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Chapter 11 Trunks
ZyWALL USG 100/200 Series User’s Guide
274
Figure 192 Network > Interface > Trunk > Edit
Each field is described in the table below.
Table 88 Network > Interface > Trunk > Edit
LABEL DESCRIPTION
Name This is the descriptive name for this trunk.
Load Balancing
Algorithm
Select a load balancing method to use from the drop-down list box.
Select Weighted Round Robin to balance the traffic load between interfaces based
on their respective weights. Weighted round robin is activated only when the first
group member interface has more traffic than it can handle.
Select Least Load First to send new session traffic through the least utilized trunk
member.
Select Spillover to send network traffic through the first interface in the group
member list until there is enough traffic that the second interface needs to be used
(and so on).
# This column displays the priorities of the group’s interfaces. The order of the
interfaces in the list is important since they are used in the order they are listed.
Member Click this icon to open a screen where you can select an interface to be a group
member.
Mode Select Active to have the ZyWALL always attempt to use this connection.
Select Passive to have the ZyWALL only use this connection when all of the
connections set to active are down. You can only set one of a group’s interfaces to
passive mode.
Weight This field displays with the weighted round robin load balancing algorithm. Specify
the weight (1~10) for the interface. The weights of the different member interfaces
form a ratio. This ratio determines how much traffic the ZyWALL sends through each
member interface. The higher an interface’s weight is (relative to the weights of the
interfaces), the more traffic the ZyWALL sends through that interface.
Downstream
Bandwidth
This field displays with the least load first load balancing algorithm. It displays the
maximum number of kilobits of data the ZyWALL is to allow to come in through the
interface per second.
Upstream
Bandwidth
This field displays with the least load first or spillover load balancing algorithm.It
displays the maximum number of kilobits of data the ZyWALL is to send out through
the interface per second.
Spillover This field displays with the spillover load balancing algorithm. Specify the maximum
bandwidth of traffic in kilobits per second (1~1048576) to send out through the
interface before using another interface. When this spillover bandwidth limit is
exceeded, the ZyWALL sends new session traffic through the next interface. The
traffic of existing sessions still goes through the interface on which they started.
The ZyWALL uses the group member interfaces in the order that they are listed.