Solved

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

Posted on 2012-03-16
4
446 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
  • 2
  • 2
4 Comments
 
LVL 57

Accepted Solution

by:
giltjr earned 500 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 500 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

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

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

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
For many of us, the  holiday season kindles the natural urge to give back to our friends, family members and communities. While it's easy for friends to notice the impact of such deeds, understanding the contributions of businesses and enterprises i…
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…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

789 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