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Re: [NETVAERK] ligelig fordeling af trafik på interfaces



Jeg satte et boligforeningsnetvaerk op for et par aar siden, og der
sad vi med akkurat samme problem (to udgaaende TDC netforbindelser).
Der er to loesningsmodeller:

a) Hvis du vil bundle to interfaces paa to maskiner, hvor du har root
paa begge, saa kan det lade sig goere, saa de 2 forbindelser ses som
een. Se evt her:
http://www.linuxguruz.com/iptables/howto/2.4routing-10.html

En transfer af en fil vil herved kunne finde sted med 2 x 100 mbps = 200.

b) Hvis du kun kan kontollere den ene side (eller maskinen skal snakke
med flere end en enkelt maskine), saa maa du kigge paa at balancere
trafikken over de 2 interfaces men paa et maade, hvor en connection,
der begynder paa et interface fortsaetter hele vejen igennen. En
transfer af en enkelt fil vil her kun kunne finde sted ved 100 mbps,
men det er muligt at koere to transfers med hver 100 mbps.

Hvis maskinen skal hoste services, som genererer masser af trafik og
tilgaaes af mange klienter, saa vil jeg foreslaa en gang DNS
roundrobin, hvor din DNS server vil give skiftevis den ene og den
anden adresse naar den spoerges om service navnet.

On 08/05/07, Keld Jørn Simonsen <sslug@sslug> wrote:
Hej!

Jeg kunne godt tænke mig at øge båndbredden på en maskine, ved at
sætte to 100 mbit/s interfaces på den. Og så fordele den udgående
trafik ligeligt på begge interfaces. Kan man det, fx med noget tc?
Dvs når jeg sender en pakke ud til den samme destination, så skal den
skiftesvist sendes via det ene interface og så via det andet interface.
Evt generelt for n antal interfaces.

Hilsen
keld



 
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