08-31-2011 02:26 AM - edited 03-07-2019 01:59 AM
Hi Guys
I am trying to build a C3750X power stack however just come to know that only 4 switches can be power stacked in ring topology.
I have 6 switches in stack is it possible to have two power stacks within the one stack of 6 switches ?
Solved! Go to Solution.
08-31-2011 02:48 AM
Hi Oriel, yes, you can either use the expandable power system to make a single power stack of 6 or have 2 power stacks of 3 within a single data stack.
From
Q. How many Cisco StackPower stacks can be built within one data stack?
A. ...... Another option is to build 3 Cisco Stackpower stacks of three each.
HTH
08-31-2011 04:14 AM
Hi Oriel, your stack ports are currently shut, you will need to enable them to bring the powerstack up.
Issue the following command from SW1# prompt "stack-power switch
08-31-2011 04:21 AM
Hi Oriel, issue the command from the priv exec, not config mode.
SW1#stack-power switch 1 port 1 enable
not SW1(config)#
08-31-2011 06:09 AM
Hi Oriel, glad to hear it's now working for you.
I think that you will have to do the math to work out if your power is under-budget (add the switch power budgets and substract from available PSUs), in practice you would see a console message warning that you were below budget.
Here is a useful link for understanding and calculating power budgets.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps10745/white_paper_c11-663717.html
Please rate helpful posts and mark them as answered to help others find a solution to similar problems.
Thanks and good luck!
08-31-2011 02:48 AM
Hi Oriel, yes, you can either use the expandable power system to make a single power stack of 6 or have 2 power stacks of 3 within a single data stack.
From
Q. How many Cisco StackPower stacks can be built within one data stack?
A. ...... Another option is to build 3 Cisco Stackpower stacks of three each.
HTH
08-31-2011 03:59 AM
okay
i cant see the neighbors with this configuration
stack-power stack power1
stack-power stack mypower
stack-power stack mypower1
!
stack-power switch 1
stack mypower
stack-power switch 2
stack mypower
stack-power switch 3
stack mypower
stack-power switch 4
stack mypower1
stack-power switch 5
stack mypower1
stack-power switch 6
stack mypower1
SW1#sh stack-power
Power stack name: mypower-1
Stack mode: Power sharing strict
Stack topology: Standalone
Switch 1:
Power budget: 1663
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Shut
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: 0000.0000.0000
Power stack name: mypower1
Stack mode: Power sharing
Stack topology: Standalone
Switch 6:
Power budget: 1663
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Shut
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: 0000.0000.0000
Power stack name: mypower1-4
Stack mode: Power sharing strict
Stack topology: Standalone
Switch 4:
Power budget: 1663
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Shut
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: 0000.0000.0000
Power stack name: mypower1-5
Stack mode: Power sharing strict
Stack topology: Standalone
Switch 5:
Power budget: 1663
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Shut
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: 0000.0000.0000
Power stack name: mypower
Stack mode: Power sharing
Stack topology: Standalone
Switch 2:
Power budget: 1663
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Shut
Port 2 status: Shut
Neighbor on port 1: 0000.0000.0000
Neighbor on port 2: 0000.0000.0000
08-31-2011 04:13 AM
why its showing
Port 1 status: Shut
Port 2 status: Shut
How i can no shut those ports ?
08-31-2011 04:14 AM
Hi Oriel, your stack ports are currently shut, you will need to enable them to bring the powerstack up.
Issue the following command from SW1# prompt "stack-power switch
08-31-2011 04:18 AM
Cisco IOS Software, C3750E Software (C3750E-IPBASEK9-M), Version 15.0(1)SE, RELE
ASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Wed 20-Jul-11 09:09 by prod_rel_team
-----------------
SW1(config)#stack-power switch 4 ?
SW1(config)#stack-power switch 4
---------------------------
SW1(config-switch-stackpower)#?
Switch stack power configuration mode:
default Set a command to its defaults
exit Exit from switch stack power configuration
no Negate a command or set its defaults
power-priority Switch's port priority
stack Switch's power stack
standalone Configure switch to not participate in power stack
i cant see this command...
08-31-2011 04:21 AM
Hi Oriel, issue the command from the priv exec, not config mode.
SW1#stack-power switch 1 port 1 enable
not SW1(config)#
08-31-2011 04:30 AM
Yes it worked
thanks
let me see the result and will update you shortly
08-31-2011 05:19 AM
Thats great you are an absolute star.
Just one more question please, how i can find out if my system is running in ngative budget. Right now i have got power-stack of 3 switches and only 1 power supply is connected...
Power stack name: mypower1-5
Stack mode: Power sharing
Stack topology: Ring
Switch 6:
Power budget: 343
Low port priority value: 21
High port priority value: 12
Switch priority value: 3
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1:
Neighbor on port 2:
Switch 5:
Power budget: 373
Low port priority value: 20
High port priority value: 11
Switch priority value: 2
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1:
Neighbor on port 2:
Switch 4:
Power budget: 343
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1:
Neighbor on port 2:
-----------------
SW1#show env power all
SW PID Serial# Status Sys Pwr PoE Pwr Watts
--- ------------------ ---------- --------------- ------- ------- -----
1A C3KX-PWR-1100WAC LIT12120W14 OK Good Good 1100/0
1B C3KX-PWR-1100WAC LIT13509648 OK Good Good 1100/0
2A C3KX-PWR-1100WAC LIT16511011 OK Good Good 1100/0
2B C3KX-PWR-1100WAC LIT145015KA OK Good Good 1100/0
4A C3KX-PWR-1100WAC LIT12280KGL OK Good Good 1100/0
4B C3KX-PWR-1100WAC LIT14232163R No Input Power Bad N/A 1100/0
5A C3KX-PWR-1100WAC LIT144232KUF No Input Power Bad N/A 1100/0
5B C3KX-PWR-1100WAC LIT14511142P No Input Power Bad N/A 1100/0
6A C3KX-PWR-1100WAC LIT14523125Q No Input Power Bad N/A 1100/0
6B C3KX-PWR-1100WAC LIT14481231T No Input Power Bad N/A 1100/0
08-31-2011 06:09 AM
Hi Oriel, glad to hear it's now working for you.
I think that you will have to do the math to work out if your power is under-budget (add the switch power budgets and substract from available PSUs), in practice you would see a console message warning that you were below budget.
Here is a useful link for understanding and calculating power budgets.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps10745/white_paper_c11-663717.html
Please rate helpful posts and mark them as answered to help others find a solution to similar problems.
Thanks and good luck!
08-31-2011 07:02 AM
Thanks a lottttttttt for all your helo
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