need help to understand the output of show policy-map interface output on PE router

[vinodjad1234]

                   Hi Experts,

I have bit confusion to understand the output of " show policy-map interface " on PE router.

users in my sites are facing slowness issues whereas i could see that there are top talker who are using more bandwidth and trying to get resolved however i got an output shared by service providers which is unclear to me .,

Can anybody help me to understand the output details and conclusion ?

Forwarding classes: BE

Queued:

Packets : 3105443632 139 pps

Bytes : 1544221041788 164784 bps

Transmitted:

Packets : 2999858418 139 pps

Bytes : 1473218753196 164784 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 105585214 0 pps

RED-dropped bytes : 71002288592 0 bps

Forwarding classes: AF1x

Queued:

Packets : 940463 0 pps

Bytes : 222368514 0 bps

Transmitted:

Packets : 926764 0 pps

Bytes : 209961500 0 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 13699 0 pps

RED-dropped bytes : 12407014 0 bps

Forwarding classes: AF2x

Queued:

Packets : 257892489 1 pps

Bytes : 106803237554 720 bps

Transmitted:

Packets : 257776097 1 pps

Bytes : 106661426194 720 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 116392 0 pps

RED-dropped bytes : 141811360 0 bps

Forwarding classes: AF3x

Queued:

Packets : 548803549 45 pps

Bytes : 86448197787 24392 bps

Transmitted:

Packets : 548603293 45 pps

Bytes : 86267611955 24392 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 200256 0 pps

RED-dropped bytes : 180585832 0 bps

Forwarding classes: AF4x

Queued:

Packets : 92948 0 pps

Bytes : 70241666 0 bps

Transmitted:

Packets : 92874 0 pps

Bytes : 70181012 0 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 74 0 pps

RED-dropped bytes : 60654 0 bps

Forwarding classes: EF

Queued:

Packets : 40739830 0 pps

Bytes : 15757818691 0 bps

Transmitted:

Packets : 39510932 0 pps

Bytes : 15541250243 0 bps

Tail-dropped packets : 1228895 0 pps Forwarding classes: BE
Queued:
Packets : 3105443632 139 pps
Bytes : 1544221041788 164784 bps
Transmitted:
Packets : 2999858418 139 pps
Bytes : 1473218753196 164784 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 105585214 0 pps
RED-dropped bytes : 71002288592 0 bps
Forwarding classes: AF1x
Queued:
Packets : 940463 0 pps
Bytes : 222368514 0 bps
Transmitted:
Packets : 926764 0 pps
Bytes : 209961500 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 13699 0 pps
RED-dropped bytes : 12407014 0 bps
Forwarding classes: AF2x
Queued:
Packets : 257892489 1 pps
Bytes : 106803237554 720 bps
Transmitted:
Packets : 257776097 1 pps
Bytes : 106661426194 720 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 116392 0 pps
RED-dropped bytes : 141811360 0 bps
Forwarding classes: AF3x
Queued:
Packets : 548803549 45 pps
Bytes : 86448197787 24392 bps
Transmitted:
Packets : 548603293 45 pps
Bytes : 86267611955 24392 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 200256 0 pps
RED-dropped bytes : 180585832 0 bps
Forwarding classes: AF4x
Queued:
Packets : 92948 0 pps
Bytes : 70241666 0 bps
Transmitted:
Packets : 92874 0 pps
Bytes : 70181012 0 bps
Tail-dropped packets : 0 0 pps
RED-dropped packets : 74 0 pps
RED-dropped bytes : 60654 0 bps
Forwarding classes: EF
Queued:
Packets : 40739830 0 pps
Bytes : 15757818691 0 bps
Transmitted:
Packets : 39510932 0 pps
Bytes : 15541250243 0 bps
Tail-dropped packets : 1228895 0 pps

It would be really helpful if somebody can explain this .....

Thanks in advance .

[Giuseppe Larosa]

Hello Vinodjad,

first of all this is the output taken from a Juniper PE router, however I don't see any issue in reading the output

Let's take for example the following forwarding class

Forwarding classes: AF1x

Queued:

Packets : 940463 0 pps

Bytes : 222368514 0 bps

Transmitted:

Packets : 926764 0 pps

Bytes : 209961500 0 bps

Tail-dropped packets : 0 0 pps

RED-dropped packets : 13699 0 pps

RED-dropped bytes : 12407014 0 bps

The output says:

for traffic class AF1x out of this interface 940463 packets and

222368514 corresponding bytes have been put on the queue

Of all these packets

926764 packets have been effectively transmitted out of interface

13699 packets of this traffic class have been dropped by RED (Random Early Detection) as they happened to be in the queue in a position that made them "droppable" by this mechanism.

The same reasoning can be done for the other traffic classes/forwarding classes

Hope to help

Giuseppe

[vinodjad1234]

Hi Giuseppe,

Thanks for your explanation .

however I keen to know that whether this drops e.q.13699 packets for af1x class , is it acceptable ? or something is wrong like more congestion on this interface .

how do we come to the conclusion ?

what is the limits or specification for this drops which can be accepted for lets say any class ?

I really once again thanks for your help.