Juniper EX2200 Hardware Guide

MAC-in-MAC Packet Hashing
Packets using the MAC-in-MAC EtherType are hashed by the hashing algorithm using
the Layer 2 payload source MAC, Layer 2 payload destination MAC, and Layer 2 payload
EtherType fields. See Table 8 on page 15.
Hashing using the fields in the MAC-in-MAC EtherType packet is first supported on
EX4300 switches in Release 13.2X51-D20. Hashing using the fields in the MAC-in-MAC
EtherType is not supported on earlier releases.
The fields used by the hashing algorithm for MAC-in-MAC hashing are not
user-configurable.
•
✓—Field is used by the hashing algorithm, by default.
•
Χ—Field is not used by the hashing algorithm, by default.
Table 8: MAC-in-MAC Hashing Fields
QFX5100EX4300Field
✓✓Layer 2 Payload Source MAC
✓✓Layer 2 Payload Destination MAC
✓✓Layer 2 Payload EtherType
ΧΧLayer 2 Payload Outer VLAN
Layer 2 Header Hashing
Layer 2 header fields are used by the hashing algorithm when a packet’s EtherType is
not recognized as IP (IPv4 or IPv6), MPLS, or MAC-in-MAC. The Layer 2 header fields are
also used for hashing IPv4, IPv6, and MPLS traffic instead of the payload fields when the
hash mode is set to Layer 2 header.
•
✓—Field is used by the hashing algorithm, by default.
•
Χ—Field is not used by the hashing algorithm, by default.
•
(configurable)—Field can be configured to be used or not used by the hashing algorithm.
Table 9: Layer 2 Header Hashing Fields
QFX5100EX4300Field
✓
(configurable)
✓
(configurable)
Source MAC
✓
(configurable)
✓
(configurable)
Destination MAC
15Copyright © 2015, Juniper Networks, Inc.
Chapter 1: Interfaces Overview

Juniper EX2200 Specifications

General

Throughput	77 Mpps
MAC address table	8000 entries
Jumbo frames support	Yes
Number of VLANs	1024
Networking standards	-
Switch type	Managed
SFP module slots quantity	4
Installed SFP modules quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Stackable	No
Product color	Black
Power consumption (typical)	100 W
Operating altitude	0 - 3048 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 %

Weight and Dimensions

Depth	254 mm
Width	441 mm
Height	43 mm
Weight	3600 g