Junos
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Junos

M7, M10, IQ2 PIC

‎05-16-2014 02:52 AM

I'm trying to implement CoS.

With IQ2 PICs istalled on an M7 or an M10 router, can I enable the use of 8 queues instead of 4 on those IQ2 PICs?

 

Thank You!

1 REPLY 1
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Junos

Re: M7, M10, IQ2 PIC

‎05-19-2014 06:30 AM

On the M7i router I have configured 4 more forwarding classes and assigned them to queues 4 through 7.

 

run show class-of-service forwarding-class   
Forwarding class                       ID   Queue  Restricted queue  Fabric priority  Policing priority   SPU priority
  best-effort                                    0      0                                0             low                normal                  low   
  expedited-forwarding               1      1                                1             low                normal                   low   
  assured-forwarding                  2       2                                2             low                normal                  low   
  network-control                         3       3                                3             low                normal                  low   
  Queue_4                                    4       4                                0             low                normal                  low   
  Queue_5                                    5       5                                1             low                normal                  low   
  Queue_6                                    6       6                                2             low                normal                  low   
  Queue_7                                    7       7                                3             low                normal                  low 

 

I have also entered the command max-queues-per-interface 8.

 

fpc 0 {
    pic 0 {
        max-queues-per-interface 8;
    }
}

Now under show interfaces ge-0/0/0 extensive it displays:

 

CoS queues     : 4 supported, 4 maximum usable queues

Ingress queues: 4 supported, 8 in use

Egress queues: 4 supported, 8 in use

 

I wanted to enable 8 queues, but this doesen't seem right.

What is the difference between supported queue and queue in use?

Also, what is the difference between queue and restricted queue?

 

Can the IQ2 PIC inside an M7i router actually be configured with 8 queues?

 

Thank You!

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