Bay BayStack 400-ST1 Manuel d'instructions Page 1

Part No. 304433-B Rev 00August 2000 TMInstalling the BayStack 400-ST1 Cascade Module

8Base UnitThe base unit is a unique unit that can be selected by the Unit Select switch on the front panel of the 400-ST1 cascade module (see “Unit S

9•Initial installation -- During the initial installation of the stack, the software automatically determines the physical order of all units in the

10-- If there is only one Business Policy Switch unit in your mixed stack configuration, and it fails, the next upstream BayStack 450 Switch unit wil

11•Stack MAC address -- The stack MAC address is automatically assigned during the stack initialization. The base unit’s MAC address, with an offset,

12Stack ConfigurationsAs shown in Figure 5, the cascade connectors and cables on the 400-ST1 front panel provide the ability to stack up to eight swi

13Figure 5. Stack Up Configuration ExampleUnit 7Unit 81 = Last unit2 = Base unit3 = Cascade cable (PN 303978-A)4 = Cascade max-return cable (PN 30397

14Stack Down ConfigurationsIn Figure 6, data flows from the base unit (unit 1) to the next switch, which is assigned as unit 2, and continues until t

15Figure 6. Stack Down Configuration ExampleUnit 21 = Base unit2 = Last unit3 = Cascade cable (PN 303978-A)4 = Cascade max-return cable (PN 303979-A)

16Redundant Cascade Stacking FeatureBayStack 400-ST1 Cascade Modules allow you to connect up to 8 units into a redundant cascade stack. If any single

17Figure 7. Redundant Cascade Stacking FeatureUnit 21 = Base unit2 = Last unit3 = Cascade cable (PN 303978-A)4 = Cascade max-return cable (PN 303979-

© 2000 by Nortel Networks, Inc.All rights reserved. Printed in the USA. August 2000.TrademarksNortel Networks and BayStack are trademarks of Nortel N

18InstallationThis section describes how to connect up to eight switches into a redundant stack. The stack can consist of any combination of supporte

19Installing the 400-ST1 Cascade ModuleThe Cascade Module slot on supported switches can accommodate a single 400-ST1 Cascade Module.To install a 400

20•Business Policy Switch -- Use a flat-blade screwdriver to gently pry off the filler panel (Figure 9).Figure 9. Business Policy Switch Filler Panel

21Figure 10. Installing a 400-ST1 Cascade Module4. Press the module firmly into the chassis slot. Make sure that the module is fully seated into the

22Installing and Connecting Multiple SwitchesThe procedure to install and connect multiple switches is similar for standard 19-inch utility rack, she

235. Set the Unit Select switch for the base unit to the Base (up = Base) position (Figure 11).6. Set the Unit Select switch for all other units in t

247. Connect the units using the supplied cascade cables (Figure 12).a. Connect one end of a cascade cable to the Cascade A Out connector on the Base

25b. 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 u

26Connecting PowerWhen the stack is initially powered up, the software automatically assigns unit numbers to the units (the individual switches in th

272. Plug the other ends of the AC power cords into a grounded AC power strip.One or two AC power strips may be required to accommodate the quantity

1IntroductionThis guide shows how to install BayStack™ 400-ST1 Cascade Modules into the following supported switches1:• Nortel Networks Business Poli

28Figure 13. 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

29Modifying an Existing Stack ConfigurationThis section provides examples of how to modify an existing stack configuration. The examples assume the s

30Assigning a New Base Unit to the StackTo assign a new base unit to the stack, complete the following steps:1. Set the Unit Select switch on the ori

31Adding Units to the StackThis 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

32For tabletop configurations, temporarily move units 1 and 2 to allow space for units 5 and 6.Figure 14. Adding to Middle of Stack4. Add the new uni

335. Reconnect the cascade cable from unit 2 to the Cascade A In connector of (new) unit 5.6. Connect a cascade cable from the Cascade A Out connecto

34Figure 15. Adding to End of Stack2. Disconnect the cascade return cable (item 4) from the Cascade A Out connector at unit 4.Leave the other end of

354. 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 C

36Removing/Replacing Adjacent UnitsTo remove/replace adjacent units from an operating stack, complete the following steps (Figure 16):1. Remove the c

372. Remove the cascade cable from the Cascade A In connector at unit 5.3. Remove the units (units 3 and 4) and install replacement units as required

2As shown in Figure 1 on page 1, in a mixed stack configuration, the BayStack 450 and 410-24T switches must use compatible but device-specific softwa

385. Repeat steps 1 to 4 for unit 5.Figure 17. Removing Nonadjacent Units6. Renumber the order of the units for the new stack configuration (if desir

39Upgrading the Switch FirmwareYour switch firmware provides a code load facility that allows you to upgrade the firmware image over any switch port,

40Accessing the Latest DocumentationIf you are upgrading your switch, be sure to obtain the latest version of the switch’s User Guide. You can obtain

3You can obtain the latest updates to your product documentation, including release notes, by visiting the Nortel Networks Web site at the following

4Contents of ShipmentYour BayStack 400-ST1 shipment includes the following items (Figure 2):Figure 2. Contents of ShipmentItem DescriptionPart Number

5If any items are missing or damaged, contact the sales agent or the customer service representative from whom you purchased the BayStack 400-ST1 cas

6Cascade A Out ConnectorProvides an attachment point for connecting this unit to another unit via the cascade cable. A cascade return cable from anot

7Figure 4. Connecting Cascade CablesCascade A OutUnit 1Cascade A OutCascade A InUnit 21 = Base unit2 = 303978-A cascade cable3 = 303978-A cascade cab