Application Patrol Bandwidth Management Examples - ZyXEL Communications ZyWall USG 2000 User Manual

Finding Out More
• See Section 5.4.13 on page 95
• See Section 6.5 on page 115
policies with bandwidth restrictions.

29.1.3 Application Patrol Bandwidth Management Examples

Bandwidth management is very useful when applications are competing for limited
bandwidth. For example, say you have a WAN zone interface connected to an
ADSL device with a 8 Mbps downstream and 1 Mbps upstream ADSL connection.
The following sections give some simplified examples of using application patrol
policies to manage applications competing for that 1 Mbps of upstream bandwidth.
Here is an overview of what the rules need to accomplish. See the following
sections for more details.
• SIP traffic from VIP users must get through with the least possible delay
regardless of if it is an outgoing call or an incoming call. The VIP users must be
able to make and receive SIP calls no matter which interface they are connected
to.
• HTTP traffic needs to be given priority over FTP traffic.
• FTP traffic from the WAN to the DMZ must be limited so it does not interfere
with SIP and HTTP traffic.
• FTP traffic from the LAN to the DMZ can use more bandwidth since the
interfaces support up to 1 Gbps connections, but it must be the lowest priority
and limited so it does not interfere with SIP and HTTP traffic.
Figure 327 Application Patrol Bandwidth Management Example
SIP: Any to WAN
Outbound: 200 Kbps
Inbound: 200 Kbps
Priority: 1
Max. B. U.
HTTP: Any to WAN
Outbound: 100 Kbps
Inbound: 500 Kbps
Priority: 2
Max. B. U.
FTP: WAN to DMZ
Outbound: 100 Kbps
Inbound: 300 Kbps
Priority: 3
No Max. B. U.
ZyWALL USG 2000 User's Guide
for related information on these screens.
for an example of how to set up web surfing
SIP: WAN to Any
Outbound: 200 Kbps
Inbound: 200 Kbps
Priority: 1
Max. B. U.
FTP: LAN to DMZ
Outbound: 50 Mbps
Inbound: 50 Mbps
Priority: 4
No Max. B. U.
Chapter 29 Application Patrol
ADSL
Up: 1 Mbps
Down 8 Mbps
449