[LARTC] tc hard problem

[Patrick Chan <patrick_chan@mtelnet.com>]

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Hi,

I have a Linux router which has to do QoS
Voice and Data traffic will pass through this router
Of cuz, voice traffic is put in first priority than data traffic
Can you tell me how can I configure tc in order to meet 
the following requirements?

1. There are two types of traffic: voice and data

2. The bandwidth to the Internet is just 64K

3. Each voice call occupies 16K bandwidth, so 
the whole bandwidth can only allows 4 concurrent voice calls

4. The most important and most hard to do:
If no voice call, data can use up to 64K bandwidth

If there are three voice calls, voice can use up to 16K x 3 = 48K bandwidth,
data only can use 16K bandwidth

If there are four voice calls, voice can use up to 64K bandwidth,
data cannot use any bandwidth

Voice always come first, data can only use the bandwidth left.


Thanks very much.

Patrick

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