ZyXEL Communications ZyWALL USG100-Plus User Manual page 94

Chapter 5 Managing Traffic
5.1.1 Bandwidth Allocation Example
Say a 10-person office has WAN1 connected to a 50 Mbps downstream and 5 Mbps upstream VDSL
line and you want to allocate bandwidth for the following:
• SIP: Up to 10 simultaneous 100 Kbps calls guaranteed
• Video conferencing: Up to 10 simultaneous 128 Kbps Skype video calls guaranteed
• Video streaming: up to 10 simultaneous 256 Kbps sessions
• HTTP: Internet access including downloading files for 10 users
• SMTP: 10 users sending email
• POP3: 10 users receiving email
• FTP: 10 users uploading and downloading files
Here is an example of allocating the any to WAN connection's inbound and outbound packet flows.
Enable Maximize Bandwidth Usage (Max B.U.) on a packet flow to set no limit on it and let it use
any available bandwidth on the out-going interface.
Table 9 50 Mbps / 5 Mbps Connection Any to WAN Bandwidth Allocation Example
PRIORITY AND APPLICATION
1 SIP
2 Video conferencing
3 Video streaming
4 HTTP
4 SMTP
4 POP3
5 FTP
Total guaranteed bandwidth:
* This application does not usually generate enough traffic in this direction to require management.
5.1.2 Setting the Interface's Bandwidth
Use the Configuration > Interface screens to set the WAN1 interface's upstream (egress)
bandwidth to be equal to (or slightly less than) what the connected device can support. This
example uses 5120 Kbps.
5.1.3 SIP Bandwidth Management
The most effective way to ensure the quality of SIP calls is to go to the Configuration > BWM
screen and enable BWM and select Enable Highest Bandwidth Priority for SIP Traffic. See the
following section if you prefer to configure specific bandwidth management rules for SIP instead.
5.1.4 SIP Any-to-WAN and WAN-to-Any Bandwidth Management Example
• Manage SIP traffic going to WAN1 from users on the LAN or DMZ.
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GUARANTEED K / MAXIMUM K OR MAX B.U.
INBOUND OUTBOUND
1000/2000 1000/2000
1280/3840 1280/3840
2560/3584 *
10240/46080 *
* 2048/Max B.U.
10240/Max B.U. *
10240/46080 792/3072
35560 Kbps 5120 Kbps
ZyWALL USG100-PLUS User's Guide