Question regard output of data from router TX-Ring and qos

From: אשד אלוני (eshedalonie@gmail.com)
Date: Fri Mar 27 2009 - 13:10:47 ART


Thanks for the advice in multicast, I Will try that.

I have Problem to send my questions to ccielab@groupstudy.com I Don't know
why.
its says that I need to confirm my e-mails which I have done for about 4
times by repling to their e-mail.

Anyway
I am probably missing something regard True Output of Data from Router.
and regarding Tx-Ring and output queue and true line bandwidth.

Lets say This is the topology:
Router 100 Mbits -> Adsl Modem 100 Mbits -> Service Provider equipment 4
Mbits Line.

If I have a router with 100 Mbits Output and Modem with 100 mbits, and the
SP line is 4 mbits
From What I Understand The Router doesn't know of the existance of the line
with 4 mbits and sending in 100mbits per second to the adsl modem .
And I am doing only Qos LLQ to Voip trafiic. which put the voice traffic
first out from the interace.

Tx-ring is 15.

I Dont understand how much packets will be out from the router in per ms ?
If the router will really send 100 Mbits per second.
And if there is a possible that the Service provider will receive more then
4 Mbits per second and will drop packets in his side.

Which means that my only LLQ is not a good solution - and I need to use a
Parent Qos with Shaping 4 Mbits and child with LLQ.

What is the job of the Tx-ring in all this ?

Please assist to understand this subject better.

Thanks, Eshed.

Blogs and organic groups at http://www.ccie.net



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