Junos OS Interfaces Command Reference - Juniper Networks

Junos OS 12.1 Interfaces Command Reference
Framerelay header : 2 bytes
Inner proto : 2 bytes
HDLC flag and FCS : 4 bytes
Fragments 2 ...n :
Fragmentaion header : 2 bytes
Framerelay header : 2 bytes
HDLC flag and FCS : 4 bytes
Overhead with LFI MLPPP(Long & short sequence):
============================
Outer PPP header : 4 bytes
HDLC flag and FCS : 4 bytes
MLFR (FRF15):
=============
Framerelay header : 2 bytes
Control,NLPID : 2 bytes
HDLC flag and FCS : 4 bytes
The following examples show overhead for different cases:
• A 1000-byte packet is sent to a mlppp bundle without any fragmentation. At the
layer 2 level, bytes transmitted is 1013 in 1 packet. This overhead is for MLPPP long
sequence encap.
• A 1000-byte packet is sent to a mlppp bundle with a fragment threshold of
250byte. At the layer 2 level, bytes transmitted is 1061 bytes in 5 packets.
• A 1000-byte LFI packet is sent to an mlppp bundle. At the layer 2 level, bytes
transmitted is 1008 in 1 packet.
remaining-traffic—(Optional) Display the queuing statistics of all logical interfaces that
do not have traffic-control profiles configured. (Not on the QFX Series.)
Additional Information On M Series routers (except for the M320 and M120 routers), this command is valid only
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for a PIC installed on an enhanced Flexible PIC Concentrator (FPC).
Queue statistics for aggregated interfaces are supported on the M Series and T Series
routers only. Statistics for an aggregated interface are the summation of the queue
statistics of the child links of that aggregated interface. You can view the statistics for a
child interface by using the show interfaces statistics command for that child interface.
When you configure tricolor marking on a 10-port 1-Gigabit Ethernet PIC, for queues 6
and 7 only, the output does not display the number of queued bytes and packets, or the
number of bytes and packets dropped because of RED. If you do not configure tricolor
marking on the interface, these statistics are available for all queues.
For the 4-port Channelized OC12 IQE PIC and 1-port Channelized OC48 IQE PIC, the
Packet Forwarding Engine Chassis Queues field represents traffic bound for a particular
physical interface on the PIC. For all other PICs, the Packet Forwarding Engine Chassis
Queues field represents the total traffic bound for the PIC.
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