[nsp] Rate - limiting

Yuval Ben-Ari yuvalba at netvision.net.il
Sat May 22 14:30:59 EDT 2004


> > Did you let the router figure out those second and third 
> values, or did 
> > you calculate them?
> 
> We calculated them:
> 
> 1st burst number:  (500000 * 1.5) / 8
> 2nd burst number:  (500000 * 2.0) / 8
> 
> There's a Cisco page that describes this, but I can't 
> rememeber where.  Some 
> other kind list reader will doubtless come up with it.  (It 
> was IOS that
> lowered the actual bitrate number to 496000.  Dunno why.)

might you mean this page?: (watch for truncated link)
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fqos_c/fqcprt4/qcfpolsh.htm#1000977

2 more notes:
- if planning from scratch it might be better to consider MQC which is
IOS modern way for rate-limiting and replaces rate-limit command on new
platforms/hardware
- 3550 can do both ingress/egress policing (which I believe was the
poster's request)

-- Yuval




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