ZyXEL NBG-460N User Guide - Page 231
Priority Levels: Traffic With A Higher Priority Gets Through Faster, While Traffic With A Lower
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Chapter 17 Bandwidth Management 17.7.3 Bandwidth Management Priorities The following table describes the priorities that you can apply to traffic that the NBG-460N forwards out through an interface. Table 79 Bandwidth Management Priorities PRIORITY LEVELS: TRAFFIC WITH A HIGHER PRIORITY GETS THROUGH FASTER WHILE TRAFFIC WITH A LOWER PRIORITY IS DROPPED IF THE NETWORK IS CONGESTED. High Typically used for voice traffic or video that is especially sensitive to jitter (jitter is the variations in delay). Mid Typically used for "excellent effort" or better than best effort and would include important business traffic that can tolerate some delay. Low This is typically used for non-critical "background" traffic such as bulk transfers that are allowed but that should not affect other applications and users. See Appendix E on page 355 for commonly used services and port numbers. NBG-460N User's Guide 231