Junos OS Interfaces Command Reference - Juniper Networks

Table 19: Byte Count by PIC Type (continued)
PIC Type
Non-IQ PIC
with a
SONET/SDH
interface
Interfaces
configured with
Frame Relay
Encapsulation
1-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
Sample Output
Output
Level
Interface
Interface
Interface
Packet
forwarding
component
show interfaces queue
(Aggregated Ethernet
on a T320 Router)
Copyright © 2012, Juniper Networks, Inc.
Byte Count Includes
For Juniper Networks T Series, TX Series, T1600, and MX
Series routers:
Queued: 478 bytes of Layer 3 packet.
Transmitted: 478 bytes of Layer 3 packet.
For Juniper Networks 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
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.
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.
Queued: 478 bytes of Layer 3 packet.
Transmitted: 478 bytes of Layer 3 packet.
Comments
For transmitted packets, the
additional 5 bytes includes 4
bytes for the PPP header and
1 byte for the packet loss
priority (PLP).
The Layer 2 overhead is 18
bytes for non-VLAN traffic and
22 bytes for VLAN traffic.
The following example shows that the aggregated Ethernet interface, ae1, has traffic on
queues af1 and af12:
Chapter 2: Common Interface Commands
user@host> show interfaces queue ae1
Physical interface: ae1, Enabled, Physical link is Up
Interface index: 158, SNMP ifIndex: 33 Forwarding classes: 8 supported, 8 in use
Output queues: 8 supported, 8 in use
Queue: 0, Forwarding classes: be
Queued:
Packets : 5 0 pps
Bytes : 242 0 bps
Transmitted:
Packets : 5 0 pps
Bytes : 242 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 0 0 pps
RED-dropped bytes : 0 0 bps
Queue: 1, Forwarding classes: af1
Queued:
–
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