ZyXEL Communications ZYWALL USG 2000 Support Notes page 184

ZyWALL USG 2000 Support Notes
Tips: Policy Route rules are based on first match, first go. Thus, all your new rules should be
placed before the default policy route, which is the last one here.
4) The default policy route makes bandwidth management disabled. In any case if you want to
make sure that the bandwidth is guaranteed instead of just metering, you should check whether
every rule you have here has the bandwidth control enabled. This must include the default
route. Also, the sum of bandwidth in all your rules should not exceed the physical bandwidth
of your WAN interfaces(s). Otherwise the Bandwidth Management might not be able to
guarantee your bandwidth during a congestion. Let's assume that the max bandwidth of our
WAN is 1.5Mbps. Now we already spent 400kbps for SMTP, 800kbps for HTTP, and 100kbps
for SMTP. What left over is 200kbps available to us; thus, we can apply it for the remaining
traffic, which is our default route.
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