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SSG140 maxed out at about 75MB when traffic shaping is turned on

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All,

I'm seeing an issue where simply turning on traffic shaping without any policy or bandwith configuration on the interface results in a max throughput of about 75MB.

 

I have a 300mb internet connection connected to gig interface 0/8 and an inside gig switch connected to eth 0/9 (let's call these untrust and trust). Both interfaces are set to route but egress traffic (to the internet) NATs on a DIP port-xlate with a pool of SNAT IP's.

 

If I run some simple speed tests through the 140 I get throughput of about 300/300MB. As soon as I run "set traffice mode on" the throughput drops to about 75MB even though there are no max ingress/egress bandwidth settings on any interface and no shaping policies. If I set the max ingress/egress on the interface it doesn't have any impact unless I select something lower than about 75MB. I'm trying to max the interface at 300/300mb as I'm pushing too much traffic to the ISP and they're dropping packets. So I want to cap the two gig interfaces at 300/300mb

 

I'm running the latest firmware (6.3.0r25.0)

 

Any help is appreciated

Thanks!

Mark


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