which clients you want to configure.

To configure a DHCP client, you configure an interface to belong to the DHCP family and

specify additional attributes, as desired:

[edit]

user@switch# set interfaces interface-name unit number family inet dhcp

configuration-statement

The options that you can configure are listed in Table 6 on page 18. Replace the variable

configuration-statement with one or more of the statements listed in this table. If you do

not explicitly configure these options, the switch uses default values for them.

Table 6: DHCP Client Settings

DescriptionConfiguration Statement

Unique client ID—By default this consists of the hardware type (01 for Ethernet)

and the MAC address (a.b.c.d). For this example, the value would be 01abcd.

client-identifier

Time in seconds that a client holds the lease for an IP address assigned by a DHCP

server. If a client does not request a specific lease time, then the server sends the

default lease time. The default lease time on a Junos OS DHCP server is 1 day.

lease-time

Number of times the client attempts to retransmit a DHCP packet.retransmission-attempt

Time between transmission attempts.retransmission-interval

IP address of the server that the client queries for an IP address.server-address

TCP/IP settings learned from an external DHCP server to the DHCP server running

on the switch are propagated.

update-server

Vendor class ID (CPU's manufacturer ID string) for the DHCP client.vendor-option

Documentation

Configuring a DHCP Server on Switches (CLI Procedure)•

• Understanding DHCP Services for Switches on page 3

Configuring a DHCP SIP Server (CLI Procedure)

You can use the sip-server statement on the EX Series switch to configure option 120 on

a DHCP server. The DHCP server sends configured option values—Session Initiation

Protocol (SIP) server addresses or names—to DHCP clients when they request them.

Previously, you were only allowed to specify a SIP server by address using [edit system

services dhcp option 120]. You specify either an IPv4 address or a fully qualified domain

name to be used by SIP clients to locate a SIP server. You cannot specify both an address

and name in the same statement.

To configure a SIP server using the address option:

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