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Two forwarding class with Strict queue

‎10-17-2017 11:20 AM

Hi there

 

If we have two traffic classes  say T1 and T2 , we want T1 to be serviced upto 5% and no more and T2 to be serviced 90% and no more.

T1 Strict priority 5% Exact

T2 strict Priority 90 % Exact

Will the above config do the trick?

 

 

Thanks and have a nice day!!

3 REPLIES 3
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Accepted by topic author sarahr202
‎10-17-2017 03:18 PM

Re: Two forwarding class with Strict queue

[ Edited ]
‎10-17-2017 01:06 PM

Hi, 

 

strict-high priority has precedence over all other priorities even when out of profile, always serviced first.

'transmit-rate exact' cannot be configured for strict-high priority, i.e strict-high can be out-of-profile and still has priority over all other schedulers. 

[edit class-of-service schedulers test1]
  'transmit-rate'
    cos_config_scheduler_attributes: cannot configure transmit rate exact and priority strict-high at the same time.

You could achieve this with high priority.

transmit-rate exact buffers excess traffic.

transmit-rate rate-limit hard polices/drops excess traffic

 

Cheers,

Ashvin

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Re: Two forwarding class with Strict queue

‎10-17-2017 03:14 PM

Additionally you are not allowed to configure more than one scheduler with strict-high priority in one scheduler map. You will get a commit error:

    More than one schedulers with priority strict-high for scheduler-map sm1
error: configuration check-out failed

It would work with rate-limit instead exact but unfortunatelly it's not supported on SRX.

 

Regards, Wojtek

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Re: Two forwarding class with Strict queue

‎10-17-2017 03:17 PM

Thanks

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