from the academic side of the house

Leigh Porter leigh.porter at ukbroadband.com
Tue Apr 24 16:15:42 UTC 2007


Adrian Chadd wrote:
> On Tue, Apr 24, 2007, bmanning at karoshi.com wrote:
>
>   
>> The next day, the team used a modified version of TCP to achieve an even
>> greater record. Using the same 30,000 km path, the network was able to
>> achieve a throughput of 9.08 Gbps which is equal to 272,400 Tb-m/s for both
>> the IPv6 multi and single stream categories. In doing so, the team surpassed
>> the current IPv4 records, proving that IPv6 networks are able to provide the
>> same, if not better, performance as IPv4.
>>     
>
> As one of the poor bastards still involved in rolling out VoIP over satellite
> delivered IP at the moment, I can safely say I'm (currently) happy noone's trying
> to push H.323 over IPv6 over these small-sized satellite links. Lord knows
> we have enough trouble getting concurrent calls through 20 + 20 + 
> byte overheads when the voice payload's -20- bytes.
>
> (That said, I'd be so much happer if the current trend 'ere wasn't to -avoid-
> delivering serial ports for the satellite service so we can run VoFR or PPP
> w/header compression - instead being presented IP connectivity only at
> either end, but you can't have everything..)
>
>
>
> Adrian
>   
Does anybody have any working v6 header suppression/compression working yet?

When I was doing VoIP over VSAT people kept trying to give me modems 
with Ethernet on them, not good for doing any header compression.

--
Leigh



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