ZyXEL ZyWALL USG 20 User Guide - Page 458
Setting the Interface's Bandwidth, 1.3.2, SIP Any to WAN Bandwidth Management Example
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Chapter 28 Bandwidth Management 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 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 281 Bandwidth Management Example SIP: Any to WAN Outbound: 200 Kbps Inbound: 200 Kbps Priority: 1 Max. B. U. SIP: WAN to Any 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. ADSL Up: 1 Mbps Down 8 Mbps FTP: LAN1 to DMZ Outbound: 50 Mbps Inbound: 50 Mbps Priority: 4 No Max. B. U. 28.1.3.1 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. 28.1.3.2 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 ZyWALL 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 ZyWALL applies this limit before sending the traffic to LAN or DMZ. 458 ZyWALL USG 20/20W User's Guide
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