Juniper EX3400 Features Guide

Chapter 10 Managing IP Address Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Address-Assignment Pools Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Configuring How the Extended DHCP Local Server Determines Which
Address-Assignment Pool to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Example: Extended DHCP Local Server Configuration with Optional Pool
Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
DHCP Auto Logout Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Auto Logout Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
How DHCP Identifies and Releases Clients . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Option 60 and Option 82 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
How DHCP Relay Agent Uses Option 82 for Auto Logout . . . . . . . . . . . . . . . . . . . 126
Automatically Logging Out DHCP Clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Assign a Specific IP Address to a Client Using DHCP Option 50 and DHCPv6
IA_NA Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Multiple Address Assignment for DHCPv6 Clients . . . . . . . . . . . . . . . . . . . . . . . . 129
Part 2 Other System Services
Chapter 11 Configuring Packet Forwarding Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Configuring Port-based LAN Broadcast Packet Forwarding . . . . . . . . . . . . . . . . . 133
Part 3 Configuration Statements and Operational Commands
Chapter 12 Configuration Statements (DHCP and DHCP Relay) . . . . . . . . . . . . . . . . . . 137
access (Dynamic Access Routes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
access-internal (Dynamic Access-Internal Routes) . . . . . . . . . . . . . . . . . . . . . . . 142
active-server-group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
allow-no-end-option (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
allow-snooped-clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
always-write-giaddr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
always-write-option-82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
attempts (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
authentication (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
authentication (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
bfd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
circuit-id (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
circuit-type (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
circuit-type (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
clear-on-abort (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
client-discover-match (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
client-id (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
client-id (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
delegated-pool (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
delimiter (DHCP Local Server) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
delimiter (DHCP Relay Agent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
detection-time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
dhcp (DHCP Client) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
dhcp-local-server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
dhcp-relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Copyright © 2017, Juniper Networks, Inc.vi
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