Juniper EX3400 Features Guide

2. Configure DHCPv6 relay agent to insert option 18 (Relay Agent Interface-ID), option
37 (Relay Agent Remote-ID), or both.
•
To configure option 18:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit relay-agent-interface-id
•
To configure option 37:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit relay-agent-remote-id
3. Specify that the textual description is included in the option information. In the
following example, the option information includes the description used for the device
interface.
•
To include the textual description in option 18:
[edit forwarding-options dhcp-relay dhcpv6 relay-agent-interface-id]
user@host# set use-interface-description device
•
To include the textual description in option 37:
[edit forwarding-options dhcp-relay dhcpv6 relay-agent-remote-id]
user@host# set use-interface-description device
Trusting Option 82 Information
By default, the DHCP relay agent treats client packets with a giaddr of 0 (zero) and
option 82 information as if the packets originated at an untrusted source, and drops them
without further processing. You can override this behavior and specify that the DHCP
relay agent process DHCP client packets that have a giaddr of 0 (zero) and contain
option 82 information.
To configure DHCP relay agent to trust option 82 information:
1. Specify that you want to configure override options.
[edit forwarding-options dhcp-relay]
user@host# edit overrides
2. Specify that the DHCP relay agent process DHCP client packets with a giaddr of 0
and that contain option 82 information.
[edit forwarding-options dhcp-relay overrides]
user@host# set trust-option-82
Related
Documentation
Extended DHCP Relay Agent Overview on page 46•
• Overriding the Default DHCP Relay Configuration Settings on page 68
67Copyright © 2017, Juniper Networks, Inc.
Chapter 4: DHCP Relay Agent

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