Juniper EX3300 Hardware Guide

layer2 (enhanced-hash-key)
Syntax layer2 {
no-destination-mac-address;
no-ether-type;
no-source-mac-address;
vlan-id;
}
Hierarchy Level [edit forwarding-options enhanced-hash-key]
Release Information Statement introduced in Junos OS Release 13.2X51-D15 for EX Series switches.
Statement introduced in Junos OS Release 13.2X51-D20 for QFX Series devices.
Description Select the fields in the Layer 2 header that are used by the hashing algorithm to make
hashing decisions.
When traffic enters a link aggregation group (LAG) bundle, the hashing algorithm checks
the fields configured using this statement and uses the information in the fields to decide
how to place traffic onto the LAG bundle’s member links. The hashing algorithm always
tries to manage bandwidth by evenly load-balancing all incoming traffic across the
member links in the bundle.
When traffic is exiting a device that has enabled ECMP, the hashing algorithm checks
the fields configured using this statement and uses the information in the fields to decide
how to forward traffic to the next hop device.
The hashing algorithm only inspects the fields in the Layer 2 header when the hash mode
is set to Layer 2 header. You can set the hash mode to Layer 2 header using the set
forwarding-options enhanced-hash-key hash-mode layer2-header statement.
Default The hash mode of the hashing algorithm is set to Layer 2 payload, by default. When the
hash mode is set to Layer 2 payload, the hashing algorithm does not use fields in the
Layer 2 header to make hashing decisions.
The following fields are used by the hashing algorithm when the hash mode of the hashing
algorithm is set to Layer 2 header, by default:
• Destination MAC address
• Ethertype
• Source MAC address
Options no-destination-mac-address—Exclude the destination MAC address field from the hashing
algorithm.
no-ether-type—Exclude the Ethertype field from the hashing algorithm.
no-source-mac-address—Exclude the source MAC address field from the hashing
algorithm.
Copyright © 2015, Juniper Networks, Inc.198
Network Interfaces for EX4300 Switches

Juniper EX3300 Specifications

General

Ethernet LAN	Yes
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Ethernet interface type	Gigabit Ethernet
Number of VLANs	4096
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3x, IEEE 802.3z
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Copper ethernet cabling technology	1000BASE-T, 100BASE-TX, 10BASE-T
Console port	-
ExpressCard slot	No
Fiber ports quantity	4
USB 2.0 ports quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Throughput	130 Mpps
Number of queues	8
MAC address table	16000 entries
Maximum data transfer rate	176 Gbit/s
Supported data transfer rates	10, 100, 1000Mbps
Switch type	Managed
Switch layer	L2
Security algorithms	SSH-2
Power source	AC
AC input voltage	100 - 240 V
Power consumption (typical)	100 W
Form factor	1U
Product color	Black
Flash memory	1024 MB
Processor frequency	1000 MHz
Compatible operating systems	Junos
Operating altitude	0 - 3049 m
Non-operating altitude	0 - 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 %
Supported network protocols	IPv6

Weight and Dimensions

Depth	310 mm
Width	437 mm
Height	44 mm
Weight	4900 g