Mac-In-Mac Packet Hashing; Layer 2 Header Hashing; Table 8: Mac-In-Mac Hashing Fields; Table 9: Layer 2 Header Hashing Fields - Juniper EX2200 Hardware Manual

MAC-in-MAC Packet Hashing

Layer 2 Header Hashing

Copyright © 2015, Juniper Networks, Inc.
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
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

Field
Layer 2 Payload Source MAC
Layer 2 Payload Destination MAC
Layer 2 Payload EtherType
Layer 2 Payload Outer VLAN
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

Field
Source MAC
Destination MAC
15.
EX4300
Χ
EX4300
(configurable)
(configurable)
Chapter 1: Interfaces Overview
QFX5100
Χ
QFX5100
(configurable)
(configurable)
15