ZyXEL Communications ZYWALL USG 20 Manual page 294

Chapter 12 Trunks
Each field is described in the table below.
Table 77 Configuration > Network > Interface > Trunk > Add (or Edit)
LABEL
Name
Load
Balancing
Algorithm
Load
Balancing
Index(es)
Add
Edit
Remove
Move
#
Member
Mode
294
DESCRIPTION
This is read-only if you are editing an existing trunk. When adding a new
trunk, enter a descriptive name for this trunk. You may use 1-31
alphanumeric characters, underscores(
character cannot be a number. This value is case-sensitive.
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 field is available if you selected to use the Least Load First or
Spillover method.
Select Outbound, Inbound, or Outbound + Inbound to set the traffic
to which the ZyWALL applies the load balancing method. Outbound
means the traffic traveling from an internal interface (ex. LAN) to an
external interface (ex. WAN). Inbound means the opposite.
The table lists the trunk's member interfaces. You can add, edit, remove,
or move entries for user configured trunks.
Click this to add a member interface to the trunk. Select an interface and
click Add to add a new member interface after the selected member
interface.
Double-click an entry or select it and click Edit to open a screen where
you can modify the entry's settings.
To remove a member interface, select it and click Remove. The ZyWALL
confirms you want to remove it before doing so.
To move an interface to a different number in the list, click the Move
icon. In the field that appears, specify the number to which you want to
move the interface.
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.
Click this icon to open a screen where you can select an interface to be a
group member.
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.
), or dashes (-), but the first
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ZyWALL USG 20/20W User's Guide