User manual ZYXEL XGS4700-48F

[. . . ] XGS4700-48F Layer 3 Managed Stackable Gigabit Ethernet Switch Default Login Details IP Address http://192. 168. 0. 1 (Out-of-band MGMT port) http://192. 168. 1. 1 (In-band ports) User Name Password admin 1234 Firmware Version 4. 00 Edition 1, 04/2011 www. zyxel. com www. zyxel. com Copyright © 2011 ZyXEL Communications Corporation About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the Switch using the web configurator. Related Documentation · Web Configurator Online Help The embedded Web Help contains descriptions of individual screens and supplementary information. · Command Reference Guide The Command Reference Guide explains how to use the Command-Line Interface (CLI) and CLI commands to configure the Switch. Note: It is recommended you use the web configurator to configure the Switch. · Support Disc Refer to the included CD for support documents. Documentation Feedback Send your comments, questions or suggestions to: techwriters@zyxel. com. tw Thank you!The Technical Writing Team, ZyXEL Communications Corp. , 6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 30099, Taiwan. Need More Help? More help is available at www. zyxel. com. XGS4700-48F User's Guide 3 About This User's Guide · Download Library Search for the latest product updates and documentation from this link. Read the Tech Doc Overview to find out how to efficiently use the User Guide, Quick Start Guide and Command Line Interface Reference Guide in order to better understand how to use your product. [. . . ] WFQ is activated only when a port has more traffic than it can handle. Queues with larger weights get more guaranteed bandwidth than queues with smaller weights. By default, the weight for Q0 is 1, for Q1 is 2, for Q2 is 3, and so on. The weights range from 1 to 15 and the actual guaranteed bandwidth is calculated as follows: XGS4700-48F User's Guide 217 Chapter 22 Queuing Method 2(Weight -1) x 10 KB If the weight setting is 5, the actual quantum guaranteed to the associated queue would be as follows: 24 x 10KB = 160 KB 22. 1. 3 Weighted Round Robin Scheduling (WRR) Round Robin Scheduling services queues on a rotating basis and is activated only when a port has more traffic than it can handle. A queue is given an amount of bandwidth irrespective of the incoming traffic on that port. The next queue is given an equal amount of bandwidth, and then moves to the end of the list; and so on, depending on the number of queues being used. Weighted Round Robin Scheduling (WRR) uses the same algorithm as round robin scheduling, but services queues based on their priority and queue weight (the number you configure in the queue Weight field) rather than a fixed amount of bandwidth. WRR is activated only when a port has more traffic than it can handle. Queues with larger weights get more service than queues with smaller weights. This queuing mechanism is highly efficient in that it divides any available bandwidth across the different traffic queues and returns to queues that have not yet emptied. 218 XGS4700-48F User's Guide Chapter 22 Queuing Method 22. 2 Configuring Queuing Click Advanced Application > Queuing Method in the navigation panel. Figure 98 Advanced Application > Queuing Method The following table describes the labels in this screen. Table 55 Advanced Application > Queuing Method LABEL Port * DESCRIPTION This label shows the port you are configuring. Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings and then make adjustments on a port-by-port basis. Note: Changes in this row are copied to all the ports as soon as you make them. XGS4700-48F User's Guide 219 Chapter 22 Queuing Method Table 55 Advanced Application > Queuing Method (continued) LABEL Method DESCRIPTION Select SPQ (Strictly Priority Queuing), WFQ (Weighted Fair Queuing) or WRR (Weighted Round Robin). When the highest priority queue empties, traffic on the next highest-priority queue begins. Weighted Fair Queuing is used to guarantee each queue's minimum bandwidth based on their bandwidth weight (the number you configure in the Weight field). Queues with larger weights get more guaranteed bandwidth than queues with smaller weights. Weighted Round Robin Scheduling services queues on a rotating basis based on their queue weight (the number you configure in the queue Weight field). Queues with larger weights get more service than queues with smaller weights. Weight Q0-Q7 HybridSPQ LowestQueue When you select WFQ or WRR enter the queue weight here. Bandwidth is divided across the different traffic queues according to their weights. Select a queue (Q0 to Q7) to have the Switch use SPQ to service the subsequent queue(s) after and including the specified queue for the 1000Base-T, 1000Base-X and 10 Gigabit Ethernet ports. For example, if you select Q5, the Switch services traffic on Q5, Q6 and Q7 using SPQ. Select None to always use WFQ or WRR. Apply Click Apply to save your changes to the Switch's run-time memory. The Switch loses these changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring. [. . . ] Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners. Certifications Federal Communications Commission (FCC) Interference Statement This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: · This device may not cause harmful interference. XGS4700-48F User's Guide 469 Appendix B Legal Information · This device must accept any interference received, including interference that may cause undesired operations. FCC Warning This device has been tested and found to comply with the limits for a Class A digital switch, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial environment. This device generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. [. . . ]