Chapter 26 BWM (Bandwidth Management)
USG20(W)-VPN Series User’s Guide
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Inbound kbps Type how much inbound bandwidth, in kilobits per second, this policy allows the traffic
to use. Inbound refers to the traffic the 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 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 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 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 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
Bandwidth Usage
This field displays when the inbound or outbound bandwidth management is not set to
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 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 Table
158 on page 408. The setting configured here overwrites existing priority settings.
Interface Choose a VLAN interface to which to apply the priority level for matching frames.
Related Setting
Log Select whether to have the 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 USG.
Cancel Click Cancel to exit this screen without saving your changes.
Table 159 Configuration > Bandwidth Management > Add/Edit
LABEL DESCRIPTION
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