Nortel Networks 2500 Series Rear ports and stacking, Unit Select switch, Rear panel components

Stack configuration 47

Figure 13

show rear-ports mode command output

Configuring the operational mode of rear ports using the Device Manager

Use the Device Manager to configure the operational mode of the rear ports into Standalone or Stacking Mode in the Ethernet Routing Switch 2500 Series. For more information on configuring the operational mode of rear ports, see "Rear Ports Mode tab" (page 252)

Rear ports and stacking

The rear panel view of a Nortel Ethernet Routing Switch 2500 series switch consists of two RJ-45 1000BaseT ports and a Unit Select switch. In Stacking Mode, the two rear ports become the Cascade Down and Cascade Up ports for connecting switch units in a stack configuration. The rear panel components are illustrated in the following diagram:

Figure 14

Rear panel components

Unit Select switch

The Unit Select switch is used to designate a switch in the stack as the base unit. Sliding the switch to the right designates that switch as the base unit. Only one switch in a stack has the Unit Select switch in the base unit position. All other switches in the stack must have the Unit Select switch in the left position.

The base unit designation of a switch is also displayed on the front panel LED display. For more information, see Table 2 "Ethernet Routing Switch 2500 Series LED descriptions" (page 28)

Nortel Ethernet Routing Switch 2500 Series

Overview — System Configuration

NN47215-500 (323162-B) 02.02 Standard

4.1 19 November 2007

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