Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: CBR? Required to reserve BW even if no CBR traffic?
Richard Brandt wrote in message <6n78de$lrf@bgtnsc03.worldnet.att.net>... >I've been trying to research if a vendor is ATM Forum compliant (or has a >good design). They say that any unused CBR traffic is available for >anybody else's use. If you have a CBR contract for 30 Mbps, and the source is only using 15Mbps, then this 15Mbps can be used for other connections. >Looking at TM4.0, I only see that if a switch >accepts a CBR connection then it must provide what was contracted for. >I've also heard how inefficient CBR is because the bandwidth goes to >waste. This is implementation dependant, for example if you're emulating a DS0 voice circuit, and the circuit is "on-hook" then there is no need to send any data on this CBR circuit. Freeing the bandwidth for other use. If a vendor has CBR in the highest queue, then couldn't CBR >traffic that was ramping up just start using that queue and still get his >QoS satisfied? > >Thanks. >-- >Richard L. Brandt - Richard@Brandt.net >"The faster the network, the quicker it goes down." |
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