Juniper EX3400 Features Guide

The textual description is configured separately, using the description statement at the
[edit interfaces interface-name] hierarchy level. If you specify that the textual description
is used and no description is configured for the interface, DHCP relay defaults to using
the Layer 2 interface name.
In the case of integrated routing and bridging (IRB) interfaces, the textual description of
the Layer 2 interface is used instead of the textual description of the IRB interface. If there
is no description configured, the Layer 2 logical interface name is used.
NOTE: For IRB interfaces, the option 82 field must be able to uniquely identify
the incoming interface based on either the Agent Circuit ID or Agent Remote
ID . You can modify the information in the textual interface description to
match the raw IFD (physical interface without a subunit) name and configure
the option 82 field to use the interface description.
You can use the textual description with the following DHCP options:
•
DHCPv4 Option 82 Agent Circuit ID (suboption 1)
•
DHCPv4 Option 82 Agent Remote ID (suboption 2)
•
DHCPv6 Relay Agent Interface-ID (option 18)
•
DHCPv6 Relay Agent Remote-ID (option 37)
(DHCPv4) To configure the DHCP relay option 82 suboption to include the textual
interface description:
1. Specify that you want to configure option 82 support.
[edit forwarding-options dhcp-relay]
user@host# edit relay-option-82
2. Configure DHCP relay agent to insert the Agent Circuit ID, Agent Remote ID, or both.
[edit forwarding-options dhcp-relay relay-option-82]
user@host# edit circuit-id
3. Specify that the textual description is included in the option 82 information. In this
example, the option 82 information includes the description used for the device
interface.
[edit forwarding-options dhcp-relay relay-option-82 circuit-id]
user@host# set use-interface-description device
(DHCPv6) To configure the DHCPv6 option 18 or option 37 to include the textual interface
description:
1. Specify that you want to configure DHCPv6 relay agent support.
[edit forwarding-options dhcp-relay]
user@host# edit dhcpv6
Copyright © 2017, Juniper Networks, Inc.66
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