Juniper EX3400 Features Guide

NOTE: If you delete the DHCP server configuration, DHCP server bindings
might still remain. To ensure that DHCP bindings are removed, issue the clear
dhcp server binding command before you delete the DHCP server configuration.
This overview covers:
•
Interaction Among the DHCP Client, Extended DHCP Local Server, and
Address-Assignment Pools on page 24
•
Providing DHCP Client Configuration Information on page 25
•
Minimal Configuration for Clients on page 26
•
DHCP Local Server and Address-Assignment Pools on page 26
Interaction Among the DHCP Client, Extended DHCP Local Server, and Address-Assignment
Pools
The pattern of interaction between the DHCP local server, the DHCP client, and
address-assignment pools is the same regardless of whether you are using a router or a
switch. However, there are some differences in the details of usage.
•
On routers—In a typical carrier edge network configuration, the DHCP client is on the
subscriber’s computer or customer premises equipment (CPE), and the DHCP local
server is configured on the router.
•
On switches—In a typical network configuration, the DHCP client is on an access device,
such as a personal computer, and the DHCP local server is configured on the switch.
The following steps provide a high-level description of the interaction among the DHCP
local server, DHCP client, and address-assignment pools:
1. The DHCP client sends a discover packet to one or more DHCP local servers in the
network to obtain configuration parameters and an IP address for the subscriber (or
DHCP client).
2. Each DHCP local server that receives the discover packet then searches its
address-assignment pool for the client address and configuration options. Each local
server creates an entry in its internal client table to keep track of the client state, then
sends a DHCP offer packet to the client.
3. On receipt of the offer packet, the DHCP client selects the DHCP local server from
which to obtain configuration information and sends a request packet indicating the
DHCP local server selected to grant the address and configuration information.
4. The selected DHCP local server sends an acknowledgement packet to the client that
contains the client address lease and configuration parameters. The server also installs
the host route and ARP entry, and then monitors the lease state.
Copyright © 2017, Juniper Networks, Inc.24
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

Weight and Dimensions

Depth	350 mm
Width	437 mm
Height	44 mm
Weight	5740 g