Bay BayStack 400-ST1 Installation Manual

Text of Bay BayStack 400-ST1 User Guide:

• Bay BayStack 400-ST1, 5 Cascade A Out Connector Provides an attachment point for connecting this unit to another unit via the cascade cable. A return cable from another unit’s Cascade A Out connector to this unit’s Cascade A In connector completes the stack connection (see the example shown in Figure 3 ). Unit Select Switch The Unit Select switch (up = Base) determines the base unit for the stack configuration (see “ Base Unit Description” on page 7). The Unit Select switch status is displayed on the BayStack 450 LED display panel (see the Using the BayStack 450 10/100/1000 Series Switch guide for details). When in the Base (up) position, all ot

• 21 7. Connect the units using the supplied cascade cables (Figure 10 ). a. Connect one end of a cascade cable to the Cascade A Out connector on the Base Unit (unit 1). Figure 10. Installing Cascade Cables Cascade A Out Unit 2 1 = Base unit 2 = Last unit 3 = Cascade cable (PN 303978-A) 4 = Cascade max-return cable (PN 303979-A) BS0039A Cascade A InUnit Selec

• Bay BayStack 400-ST1, 12 Figure 5. Stack Down Configuration Example Unit 2 1 = Base unit 2 = Last unit 3 = Cascade cable (PN 303978-A) 4 = Cascade max-return cable (PN 303979-A) BS0034A Unit 1 Unit 4 Unit 3 Unit 6 Unit 5 Unit 8 Unit 7 2 1 I n O u t 4 3

• 18 Figure 8. Installing a 400-ST1 Cascade Module 4. Press the module firmly into the chassis slot. Be sure that the module is fully seated into the mating connector. 5. Secure the module in the chassis by tightening the thumb screws on the module front panel. 6. Repeat Steps 1 to 5 for each switch that is to be configured with the 400-ST1 Cascade Module. 7. Proceed to the next section

• Bay BayStack 400-ST1, 2 Find the Bay Networks product for which you need documentation. Then locate the specific category and model or version for your hardware or software product. Using Adobe Acrobat Reader, you can open the manuals and release notes, search for the sections you need, and print them on most standard printers. You can download Acrobat Reader free from the Adobe Systems Web site, www.adobe.com. This guide also describes how to connect 400-ST1 Cascade Modules to create a stack of (up to eight) Ba

• 32 4. Connect a cascade cable from the Cascade A Out connector of unit 4 to the Cascade A In connector of unit 5. 5. Connect a cascade cable from the Cascade A Out connector of unit 5 to the Cascade A In connector of unit 6. 6. Reconnect the cascade max-return cable from unit 1 to the Cascade A Out connector of unit 6. 7. Renumber the order of the units for the new

• Bay BayStack 400-ST1, 3 Contents of Shipment Each BayStack 400-ST1 shipment includes the following items (Figure 1 ): • One BayStack 400-ST1 Cascade Module • One .30 meter (12 inch) cascade cable; part number 303978-A. • This guide (Installing the BayStack 400-ST1 Cascade Module). Figure 1. Contents of Shipment For stacking three or more units (maximum 8 units per stack), order the optional 1 meter (39.27 inch) cascade max-return cable (Bay Networks Order No. AL2018001). BS0030A BayStack 400-ST1 cascade module 0.30 m (12 in.) cascade cable (PN 303978-A) Optional: 1 m (39.27 in.) cascade

• Bay BayStack 400-ST1, 22 b. Connect the other end of the cascade cable to the cascade A In connector on the unit just below the base unit (unit 2), or just above the base unit if cascading up the stack. c. Continue attaching the cascade cables until the last unit is configured. A maximum of eight units can be configured per stack. d. At the last unit in the stack, connect one end of a cascade max-return cable to the Cascade A Out connector. Connect the other end of the cascade max-return cable to the cascade A In connector on the base unit. When stacking 3 or more units, the (optional) 1 meter (39.27 inch) cascade max-return cable is required (Bay Networks Part Number 303979-A). 8. B

• Bay BayStack 400-ST1, 28 Adding Units to the Stack This section describes how to add one or more units to the middle of a stack or to the end of a stack. Adding Units to the Middle of a Stack To add one or more units to the middle of a stack, complete the following steps: 1. Determine the position of the new units in the existing stack (Figure 12 ). For example, the shaded units (units 5 and 6) in Figure 12 show two new units to be added to the stack. The new units are numbered as unit 5 and unit 6 because they are additions to an existing 4 unit stack. 2. Disconnect the cascade cable from the C

• Bay BayStack 400-ST1, 15 Figure 6. Redundant Cascade Stacking Feature Unit 2 1 = Base unit 2 = Last unit 3 = Cascade cable (PN 303978-A) 4 = Cascade max-return cable (PN 303979-A) BS0035A Cascade A Out Cascade A In Unit 1 Unit 5 Unit 4 Unit 3 2 1 B A 4 3

• Bay BayStack 400-ST1, 17 Installing the 400-ST1 Cascade Module The Cascade Module slot on the BayStack 450 switch can accommodate a single 400-ST1 Cascade Module. To install a 400-ST1 Cascade Module into the Cascade Module slot, follow these steps: 1. Unplug the AC power cord from the back of the switch. 2. Loosen the thumbscrews and remove the filler panel from the Cascade Module slot (Figure 7 ). Figure 7. Removing the Filler Panel 3. Insert the 400-ST1 Cascade Module into the chassis slot taking care to slide the module into the guides provided on the chassis (Figure 8 ). BS0036A

