User manual SMC 8126PL2-F

[. . . ] INSTALLATION GUIDE ta SMC8126PL2-F TigerSwitchTM 10/100/1000 L2-Lite SMB PoE Gigabit Switch TigerSwitch 10/100/1000 Installation Guide From SMC's Tiger line of feature-rich workgroup LAN solutions 20 Mason Irvine, CA 92618 Phone: (949) 679-8000 September 2009 Pub. # 150200000032A E092009-MW-R01 Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third parties which may result from its use. [. . . ] You can easily build on this basic configuration, adding direct full-duplex connections to workstations or servers. When the time comes for further expansion, just connect to another hub or switch using one of the Gigabit Ethernet ports built into the front panel, or a Gigabit Ethernet port on a plug-in SFP transceiver. In the figure below, the 26-port Gigabit Ethernet Switch is operating as a collapsed backbone for a small LAN. It is providing dedicated 10 Mbps full-duplex connections to workstations and 100 Mbps full-duplex connections to power users, and 1 Gbps full-duplex connections to servers. In addition, connected IP phones and wireless access points are receiving PoE power from the switch. . . . Servers 1 Gbps Full Duplex . . . Workstations 100 Mbps Full Duplex . . . Workstations 10 Mbps Full Duplex Figure 2-1 Collapsed Backbone 2-2 Application Examples 2 Network Aggregation Plan With 26 parallel bridging ports (i. e. , 26 distinct collision domains), a switch can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput. In the figure below, the 10/100/1000BASE-T ports are providing 1000 Mbps connectivity through Layer 2 switches. In addition, the switches are also connecting several servers at 1000 Mbps. Server Farm 10/100/1000 Mbps Segments . . . . . . Figure 2-2 Network Aggregation Plan 2-3 2 Network Planning Remote Connections with Fiber Cable Fiber optic technology allows for longer cabling than any other media type. A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a 1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-ZX link up to 100 km. This allows a switch to serve as a collapsed backbone, providing direct connectivity for a widespread LAN. A 1000BASE-SX SFP transceiver can be used for a high-speed connection between floors in the same building and a 1000BASE-LX SFP transceiver can be used for core connections between buildings in a campus setting. And for long-haul connections, a 1000BASE-ZX SFP transceiver can be used to reach another site up to 100 kilometers away. The figure below illustrates the switch connecting multiple segments with fiber cable. Headquarters Warehouse 1000BASE-LX SMF (5 kilometers) Server Farm Remote Switch 1000BASE-SX MMF (500 meters) 1000BASE-LX SMF (5 kilometers) Remote Switch . . . Research & Development 10/100/1000 Mbps Segments . . . . . . . . . Figure 2-3 Remote Connections with Fiber Cable 2-4 Application Examples 2 Making VLAN Connections This switch support VLANs which can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment. VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links. The switch also support multiple spanning trees which allow VLAN groups to maintain a more stable path between all VLAN members. This can reduce the overall amount of protocol traffic crossing the network, and provide a shorter reconfiguration time if any link in the spanning tree fails. Tagged Port Untagged Ports VLAN unaware switch R&D Finance VLAN aware switch Marketing Finance Testing VLAN 3 VLAN 4 VLAN 3 VLAN 1 VLAN 2 Figure 2-4 Making VLAN Connections Note: When connecting to a switch that does not support IEEE 802. 1Q VLAN tags, use untagged ports. 2-5 2 1. Network Planning Application Notes Full-duplex operation only applies to point-to-point access (such as when a switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode. For network applications that require routing between dissimilar network types, you can attach these switches directly to a multi-protocol router. As a general rule, the length of fiber optic cable for a single switched link should not exceed: · 1000BASE-SX: 550 m (1805 ft) for multimode fiber · 1000BASE-LX: 10 km (3. 1 miles) for single-mode fiber · 1000BASE-ZX: 100 km (62 miles) for single-mode fiber However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment. 2. [. . . ] This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, "The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling. " Note that when testing your cable installation, be sure to include all patch cables between switches and end devices. Adjusting Existing Category 5 Cabling to Run 1000BASE-T If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are basically three measures that can be applied to try and correct the problem: 1. Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables. [. . . ]