ZyXEL Communications USG40 User Manual page 605

LAN1
to WAN Connection and Packet Directions
Figure 430
LAN1
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 431 LAN1 to WAN, Outbound 200 kbps, Inbound 500 kbps
Outbound
200 kbps
Bandwidth Management Priority
• The ZyWALL/USG gives bandwidth to higher-priority traffic first, until it reaches its configured
bandwidth rate.
• Then lower-priority traffic gets bandwidth.
• The ZyWALL/USG uses a fairness-based (round-robin) scheduler to divide bandwidth among
traffic flows with the same priority.
• The ZyWALL/USG automatically treats traffic with bandwidth management disabled as priority 7
(the lowest priority).
Chapter 34 BWM (Bandwidth Management)
Connection
BWM
Outbound
Inbound
BWM
Inbound
500 kbps
ZyWALL/USG Series User's Guide
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