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Stacking Dell PowerConnect 7000 Series Switches

console#show switch

Management

Switch Status

------ ----------- ------------

Stack Mbr

Unassigned

Mgmt Switch

Stack Mbr

When the failed unit resumes normal operation, the previous configuration that exists for that unit is

reapplied by the master unit.

Scenario 2

Consider the same example with a four-unit stack connected in daisy-chain fashion.

Stack Split

Figure 4.

If the link between Switch 2 and Switch 3 is removed, the stack is split into two different stacks with

Switches 1 and 2 in one stack and Switches 3 and 4 in another.

The master unit for each stack is determined by the following criteria:

•

Switch 3 was configured as master prior to the split, so it will continue to be the

master unit for Stack 2 (units 3 and 4).

•

If Switch 2 is configured as the standby, it becomes the master for Stack 1 (units 1 and

2).

•

If none of the units in Stack 1 are configured as master or standby, then Stack 1 will

have no master after the split. The election process will start on these two units, and

either Switch 1 or Switch 2 will come up as a master based on which switch has the

highest base MAC address.

In this specific example, there will not be any change in the configuration in Stack 2. Stack 1 will come

up with the previously saved configuration on the new master elected.

Note that stack splits are less likely when the switches are cabled in a ring. For example, if Switch 4

was connected to Switch 1 and the link between Switch 2 and Switch 3 was removed, all switches

would remain members of the single stack with Switch 3 continuing as the master.

Standby

Preconfig Plugged-in

Status

Model ID

--------- ----------- ------------ --------

Standby

PCT7048

Switch 1

Switch 2

Standby

Switch 3

Switch 4

Switch

Model ID

Status

PCT7048

Not Present

PCT7048

Switch 1

Switch 2

Switch 3

Switch 4

Code

Version

4.0.0.6

0.0.0.0

4.0.0.6

Stack 1

Master

Stack 2

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