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CISCO Stacking

Posted on 2015-02-23
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Last Modified: 2015-03-04
Hi Experts,

I have just a simple question for you.
I have an access switch C2960X on one floor.
This switch is now full.
What is the best way to extend to a second switch ?
Can I do it with an extra fiber connection to my core switch ?
Or can I just stack a second switch to it ?
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Question by:Eprs_Admin
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Expert Comment

by:Predrag Jovic
ID: 40625440
There is no universal answer to that question, answer depends of your current available bandwidth and predictions of future needs.
If you have available bandwidth on your  current uplink to core switch (this includes a future prediction of available bandwidth for some time period) best way is to go with stacking.
But if you don't have available bandwidth on your current uplink (or you expect that there will not be enough bandwidth)  best way is an extra fiber connection to core switch.
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Expert Comment

by:Don Johnston
ID: 40625510
Can I do it with an extra fiber connection to my core switch ?
Or can I just stack a second switch to it ?
You can do it either way.  

If the second switch is a 2960 and can be located above or below the existing switch, then stacking can be done.

If the second switch is not adjacent to the existing switch, then you will have to connect it with an Ethernet cable (either 1g or 10g if you need the bandwidth).
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Assisted Solution

by:Predrag Jovic
Predrag Jovic earned 250 total points
ID: 40625541
Or, he can even go both ways and have some redundancy.
:)
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Author Comment

by:Eprs_Admin
ID: 40625551
Thanks a lot.
So with stacking I can use each port individually.
This is not a redundant switch with same config.
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Expert Comment

by:Don Johnston
ID: 40625560
Yes.  Stacking simply makes multiple switches behave as a single switch.
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Author Comment

by:Eprs_Admin
ID: 40625574
What about the config, when I stack the second switch ?
My vendor told me, this module makes it complete automatically.
Right ?
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Expert Comment

by:Don Johnston
ID: 40625615
What about the config, when I stack the second switch ?
When you stack the second switch, you will effectively have one switch with more ports.  The port designations will have an additional number. i.e.: g1/0/1 (switch 1, port1), g1/0/5 (switch 1, port 5), g2/0/8 (switch 2, port 8) and so on.

My vendor told me, this module makes it complete automatically.
I'm not sure what that is supposed to mean.
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Author Comment

by:Eprs_Admin
ID: 40625672
When I stack the second switch, do I have to change something in the config of the first switch ?
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Accepted Solution

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Don Johnston earned 250 total points
ID: 40625698
No. Just plug it in with the stack cables.

Managing Switch Stacks
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