[2 days left] What’s wrong with your cloud strategy? Learn why multicloud solutions matter with Nimble Storage.Register Now

x
?
Solved

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

Posted on 2012-03-16
4
Medium Priority
?
464 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

Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

Question has a verified solution.

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

When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
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

649 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