ZyXEL Communications ZyWall USG 2000 User Manual page 464

Chapter 29 Application Patrol
Table 133 AppPatrol > Other > Edit (continued)
LABEL
Destination
Protocol
Bandwidth
Management
Inbound
kbps
Outbound
kbps
Priority
Maximize
Bandwidth
Usage
464
DESCRIPTION
Select a destination address or address group for whom this policy
applies. Select Create Object to configure a new one. Select any if the
policy is effective for every destination.
Select the protocol for which this condition applies. Choices are: TCP
and UDP. Select any to apply the policy to both TCP and UDP traffic.
Configure these fields to set the amount of bandwidth the application
can use. These fields only apply when Access is set to forward.
Type how much inbound bandwidth, in kilobits per second, this policy
allows the traffic to use. Inbound refers to the traffic the ZyWALL sends
to a connection's initiator.
If you enter 0 here, this policy does not apply bandwidth management
for the matching traffic that the ZyWALL sends to the initiator. Traffic
with bandwidth management disabled (inbound and outbound are both
set to 0) is automatically treated as the lowest priority (7).
If the sum of the bandwidths for routes using the same next hop is
higher than the actual transmission speed, lower priority traffic may not
be sent if higher priority traffic uses all of the actual bandwidth.
Type how much outbound bandwidth, in kilobits per second, this policy
allows the traffic to use. Outbound refers to the traffic the ZyWALL sends
out from a connection's initiator.
If you enter 0 here, this policy does not apply bandwidth management
for the matching traffic that the ZyWALL sends out from the initiator.
Traffic with bandwidth management disabled (inbound and outbound are
both set to 0) is automatically treated as the lowest priority (7).
If the sum of the bandwidths for routes using the same next hop is
higher than the actual transmission speed, lower priority traffic may not
be sent if higher priority traffic uses all of the actual bandwidth.
Enter a number between 1 and 7 to set the priority for traffic that
matches this policy. The smaller the number, the higher the priority.
Traffic with a higher priority is given bandwidth before traffic with a
lower priority.
The ZyWALL uses a fairness-based (round-robin) scheduler to divide
bandwidth between traffic flows with the same priority.
The number in this field is ignored if the incoming and outgoing limits
are both set to 0. In this case the traffic is automatically treated as being
set to the lowest priority (7) regardless of this field's configuration.
Enable maximize bandwidth usage to let the traffic matching this policy
"borrow" any unused bandwidth on the out-going interface.
After each application or type of traffic gets its configured bandwidth
rate, the ZyWALL uses the fairness- based scheduler to divide any
unused bandwidth on the out-going interface amongst applications and
traffic types that need more bandwidth and have maximize bandwidth
usage enabled.
ZyWALL USG 2000 User's Guide