[LARTC] Help regarding TBF and CBQ

[Suresh Babu]

Hello

Please give advice in selecting suitable QoS Solution for our device. It
contains one WAN port and a LAN port(4 port switch). The WAN will be
connected to an ADSL modem(so we don`t know the bandwidth in advance for the
WAN and depends on the ADSL connection taken). We need to give highest
priority to the Voice and control the WAN bandwidth to 2Mbps. I tried with
the TBF by giving 500kbps for voice and 1.5Mbps for other traffic(I`m
assuming that a user takes atmost 2Mbps line). But the maximum throughput
i`m getting for the data is 1.15 only. Even if create only one TBF class
with full 2 Mbps rate).

I need to simulate different WAN bandwidth speeds like 64kbps, 128kbps,
256kbps..etc, How to do simulate this?.
What is the maximum bandwidth that a TBF can control?
What is the suitable solution for providing a QoS to our device?
Does CBQ helps in my case?

Thanks in Advance.
Regards,
Suresh Babu.
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