Chapter 14 Trunks

 

Table 80 Configuration > Network > Interface > Trunk > Add (or Edit) (continued)

 

LABEL

DESCRIPTION

 

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

This field displays with the least load first load balancing algorithm. It

 

Bandwidth

displays the maximum number of kilobits of data the ZyWALL is to allow

 

 

to come in through the interface per second.

 

 

 

 

Egress

This field displays with the least load first or spillover load balancing

 

Bandwidth

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.

 

 

 

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.

 

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ZyWALL USG 2000 User’s Guide