ZyXEL Communications ZyWall 110 User Manual page 454

Configuration > Bandwidth Management > Add/Edit
Table 187
LABEL DESCRIPTION
Inbound kbps Type how much inbound bandwidth, in kilobits per second, this policy allows the traffic
to use. Inbound refers to the traffic the ZyWALL/USG 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/USG 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.
Outbound kbps Type how much outbound bandwidth, in kilobits per second, this policy allows the
traffic to use. Outbound refers to the traffic the ZyWALL/USG 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/USG 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.
Priority This field displays when the inbound or outbound bandwidth management is not set to
0. 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/USG 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.
Maximize This field displays when the inbound or outbound bandwidth management is not set to
Bandwidth Usage
0 and the BWM Type is set to Shared. Enable maximize bandwidth usage to let the
traffic matching this policy "borrow" all unused bandwidth on the out-going interface.
After each application or type of traffic gets its configured bandwidth rate, the
ZyWALL/USG uses the fairness-based scheduler to divide any unused bandwidth on
the out-going interface among applications and traffic types that need more
bandwidth and have maximize bandwidth usage enabled.
Maximum If you did not enable Maximize Bandwidth Usage, then type the maximium unused
bandwidth that traffic matching this policy is allowed to "borrow" on the out-going
interface (in Kbps), here.
802.1P Marking Use 802.1P to prioritize outgoing traffic from a VLAN interface.
Priority Code This is a 3-bit field within a 802.1Q VLAN tag that's used to prioritize associated
outgoing VLAN traffic. "0" is the lowest priority level and "7" is the highest. See
186 on page
Interface Choose a VLAN interface to which to apply the priority level for matching frames.
Related Setting
Log Select whether to have the ZyWALL/USG generate a log (log), log and alert (log
alert) or neither (no) when any traffic matches this policy.
OK Click OK to save your changes back to the ZyWALL/USG.
Cancel Click Cancel to exit this screen without saving your changes.
Chapter 27 BWM (Bandwidth Management)
451. The setting configured here overwrites existing priority settings.
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