Juniper EX3400 Features Guide

3. Specify that you want to configure the liveness detection method.
•
For DHCP global configuration:
[edit forwarding-options dhcp-relay liveness-detection]
user@host# edit method
•
For DHCP group configuration:
[edit forwarding-options dhcp-relay group group-name liveness-detection]
user@host# edit method
4. Specify the liveness detection method that you want DHCP to use.
NOTE: The only method supported for liveness detection is Bidirectional
Forwarding Detection (BFD).
•
For DHCP global configuration:
[edit forwarding-options dhcp-relay liveness-detection method]
user@host# edit bfd
•
For DHCP group configuration:
[edit forwarding-options dhcp-relay group group-name liveness-detection method]
user@host# edit bfd
5. Configure the liveness detection method as desired.
See Example: Configuring Global Liveness Detection for DHCP Relay Agent Clients for
an example of how to globally configure DHCP relay liveness detection.
6. Configure the action the router takes when a liveness detection failure occurs.
•
For DHCP global configuration:
[edit forwarding-options dhcp-relay liveness-detection]
user@host# edit failure-action action
•
For DHCP group configuration:
[edit forwarding-options dhcp-relay group group-name liveness-detection]
user@host# edit failure-action action
Related
Documentation
• Extended DHCP Relay Agent Overview on page 46
• DHCP Liveness Detection Overview on page 95
• Configuring Detection of DHCP Local Server Client Connectivity on page 96
• Example: Configuring Group Liveness Detection for DHCP Local Server Clients
• Example: Configuring Global Liveness Detection for DHCP Relay Agent Clients
99Copyright © 2017, Juniper Networks, Inc.
Chapter 7: DHCP Liveness Detection

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