ZyXEL Communications UAG4100 User Manual page 157

Each field is described in the table below.
Table 70 Configuration > Network > Interface > Trunk > Add (or Edit)
LABEL DESCRIPTION
Name 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
( ), or dashes (-), but the first character cannot be a number. This value is case-sensitive.
_
Load Balancing Select a load balancing method to use from the drop-down list box.
Algorithm
Select Weighted Round Robin to balance the traffic load between interfaces based on
their respective weights. An interface with a larger weight gets more chances to transmit
traffic than an interface with a smaller weight. For example, if the weight ratio of wan1 and
ppp0 interfaces is 2:1, the UAG chooses wan1 for 2 sessions' traffic and ppp0 for 1 session's
traffic in each round of 3 new sessions.
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).
Load Balancing This field is available if you selected to use the Least Load First or Spillover method.
Index(es)
Select Outbound, Inbound, or Outbound + Inbound to set the traffic to which the UAG
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.
Add 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.
Edit Select an entry and click Edit to modify the entry's settings.
Remove To remove a member interface, select it and click Remove. The UAG confirms you want to
remove it before doing so.
Move 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.
Member Click this table cell and select an interface to be a group member.
Mode Click this table cell and select Active to have the UAG always attempt to use this
connection.
Select Passive to have the UAG 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 UAG assigns to each member interface.
The higher an interface's weight is (relative to the weights of the interfaces), the more
sessions that interface should handle.
Ingress This is reserved for future use.
Bandwidth
This field displays with the least load first load balancing algorithm. It displays the
maximum number of kilobits of data the UAG is to allow to come in through the interface
per second.
Note: You can configure the bandwidth of an interface in the corresponding interface edit
screen.
Chapter 11 Trunks
UAG4100 User's Guide
157