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Chapter 14 Trunks
ZyWALL USG 1000 User’s Guide
345
14.4 Trunk Technical Reference
Round Robin Load Balancing Algorithm
Round Robin scheduling services queues on a rotating basis and is activated only
when an interface has more traffic than it can handle. A queue is given an amount
of bandwidth irrespective of the incoming traffic on that interface. This queue then
moves to the back of the list. The next queue is given an equal amount of
bandwidth, and then moves to the end of the list; and so on, depending on the
number of queues being used. This works in a looping fashion until a queue is
empty.
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.
Ingress
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.
Egress
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.
OK Click OK to save your changes back to the ZyWALL.
Cancel Click Cancel to exit this screen without saving.
Table 80 Configuration > Network > Interface > Trunk > Add (or Edit) (continued)
LABEL DESCRIPTION