BayStack 450 10/100/1000 Series Switches302401-D Rev 00 1-11Cascade Module SlotThe Cascade Module slot allows you to attach an optional BayStack 400-ST1Cascade Module to the switch (see “Stack Operation” on page 1-23).You can connect up to eight BayStack 450 switches into a redundant stackconfiguration. BayStack 450 switches use a fail-safe cascade stacking architecturewhich, in the unlikely event of a switch failure, maintains the integrity of theremaining stack: all signals are looped back at the point of failure. Because eachunit in the stack has a full copy of the stack configuration, operation of the stackcontinues without affecting application connectivity.Any mix of up to eight BayStack 450 switches and BayStack 410-24T switchescan be stacked to provide a total of 224 ports (when all MDA slots are configuredwith the maximum port availability).Installation instructions are provided with each BayStack 400-ST1 CascadeModule (see Installing the BayStack 400-ST1 Cascade Module).See your Nortel Networks sales representative for ordering information.Cooling FansThe variable-speed cooling fans (not shown) are located on one side of theBayStack 450 switch to provide cooling for the internal components. When youinstall the switch, be sure to allow enough space on both sides of the switch foradequate air flow.FeaturesBayStack 450 switches provide wire-speed switching that allowshigh-performance, low-cost connections to full-duplex and half-duplex10/100/1000 Mb/s Ethernet local area networks (LANs).BayStack 450 switches offer the following features:• High-speed forwarding rate: up to 3 million packets per second (peak)• Store-and-forward switch: Full-performance forwarding at full line speed,using a 2.56 Gigabit/second switch fabric• Learning rate: 3 million addresses per second (peak)kombk.book Page 11 Tuesday, June 29, 1999 3:25 PM
