ZyXEL UAG4100 User Guide - Page 366

CHAPTER 31 Bandwidth Management 31.1 Overview Bandwidth management provides a convenient way to manage the use of various services on the network. It manages general protocols (for example, HTTP and FTP) and applies traffic prioritization to enhance the performance of delay-sensitive applications like voice and video. 31.1.1 What You Can Do in this Chapter Use the BWM screens (see Section 31.2 on page 370) to control bandwidth for services passing through the UAG, and it identifies the conditions that refine this. 31.1.2 What You Need to Know When you allow a service, you can restrict the bandwidth it uses. It controls TCP and UDP traffic. Use policy routes to manage other types of traffic (like ICMP). Note: Bandwidth management in policy routes has priority over TCP and UDP traffic policies. If you want to use a service, make sure both the security policy allow the service's packets to go through the UAG. Note: The UAG checks security policies before it checks bandwidth management rules for traffic going through the UAG. Bandwidth management examines every TCP and UDP connection passing through the UAG. Then, you can specify, by port, whether or not the UAG continues to route the connection. BWM Type The UAG supports three types of bandwidth management: Shared, Per user and Per-Source-IP. The Shared BWM type is selected by default in a bandwidth management rule. All matched taffic shares the bandwidth configured in the rule. If the BWM type is set to Per user in a rule, each user that matches the rule can use up to the configured bandwidth by his/her own. Select the Per-Source-IP type when you want to set the maximum bandwidth for traffic from an individual source IP address. In the following example, you configure a Per user bandwidth management rule for billing-users to limit outgoing traffic to 300 kbs. Then all billing-users (A, B and C) can send 300 kbps of traffic. UAG Series User's Guide 366