?
Solved

Way to connect up redundant power cords of a pair of stacked Cisco C3750X switch

Posted on 2012-03-16
4
Medium Priority
?
457 Views
Last Modified: 2012-03-19
Refer to attached photo :

a) the pair of cables on the left is the 'stackwise' cables :
    did I connect them up correctly?

b) the pair of cables on the right : what are these?  Are
    they for redundant power?   Did I connect them up
    correctly?
Ciscable2.jpg
0
Comment
Question by:sunhux
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 57

Accepted Solution

by:
giltjr earned 2000 total points
ID: 37730570
A) Yes.

B) They are for power, but it can either be redundant or sharing mode.

Go to:

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/data_sheet_c78-584733.html

and search on "Cisco StackPower Technology"
0
 

Author Comment

by:sunhux
ID: 37734499
For (B), I don't quite understand why these cables are needed.
If these 2 cables are unplugged/taken out, the switches will still
have power, right?

In fact there are 2 external (13A) power cords connected to
each of the switch, so I was wondering why the cables for (B)
is still needed?
0
 

Author Comment

by:sunhux
ID: 37734501
Is item (B)  PoE (Power over Ethernet) & what does PoE do?
0
 
LVL 57

Assisted Solution

by:giltjr
giltjr earned 2000 total points
ID: 37735524
They can be used in case the power supplies in one of the switches dies.

With these cables in place you don't need to have a 2nd power supply for each switch in the stack.


B is used for "power", does not matter if it is POE or just plain power to power the switch.

POE is away to supply power to devices over Ethernet cables.  This is normally used for VOIP phones and cameras.
0

Featured Post

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
This article is a collection of issues that people face from time to time and possible solutions to those issues. I hope you enjoy reading it.
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Suggested Courses
Course of the Month13 days, 21 hours left to enroll

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question