User's Manual

Chapter 25 Bandwidth Management
ISG50 User’s Guide
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• FTP traffic from the LAN1 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 262 Bandwidth Management Example
25.1.3.1 Setting the Interface’s Bandwidth
Use the interface screens to set the WAN zone interface’s upstream bandwidth to be equal to (or
slightly less than) what the connected device can support. This example uses 1000 Kbps.
25.1.3.2 SIP Any to WAN Bandwidth Management Example
• Manage SIP traffic going to the WAN zone from a VIP user on the LAN or DMZ.
• Outbound traffic (to the WAN from the LAN and DMZ) is limited to 200 kbps. The ISG50 applies
this limit before sending the traffic to the WAN.
• Inbound traffic (to the LAN and DMZ from the WAN) is also limited to 200 kbps. The ISG50
applies this limit before sending the traffic to LAN or DMZ.
ADSL
Up: 1 Mbps
Down 8 Mbps
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.
SIP: WAN to Any
Outbound: 200 Kbps
Inbound: 200 Kbps
Priority: 1
Max. B. U.
FTP: LAN1 to DMZ
Outbound: 50 Mbps
Inbound: 50 Mbps
Priority: 4
No Max. B. U.
ISG