FreeBSD box as router adding latency

Charles Swiger cswiger at
Thu Feb 26 15:24:47 PST 2004

On Feb 26, 2004, at 5:59 PM, Aloha Guy wrote:
> Charles Swiger <cswiger at> wrote:
>> There's your issue right there: if you care about the millisecond 
>> level
>> granularity of network traffic going by this router, you ought to set
>> HZ to 1000 as documented in "man dummynet".
[ ... ]
> Knew I forgot to read something.  I guess I forgot all about dummynet 
> is the one doing the traffic shaping as I never used traffic shaping 
> on the other boxes when they were used as both Ethernet and T1 
> routers.  I've always had NMBCLUSERS set to 32768 which I assume is 
> fine.

Thats a lot of NMBCLUSTERS, but if you've got the memory you should be 

> Also, is there a way to use two NICs like a xl0 and a fxp0 and bond 
> them together with just one IP?

Yes, netgraph.  See "man ng_one2many"....


More information about the freebsd-questions mailing list