• Bay BayStack 400-ST1, 14 Redundant Cascade Stacking Feature BayStack 400-ST1 Cascade Modules allow you to connect up to 8 units into a redundant cascade stack. If any single unit fails or if a cable is accidently disconnected, other units in the stack remain operational, without interruption. Figure 6 shows an example of how a stack configuration reacts to a failed or powered down unit in the stack configuration: a. As shown in Figure 6 unit 3 becomes nonoperational. This can be the result of a failed unit, or simply because the unit was powered down. b. Unit 2 and unit 4, directly upstream and downstream from unit 3, sense the loss of link signals from unit 3. c. Unit 2 and unit 4

• Bay BayStack 400-ST1, 10 Stack Configurations As shown in Figure 4 , the cascade connectors and cables on the 400-ST1 front-panel provide the ability to stack up to eight BayStack switches. With 400-4TX MDAs installed in each switch, the stack can accommodate a maximum of 224 switch ports. Because stack parameters are associated with the base unit (see “ Base Unit Description” on page 7), the physical stack order depends on the base unit’s position and whether the stack is configured stack up or stack down. Stack Up Configurations In Figure 4, data flows from the base unit (unit 1) to the next switch, which is assigned as unit 2, and continues until the last s

• Bay BayStack 400-ST1, 29 For tabletop configurations, temporarily move units 1 and 2 to allow space for units 5 and 6. Figure 12. Adding to Middle of Stack 4. Add the new units to the desired location. For tabletop configurations, replace units 1 and 2 (temporarily moved in Step 4). 1 = Base unit 2 = Last unit 3 = Cascade cable (PN 303978-A) 4 = Cascade max-return cable (PN 303979-A) BS0041A Unit 2 Unit 1 Unit 4 Unit 3 2 1 4 3 O u t I n

• 35 5. Repeat Steps 1 to 4 for unit 5. Figure 15. Removing Nonadjacent Units 6. Renumber the order of the units for the new stack configuration (if desired). You can renumber the unit numbers as described in “Setting Up the Stack Configuration” in the Using the BayStack 450 10/100/1000 Series Switch guide. 1 = Base unit 2 = Last unit BS0044A Unit 2 Unit 1 Un

• Bay BayStack 400-ST1, 13 Certain network management station (NMS) applications assume a stack down configuration for the graphical user interface (GUI) that represents the stack (see Figure 5 on page 12 ). For this reason, Bay Networks recommends that you always configure the top unit in the stack as the base unit. In any stack configuration, the following applies: • The entire stack powers up as a single logical unit within 30 seconds after the base unit initialization. • You can attach an RS-232 communications cable to the Console/Comm port of any switch in the stack. • You can downline upgrade the entire stack from any switch in the stack. • You can access and m

• Bay BayStack 400-ST1, 9 • Temporary Base Unit --- If an assigned base unit fails, the next unit in the stack order automatically becomes the new temporary base unit. This change is indicated by the Base LED on the temporary base unit’s LED display panel turning on (yellow). The automatic base unit change to the next unit in the stack order is a temporary safeguard which allows you time to replace the failed unit, or reassign the temporary base unit as the new base unit. Set the Unit Select switch on the temporary base unit to Base (up =Base) to reassign it as the new base unit. • Removing a unit from the stack--- if a unit is removed from the stack (therefore operating in stan

• Bay BayStack 400-ST1, 33 Removing/Replacing Adjacent Units To remove/replace adjacent units from an operating stack, complete the following steps (see Figure 14 ): 1. Remove the cascade cable from the Cascade A Out connector at unit 2. Figure 14. Removing Adjacent Units 1 = Base unit 2 = Last unit BS0043A Unit 2 Unit 1 Unit 4 Unit 3 Unit 6 Unit 5 2 1 Cascade A Out I n O u t Cascade A In

• Bay BayStack 400-ST1, 8 • Stack IP MAC address --- The stack IP MAC address is automatically assigned during the stack initialization: The base unit’s MAC address, with a software offset, is used for the stack IP MAC address. For example, if the base unit’s MAC address is: 00-00-82-99-44-00 and the Stack software offset is: 1F then the Stack IP MAC address becomes: 00-00-82-99-44-1F If another unit in the stack is assigned as the base unit, the MAC address of the new base unit (with offset) now applies to the stack configuration. The original stack IP address still applies to the new base unit. Note: You can renumber the units when you perform the initia

• Bay BayStack 400-ST1, 25 Figure 11. Verifying the Installation • The Base LED for the base unit only is on. If one (or more) Base LEDs are blinking, no unit (or more than one unit) is configured as the base unit. If the LEDs on any of the units in the stack are not as shown in Figure 11 , cycle the power to the stack and verify the LEDs. Refer to Using the BayStack 450 10/100/1000 Series Switch guide to set up the stack and for detailed information about stacking, including troubleshooting. 450-24T Switch 1211 2423 BayStack Cas BS0040A Cas Up Dwn Base Pwr Status RPSU Cas Up Dwn Base Pwr Status RPSU 1 = Base unit only 2 = All other units in stack 1 2

• 24 One or two AC power strips may be required to accommodate the quantity of switches in the stack. 3. Apply power to the AC power strip. Set the AC power strip On/Off switch to On (or connect the AC power strip to a grounded AC power outlet). 4. Proceed to “ Verifying the Installation” following this section. Verifying the Installation When installation is complete and power is a

• Bay BayStack 400-ST1, 27 Assigning a New Base Unit to the Stack To assign a new base unit to the stack, complete the following steps: 1. Set the Unit Select switch on the original base unit to the Off position. See Figure 9 on page 20 for details about the Unit Select switch. 2. Set the Unit Select switch on the new base unit to the Base position. 3. Renumber the Stack. See the Using the BayStack 450 10/100/1000 Series Switch guide for detailed information on how to renumber the stack configuration. Note: Bay Networks recommends that you always configure the top unit in the stack as th

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