ZyXEL Communications USG110, Руководство пользователя

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Chapter 35 BWM (Bandwidth Management)
ZyWALL USG Series User’s Guide
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Figure 483
LAN1
to WAN Connection and Packet Directions
Outbound and Inbound Bandwidth Limits
You can limit an application’s outbound or inbound bandwidth. This limit keeps the traffic from using up
too much of the out-going interface’s bandwidth. This way you can make sure there is bandwidth for
other applications. When you apply a bandwidth limit to outbound or inbound traffic, each member of
the out-going zone can send up to the limit. Take a LAN1 to WAN policy for example.
• Outbound traffic is limited to 200 kbps. The connection initiator is on the LAN1 so outbound means the
traffic traveling from the LAN1 to the WAN. Each of the WAN zone’s two interfaces can send the limit
of 200 kbps of traffic.
• Inbound traffic is limited to 500 kbs. The connection initiator is on the LAN1 so inbound means the
traffic traveling from the WAN to the LAN1.
Figure 484 LAN1 to WAN, Outbound 200 kbps, Inbound 500 kbps
Bandwidth Management Priority
• The Zyxel Device gives bandwidth to higher-priority traffic first, until it reaches its configured
bandwidth rate.
• Then lower-priority traffic gets bandwidth.
• The Zyxel Device uses a fairness-based (round-robin) scheduler to divide bandwidth among traffic
flows with the same priority.
• The Zyxel Device automatically treats traffic with bandwidth management disabled as priority 7 (the
lowest priority).
Inbound
Outbound
500 kbps
200 kbps