User manual D-LINK DEM-311GT BROCHURE

[. . . ] In addition to offering many versatile software functions, these switches also provide fiber uplinks to connect together small groups of users such as in different classrooms or departments spread across on a campus or between buildings. The DES-3000 series includes many features not found in other switches of the same class, such as IP-MAC-port binding user access screening, traffic segmentation and up to 255VLAN (802. 1Q). In addition, it also supports 802. 1x port-based/ MAC-based access control. [. . . ] To prevent hackers from overwhelming the switch with unnecessary workload, the DES-3000 provides the CPU Interface Filtering function to filter out vicious packets before they reach the CPU. For Quality of Service, it supports 802. 1p Priority Queues and packet classification based on TOS, DSCP and MAC DA. To enhance network resilience, the DES-3000 provides 802. 1D Spanning Tree/802. 1w Rapid Spanning Tree, STP loopback detection, and broadcast storm control. It provides 802. 3ad Link Aggregation port trunks for load sharing/redundancy backup in a switch cascading or server attachment configuration. Network administrators can define throughput levels for each port to manage bandwidth. The bandwidth limiting feature provides fine granularity with the ability to define limits down to 64Kbps segments. When applied to control of broadcast storms infected with virus, this feature can limit the level of damage a virus attack can do to the network. The switch provides IGMP snooping to control multicast transmission, and port mirroring to facilitate diagnostics. distance 550m, 3. 3V operating voltage SFP transceiver, 1000BASE-SX standard, multi-mode fiber, max. distance 2km, 3. 3V operating voltage SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 50km, 3. 3V operating voltage SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 80km, 3. 3V operating voltage WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 10 km, 3. 3V operating voltage, Tx wavelength 1550 nm, Rx wavelength 1310 nm WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 10 km, 3. 3V operating voltage, Tx wavelength 1310 nm, Rx wavelength 1550 nm WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 40 km, 3. 3V operating voltage, Tx wavelength 1550 nm, Rx wavelength 1310 nm WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 40 km, 3. 3V operating voltage, Tx wavelength 1310 nm, Rx wavelength 1550 nm D-Link Worldwide Offices U. S. A Canada Europe (U. [. . . ] distance 40 km, 3. 3V operating voltage, Tx wavelength 1550 nm, Rx wavelength 1310 nm WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. distance 40 km, 3. 3V operating voltage, Tx wavelength 1310 nm, Rx wavelength 1550 nm D-Link Worldwide Offices U. S. A Canada Europe (U. K. ) Germany France Netherlands Belgium & Luxemburg Switzerland Austria Sweden Denmark Norway Finland Italy Spain Portugal Greece Czech Republic Hungary Poland TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: 1-800-326-1688 1-905-8295033 44-(0)20-8955-9000 49-(0)6196-77990 33 (0)1 30 23 86 88 31-(0)10-282-1445 32(0)2 517 7111 41 (0)1 832 11 00 43 (0)1 240 27 270 46-(0)8 564 619 00 45-43-969040 47 99 300 100 358-10 309 8840 39-02-2900-0676 34 93 409 0770 351 21 8688493 30 210 9914 512 420 224 247 500 36 (0)1 461 30 00 48 (0)22 583 92 75 FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: 1-866-743-4905 1-905-8295223 44-(0)20-8955-9001 49-(0)6196-7799300 33 (0)1 30 23 86 89 31-(0)10-282-1331 32(0)2 517 6500 41 (0)1 832 11 01 43 (0)1 240 27 271 46-(0)8 564 619 01 45-43-424347 47 22 30 90 85 358-10 309 8841 39-02-2900-1723 34 93 491 0795 351 21 8622492 30 210 9916902 420 224 234 967 36 (0)1 461 30 04 48 (0)22 583 92 76 Bulgaria Romania Singapore Australia India Middle East (Dubai) Egypt Turkey Iran Pakistan Israel Latin America Brazil South Africa Russia Japan Korea China Taiwan Headquarters TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: TEL: 359 2 958 22 42 40(0)21 320 23 05 65-6774-6233 61-2-8899-1800 91-22-2652 6696 971-4-391-6480 202-291-9035 90-212-289-5659 90-212-289-5659 92-21-454-8158 972-9-9715700 56-2-5838-950 55-11-2185-9300 27-12-665-2165 7-495-744-0099 81-3-5781-0963 82-2-890-5491 86-10-58635800 886-2-6600-0123 886-2-6600-0123 FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: FAX: 359 2 958 65 57 40(0)21 320 23 07 65-6774-63225 61-2-8899-1868 91-22-2652 8914 971-4-390-8881 202-291-9051 90-212-289-7606 90-212-289-7606 92-21-453-5103 972-9-9715601 56-2-5838953 55-11-2185-9322 27-12-665-2186 7-495-744-0099 81-3-5781-0965 82-2-890-549 86-10-58635799 886-2-6600-3939 886-2-6600-9898 3 Rev. [. . . ]