Adding A Stack Member With Minimal Interruption - Dell PowerConnect PC7024 Stacking Instructions

Stacking Dell PowerConnect 7000 Series Switches

Adding a Stack Member with Minimal Interruption

When adding a new member to a stack, make sure that only the stack cables and no network cables are
connected before powering up the new unit. Make sure the end-user links are not connected to any
ports on the unit being added and the new member is powered off. This is important because if STP is
enabled and any links are UP, then STP re-convergence will take place as soon as the link is detected.
After the stack cables on the new member are connected to the stack, you can connect the power. Do
not connect a new member to the stack while the new member is powered up. Also, do not connect
two functional, powered-up stacks together. If you connect two functional, powered-up stacks
together or connect a powered-up new member to the stack, then master re-election takes place and
causes one of the stacks to reboot to resolve this issue. See "Merging Two Operational Stacks" for more
details.
If there are any unassigned units already configured on the stack, remove them prior to adding a new
unit to stack. This is important because when there is any preconfigured unit and the Master holds
some configuration for that unit, as soon as the new unit is detected, the configuration is applied,
which might trigger the re-convergence or startup of many other protocols. However, it is possible to
intentionally pre-configure a unit. You can view the preconfigured/unassigned units by using the show
switch CLI command.
The following example shows how to view the units in the stack and remove an unassigned unit:
console#show switch
Management Standby
SW Status Status
--- ---------- --------- ------------- ------------- ------------- ----------
1 Mgmt Sw
2 Unassigned
console#configure
console(config)#stack
console(config-stack)#no member 2
console(config-stack)#exit
console(config)#exit
Preconfig Plugged-in
Model ID Model ID
PCT7048P PCT7028P
PCT7028P
Switch Code
Status Version
OK 4.0.0.6
Not Present 0.0.0.0
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