Specifications

34 | Installing the S4820T

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Figure 4-8. S4820T Stacking Topology

Connect Two S4820T Systems

To provide backup connectivity and increased data transfer between the systems, Dell Force10

recommends inserting an additional cable between the two units, in a second stacking port, as shown in

Figure 4-9

You can use any of the RJ-45 or QSFP+ ports for stacking, provided it is configured as a stacking port.

CAUTION: To connect S4820T systems, use only Dell Force10 supported stacking cables.

To connect two S4820T systems in a ring (

Figure 4-9

), starting with the S4820T at the bottom of the

stack, follow these steps:

NOTE: The port numbers in the following procedure are examples only.

Step Task

1 Insert one end of the first cable into stack port 60 in chassis 1 (bottom).

2 Insert the other end of the same cable into stack port 52 on chassis 2 (top).

3 Insert a second cable into stack port 56 on chassis 2 (top).

4 Insert the other end of the second cable into stack port 56 on chassis 1 (bottom).

Ring Topology Cascade Topology

Chassis 1

Chassis 2

Chassis 3

52 60

48 56

.....

52 60

48 56

.....

52 60

48 56

.....

52 60

48 56

.....

52 60

48 56

.....

52 60

48 56

.....