Juniper EX3400 Features Guide

[edit forwarding-options dhcp-relay group boston]
user@host# edit overrides
3. Disable automatic binding for the group.
[edit forwarding-options dhcp-relay group boston overrides]
user@host# set no-bind-on-request
To disable automatic binding of stray requests on a specific interface:
1. Specify the named group of which the interface is a member.
[edit forwarding-options dhcp-relay]
user@host# edit group boston
2. Specify the interface on which you want to disable automatic binding.
[edit forwarding-options dhcp-relay group boston]
user@host# edit interface fe-1/0/1.2
3. Specify that you want to configure overrides.
[edit forwarding-options dhcp-relay group boston interface fe-1/0/1.2]
user@host# edit overrides
4. Disable automatic binding on the interface.
[edit forwarding-options dhcp-relay group boston interface fe-1/0/1.2 overrides]
user@host# set no-bind-on-request
Related
Documentation
Extended DHCP Relay Agent Overview on page 46•
• Overriding the Default DHCP Relay Configuration Settings on page 68
Using DHCP Relay Agent Option 82 Information
Subscriber management enables you to configure the DHCP relay agent to include
additional option 82 information in the DHCP packets that the relay agent receives from
clients and forwards to a DHCP server. The DHCP server uses the additional information
to determine the IP address to assign to the client. The server might also use the
information for other purposes—for example, to determine which services to grant the
client, or to provide additional security against threats such as address spoofing. The
DHCP server sends its reply back to the DHCP relay agent, and the agent removes the
option 82 information from the message and forwards the packet to the client.
To configure support for the DHCP relay agent information option 82, you use the
relay-option-82 statement. You can configure the DHCP relay agent to include the
following suboptions in the packet the relay agent sends to the DHCP server:
•
Agent Circuit ID (suboption 1)—An ASCII string that identifies the interface on which
the client DHCP packet is received.
Copyright © 2017, Juniper Networks, Inc.60
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