Chapter 2: Virtual Chassis Stacking
Stacking Port Topologies
The switches of a stack are connected with the S1 and S2 ports and the stacking transceivers shown in Figure 12 on page 38.
There are two wiring configurations. The first topology is called the linear topology. In this topology the switches are connected with a single pathway. A stacking transceiver in one switch is connected to a stacking transceiver in the next switch, which is connected to the next switch, and so on. The connections must crossover to different stacking slots on the switches. The stacking transceiver in the S1 slot in one switch must connect to the stacking transceiver in the S2 slot in the next switch.
Figure 13 is an example of a stack of two switches in the linear topology. The transceiver in the S1 slot on the top switch is connected to the transceiver in the S2 slot on the bottom switch.
25 SFP+ S1/27
CONSOLE
26 S2/28
25 SFP+ S1/27
CONSOLE
26 S2/28
2694
Figure 13. Stack of Two Switches in the Linear Topology
Caution
The stack will not function if the connections to the S1 and S2 slots do not crossover on the switches. The switches will not form a stack and instead operate as stand-alone devices.
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