Juniper ACX2000 Configuration Guide

Table 148: Byte Count by Interface Hardware (continued)
CommentsByte Count Includes
Output
Level
Interface
Hardware
The additional 4 bytes are for
the Layer 2 Point-to-Point
Protocol (PPP) header.
Queued: 482 bytes per packet, representing 478 bytes of
Layer 3 packet + 4 bytes
Transmitted: 482 bytes per packet, representing 478 bytes
of Layer 3 packet + 4 bytes
RED dropped: 482 bytes per packet, representing 478 bytes
of Layer 3 packet + 4 bytes
InterfaceIQ and IQE PICs
with a
SONET/SDH
interface
For transmitted packets, the
additional 8 bytes includes 4
bytes for the PPP header and
4 bytes for a cookie.
Queued: 478 bytes per packet, representing 478 bytes of
Layer 3 packet
Transmitted: 486 bytes per packet, representing 478 bytes
of Layer 3 packet + 8 bytes
Packet
forwarding
component
For transmitted packets, the
additional 5 bytes includes 4
bytes for the PPP header and
1 byte for the packet loss
priority (PLP).
T Series, TX Series, T1600, and MX Series routers:
• Queued: 478 bytes of Layer 3 packet.
• Transmitted: 478 bytes of Layer 3 packet.
M Series routers:
• Queued: 478 bytes of Layer 3 packet.
• Transmitted: 483 bytes per packet, representing 478 bytes
of Layer 3 packet + 5 bytes
• RED dropped: 478 bytes per packet, representing 478 bytes
of Layer 3 packet
InterfaceNon-IQ PIC
with a
SONET/SDH
interface
The default Frame Relay overhead is 7 bytes. If you configure
the Frame Check Sequence (FCS) to 4 bytes, then the
overhead increases to 10 bytes.
InterfaceInterfaces
configured with
Frame Relay
Encapsulation
The Layer 2 overhead is 18
bytes for non-VLAN traffic
and 22 bytes for VLAN traffic.
Queued: 478 bytes of Layer 3 packet + the full Layer 2
overhead including CRC.
Transmitted: 478 bytes of Layer 3 packet + the full Layer 2
overhead including CRC.
Interface1-port
10-Gigabit
Ethernet IQ2
and IQ2–E PICs
4-port 1G IQ2
and IQ2-E PICs
8-port 1G IQ2
and IQ2-E PICs
–Queued: 478 bytes of Layer 3 packet.
Transmitted: 478 bytes of Layer 3 packet.
Packet
forwarding
component
Sample Output
show interfaces queue (Rate-Limited Interface on a Gigabit Ethernet MIC in an MPC)
The following example shows queue information for the rate-limited interface ge-4/2/0
on a Gigabit Ethernet MIC in an MPC. For rate-limited queues for interfaces hosted on
MICs or MPCs, rate-limit packet drops occur prior to packet output queuing. In the
2553Copyright © 2017, Juniper Networks, Inc.
Chapter 42: Operational Commands

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English