Juniper JUNOSE 10.0.X PHYSICAL LAYER, Configuration Manual

Page: 218 / 262

prioritizes control traffic over non-control traffic (that is, data). For a list of types of
control traffic, see “High-Density Ethernet” on page 192
.
For information about configuring policies on the ES2 10G LM and ES2-S2 10GE PR
IOA, see
JUNOSe Policy Management Configuration Guide .
Ethernet References
For more information about Ethernet implementations, consult the following
resources:
■
IEEE 802.1q (Virtual LANs)
■
IEEE 802.1w (Rapid Reconfiguration of Spanning Tree)
■
IEEE 802.3 (Fast Ethernet and Gigabit Ethernet)
■
IEEE 802.3u (Fast Ethernet only)
■
IEEE 802.3z (Gigabit Ethernet only)
■
IEEE 802.3ae (10-Gigabit Ethernet only)
■
IEEE 802.3ad (Link Aggregation)
■
RFC 826—An Ethernet Address Resolution Protocol (November 1982)
For more information about MIB support for Ethernet interfaces, consult the following
resources:
■
RFC 2863—The Interfaces Group MIB (June 2000)
■
RFC 2668—Definitions of Managed Objects for IEEE 802.3 Medium Attachment
Units (MAUs) (August 1999)
■
RFC 2665—Definitions of Managed Objects for the Ethernet-like Interface Types
(August 1998)
High-Density Ethernet
The following modules support high-density Ethernet:
■
GE-HDE line module and GE-8 I/O module combination
■
ES2 4G LM and ES2-S1 10GE IOA module combination
■
ES2 4G LM and ES2-S1 GE-8 IOA module combination
In the current release, you cannot configure port parameters for high-density Ethernet.
Instead, JUNOSe contains a packet classifier that enables the module to
intelligently
drop certain packets when the module becomes oversubscribed. The packet classifier
inspects each incoming packet to determine whether to classify it as control traffic.
To enhance network stability, the packet classifier prioritizes control traffic over
non-control traffic (that is, data). The packet classifier randomly drops non-control
packets when the interface is oversubscribed.
192 ■
Ethernet References
JUNOSe 10.0.x Physical Layer Configuration Guide