Cisco 3750 Stacks and recovers single units.

cisco3750 Stacks The switch, leaving the stacking group to restore the factory .

1. Switch (config) # switch original stacking serial number (1-9) Priority 1
   

2. Switch (config) # switch original stacking serial number (1-9) Renumber 1

3. Switch#copy Run Start
   

4. switch# Erase Startup-config

5. Switch#delete Vlan.dat

6. Switch#reload

How to remove one of the stacks from a stack group.

cisco3750a (config) #do show switch
Switch/stack Mac address:001e.14c0.2480
H/W Current
switch# Role Mac Address Priority Version State
----------------------------------------------------------
* * Master 001e.14c0.2480 0 Ready
2 Member 0000.0000.0000 0 0 removed

cisco3750a (config) #no switch 2 provision
cisco3750a (config) #do show switch
Switch/stack Mac address:001e.14c0.2480
H/W Current
switch# Role Mac Address Priority Version State
----------------------------------------------------------
* * Master 001e.14c0.2480 0 Ready

No reboot is required, and the interface of the gig2/0/x configured in show run will disappear all the same.

How to add a new switch to the original stack:

Connect the stack line directly, then open the newly joined switch, and the original configuration of the newly added switch will be cleared,

Become a member switch, then you can set the priority for it, and the stacking number is automatically sorted sequentially. Then reload slot stack number

Stacking instructions:

1. Number of stacked switches up to 9 units

2. The stack switch model can be different, iOS recommendations are consistent (all 3750, but not 3750 and 3560 and 3550).

3. Interface name change.

The original switch interface is gig1/0/x or fas1/0/x, after stacking, into the gig stack group number/0/x.

Example: Switch 2 in a stacked group then the interface above it will all become gig2/0/x or fas2/0/x.

Configuration of the stack:

Connection mode: Slot 1 Port 2-slot 2 port 1

Slot 1 Port 1-slot 2 Port 2

Connected. More stations, connecting in turn.

Method 1:

All the switches that will be stacked are connected to the stacking lines, which are turned on by themselves to master and member.

The Master lantern on the last master switch is lit. Which is the master switch.

Switch priority comparison rules:

1. The priority of the machine configuration. Configuration method Switch (config) #switch 1 priority (1-15)

2. MAC address of the machine itself, the address of the small preference for master

3. Machine start-up time, turn on the long running time of the preferred master

4. iOS version of the machine, version high preferred master
   

At the same time, the results are as follows:

Switch#show switch
Switch/stack Mac address:001b.8f1d.8e00
H/W Current
switch# Role Mac Address Priority Version State
----------------------------------------------------------
* Master 001b.8f1d.8e00 1 0 Ready
2 Member 001e.14c0.2480 1 0 Ready

At the same time, the MAC address is small to become master.

Method 2:

First configure the stack number of the switch, priority, and then connect the stack line, first open master, until the start OK, then turn on member switch.

Configure stack number switch (config) # switch 1 Renumber 2

Configure priority switch (config) # switch 2 priorities (1-15) Note: Configure priority first, configure the stack number before you are prompted to find the switch 2

Save Configuration Switch#copy Run start

Restart switch 2 switch#reload slot 2

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Cisco 3750 Stacks and recovers single units.