Using Bandwidth Management - ZyXEL Communications ZyWall 35 Support Notes

ZyWALL 35 Support Notes
After it's done, the outgoing VOIP traffic with source port 5060 from 192.168.1.x network will be always
processed by WAN2 except WAN2 is not available. Since we choose 'Use another interface when the
specified WAN interface is not available', when WAN2 is down, the traffic will be handled by WAN1
then.
For other outgoing traffic not defined in policy route will be assigned to either WAN1 or WAN2 when
traffic reaches session manager in ZyWALL.

Using Bandwidth Management

Why Bandwidth Management (BWM)?
Nowadays, we have many different traffic types for Internet applications. Some traffic may consume high
bandwidth, such as FTP (File Transfer Protocol), if you are downloading or uploading files with large size.
Some other traffic may not require high bandwidth, but they requires stable supply of bandwidth, such as
VoIP traffic. The VoIP quality would not be good, if all of the outgoing bandwidth is occupied via FTP.
Additionally, chances are that you would like to grant higher bandwidth for some body special who is
using specific IP address in your network. All of these are reasons why we need bandwidth management.
How Bandwidth Management in ZyWALL?
ZyWALL achieves BWM by classifying packets, and control when to send out the classified packets.
Bandwidth Management of ZyXEL appliances operates on the IP layer. The major step to configure
BWM is defining filter rules by fields of IP header or TCP/UDP port number. Then specify the volume of
53
All contents copyright (c) 2006 ZyXEL Communications Corporation.