[afnog] RED drops under class-of-service

[Mark Tinka]

On Thursday, November 03, 2011 03:19:08 AM ibtisam jamal 
wrote:

> Yes ,I understand that its configured to drop packets
> when it reaches a specific fill level as you can see.
> But the question is, why is it dropping ? the interfaces
> are Ge and using optical SFP's.
> It's confusing ,i don't understand why the drops.Or may
> be im missing something.

Without understanding your overall QoS strategy, it's hard 
to give a definitive answer. But based on the fact that you 
say your PIC is running quite hot, I wouldn't be surprised 
to learn that RED is kicking in.

> Another question is how will the schedulers know that 2
> of the Ge interfaces are actually on 2STM1 capacity
> ,without specifying .

Junos will automatically register a Gig-E PIC/port as having 
1000Mbps of bandwidth. QoS will automatically use that 
unless you specifically define 'bandwidth' at the 'unit' 
level.

One more thing, I wouldn't allocate 70% of bandwidth to the 
EF queue. 33% tends to be typical, but you can do whatever 
you want also.

Mark.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: This is a digitally signed message part.
URL: <http://afnog.org/pipermail/afnog/attachments/20111106/18bdb5ce/attachment.pgp>