Intel PCLA2152B - Manual

4 Connection Guidelines Connecting 100BASE-TX devices • Use Category 5 twisted-pair Ethernet (CAT 5 TPE) cable. • Always limit the distance between devices connected with TPE cable to 100 meters (the IEEE specification requires this). • Use a crossover cable to connect the hub to a switch. Use a str...

5 Example Configurations Mixed 10 Mbps and 100 Mbpsenvironment A stack of Express 10/100 Stackable Hubs can contain hubs runningat both 10 and 100 Mbps. However, the hubs running at 10 Mbps andthe hubs running at 100 Mbps are on separate network segments.These two segments can’t communicate with eac...

7 Bridging with the Express 10/100 Downlink The Express 10/100 Downlink has two ports that operate at either 10or 100 Mbps. Each port automatically senses the speed of the attacheddevice. All you need to do is set the speed of the hubs. Noconfiguration of your network operating system is needed. Int...

8 Extending the 100 Mbps network topology You can extend the network topology only by connecting hubs to aswitch, bridge, or router. You can’t extend the topology by daisy-chaining hubs together. In the example below, the network diameter isextended to 400 meters by connecting the two hub stacks to ...

9 Extending the 10 Mbps network topology To extend the 10BASE-T network topology, you can attach hubs to aswitch or daisy-chain the hubs using TPE cabling. If you attach a stack of hubs to a switch, each stack gets its own10 Mbps of bandwidth. Attaching hubs to a switch The illustration below shows ...

10 Understanding LEDs Port LEDs The LEDs above a port provide information about the port’sconfiguration and status. Green LED(left side) Amber LED(right side) LED Status Meaning Green Solid Port has a link. Blinking Receive activity detected on port. Off No link detected. Amber Solid Port is disable...

11 Unit LEDs Unit LEDs indicate the status of a hub’s power supply, hub speed,collision occurrences in a hub or stack of hubs, and whether a hub ismanaged. 10BASE-T 100BASE-TX Collision Managed Status Power Change hub speed LED Status Meaning 10BASE-T On Hub is operating at 10 Mbps. 100BASE-TX On Hu...

12 Cabling Requirements Incorrect cabling is often the cause of network problems. Read thenext two pages if you’re unsure of your requirements. 100BASE-TX requirements The 100BASE-TX Fast Ethernet specification requires you useCAT 5 unshielded twisted-pair (UTP) or shielded twisted-pair (STP)cabling...

13 Straight-through vs. crossover cables Ports on the hub are wired MDI-X (media dependent interfacecrossover) so you can use a straight-through cable when connecting toa workstation or server (network adapter cards are wired MDI). Fordirect connection to another MDI-X port (hub and switch ports), y...

14 Troubleshooting No link (green LED is off). • Remove the cable and plug it in again. Wait up to six seconds for a link. • If you’re using the wrong type of cable, either straight-through or crossover, the green LED above the port will not come on. Usethe other type of cable. • Make sure the devic...

15 Frequently Asked Questions I have 10 Mbps and 100 Mbps hubs connected with an IntelCascade Cable. Can they talk to each other? No. All hubs running at 100 Mbps are in one collision domain (orsegment) and all hubs running at 10 Mbps are in a separate collisiondomain. See pages 5-7 for bridging opt...

17 Limited Hardware Warranty Intel warrants to the original owner that the hardware product delivered in this package will be free from defects in material andworkmanship for three (3) years following the latter of: (i) the date of purchase only if you register by returning the registrationcard as i...