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DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch prioritizing the queue and allowing for an uninterrupted stream of packets, which optimizes the use of bandwidth available for the video conference. Understanding QoS The Switch has four priority queues. These priority queues are labeled as 3, the high queue to 0, the lowest queue. The eight priority tags, specified in IEEE 802.1p are mapped to the Switch's priority tags as follows: • Priority 0 is assigned to the Switch's Q1 queue. • Priority 1 is assigned to the Switch's Q0 queue. • Priority 2 is assigned to the Switch's Q0 queue. • Priority 3 is assigned to the Switch's Q1 queue. • Priority 4 is assigned to the Switch's Q2 queue. • Priority 5 is assigned to the Switch's Q2 queue. • Priority 6 is assigned to the Switch's Q3 queue. • Priority 7 is assigned to the Switch's Q3 queue. For strict priority-based scheduling, any packets residing in the higher priority queues are transmitted first. Multiple strict priority queues empty based on their priority tags. Only when these queues are empty, are packets of lower priority transmitted. For weighted round robin queuing, the number of packets sent from each priority queue depends upon the assigned weight. For a configuration of 8 CoS queues, A~H with their respective weight value: 8~1, the packets are sent in the following sequence: A1, B1, C1, D1, E1, F1, G1, H1, A2, B2, C2, D2, E2, F2, G2, A3, B3, C3, D3, E3, F3, A4, B4, C4, D4, E4, A5, B5, C5, D5, A6, B6, C6, A7, B7, A8, A1, B1, C1, D1, E1, F1, G1, H1. For weighted round robin queuing, if each CoS queue has the same weight value, then each CoS queue has an equal opportunity to send packets just like round robin queuing. For weighted round-robin queuing, if the weight for a CoS is set to 0, then it will continue processing the packets from this CoS until there are no more packets for this CoS. The other CoS queues that have been given a nonzero value, and depending upon the weight, will follow a common weighted round-robin scheme. Remember that the DES-3526 has four priority queues (and four Classes of Service) for each port on the Switch. Port Bandwidth The bandwidth control settings are used to place a ceiling on the transmitting and receiving data rates for any selected port. In the Configuration folder, click Port Bandwidth, to view the window shown below. 73
DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch Figure 6- 43. Bandwidth Settings window The following parameters can be set or are displayed: Parameter Description From/To A consecutive group of ports may be configured starting with the selected port. Type This drop-down menu allows you to select between RX (receive), TX (transmit), and Both. This setting will determine whether the bandwidth ceiling is applied to receiving, transmitting, or both receiving and transmitting packets. no_limit This drop-down menu allows you to specify that the selected port will have no bandwidth limit. Enabled disables the limit. Rate This field allows you to enter the data rate, in kb/s, that will be the limit for the selected port. Click Apply to set the bandwidth control for the selected ports. Results of configured Bandwidth Settings will be displayed in the Port Bandwidth Table. 74
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D-Link DES-3526/DES-3526DC Managed
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Table of Contents Preface..........
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QoS................................
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Download Configuration File .......
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DES-3526 / DES-3526DC Fast Ethernet
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Introduction Gigabit Ethernet Techn
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LED Indicators DES-3526 / DES-3526D
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Installation Package Contents Befor
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Connecting The Switch DES-3526 / DE
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Password Protection DES-3526 / DES-
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MIBs DES-3526 / DES-3526DC Fast Eth
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Page 41 and 42: DHCP Manual Subnet Mask Default Gat
Page 43 and 44: MAC Address Aging Time DES-3526 / D
Page 47 and 48: To configure a mirror port: DES-352
Page 53 and 54: MAC Notification Port Settings DES-
Page 57 and 58: The following parameters can be set
Page 63 and 64: Parameter Description DES-3526 / DE
Page 71 and 72: Multicast Port Filtering Mode DES-3
Page 81 and 82: GVRP Setting DES-3526 / DES-3526DC
Page 85: DES-3526 / DES-3526DC Fast Ethernet
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Page 97 and 98: from GMT in +/- HH:MM DES-3526 / DE
Page 113 and 114: Authenticator DES-3526 / DES-3526DC
Page 115 and 116: 802.1X Client 802.1X Client DES-352
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Parameter Description DES-3526 / DE
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Local Enable Password DES-3526 / DE
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SSH Algorithm DES-3526 / DES-3526DC
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Traps DES-3526 / DES-3526DC Fast Et
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The following parameters can set: P
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The following parameters can set: P
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The following field can be set: Par
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UMB Cast (RX) DES-3526 / DES-3526DC
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The following fields may be set or
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Parameter Description DES-3526 / DE
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Maintenance TFTP Services Switch Hi
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Commander Switch Icon DES-3526 / DE
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Candidate Switch Icon DES-3526 / DE
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Group DES-3526 / DES-3526DC Fast Et
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Cables and Connectors DES-3526 / DE
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Glossary DES-3526 / DES-3526DC Fast
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This limited warranty provided by D
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Trademarks: D-Link is a registered
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D-Link Europe Limited Product Warra
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D-Link Europe Limited Produktgarant
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D-Link Europe a limité la garantie
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Garantía limitada del producto D-L
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D-Link Europe Termini di Garanzia d
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Technical Support You can find soft
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Technical Support You can find upda
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Asistencia Técnica D-Link Latin Am
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友冠技術支援台灣地區用
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Assistance technique Vous trouverez
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Supporto tecnico Gli ultimi aggiorn
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Pomoc techniczna Najnowsze wersje o
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Technikai Támogatás Meghajtó pro
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Teknisk Support Du finder software
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技术支持办公地址:北京市
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Registration Card (All Countries an
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