Solved

Fiber optic - CAt5 Switches

Posted on 2015-02-08
6
131 Views
Last Modified: 2015-02-16
Hello Experts,

I am having an issue with data congestion (I suspect) on one of my networks...

I am using a Fiber Optic to CAt 5 Switch in one segment of the network as a CAt 5 switch only. In other words this switch has no fiber Optic leg connected to it but is a central switch with several CAT5 legs.

CAn you use a Fiber/Cat5 switch like this?? Using it just to connect several cliens and the Internet via CAt 5 or Cat 6 (NO Fiber optic)?

Does anyone know if this could be an issue?

Thanks!
0
Comment
Question by:Saxitalis
6 Comments
 
LVL 12

Expert Comment

by:Bryant Schaper
ID: 40596877
So to understand. You have a cite switch with a couple connections that are to fiber media converters that then connect far end to a switch with fiber interfaces?

If so that is fine. As long as the media converters are right for the type of fiber you shouldn't have a problem. Even Cisco switches normally use a transceiver module which is similar.
0
 
LVL 2

Expert Comment

by:UnHeardOf
ID: 40596904
check the speed of the connections, make sure your not running half. You could also look to see if there are any errors which could indicate bad port/cable etc.
0
 

Author Comment

by:Saxitalis
ID: 40596924
Yes I do have what you say (see SW 2 below) and it works fine but the question is:

There is a second leg upstream using another fiber/CAt5 switch (SW 1 below) like you describe) but there has only CAT 5 connections (NO FIBER CONNECTION). I wonder if this may cause issues. Using a fiber/CAt5 converter switch as a CAT 5 switch only (No Fiber connections).

FLOW:

INTERNET ==>  SW 1-FO/CAT5 converter switch (ONLY CAT5 leads) ==>  SW 2-FO/CAT5 converter switch (Converts 2 FO inputs to CAt 5) ==> SW 3  10/100 Cat5 switch only.

SW 1 is the question.

Does this make sense? Could SW 1 be an issue?

Thanks!
0
Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

 
LVL 12

Accepted Solution

by:
Bryant Schaper earned 250 total points
ID: 40598570
I dont think so, fiber converters should be fine.  Check duplex and speed as suggested.  Do you know the switch models and the converter models, ie are we getting and supporting either 100mbps or gig.  Maybe we have a hardware limit at 10mbps.
0
 
LVL 57

Assisted Solution

by:giltjr
giltjr earned 250 total points
ID: 40599180
Everything should be fine.  The switches with copper only interfaces connections don't know anything about the fiber part of the connections.  They only see copper, the same as if you had a complete end-to-end copper connection.

You need to make sure your Fiber to Copper converter supports the correct Fiber interface (LC or SC), and standard (LX, SX), and mode (MM, SM)  on the fiber side and on the copper side that it support the same speed (10/100/1000 Mbps).

You need to also check to see if the convert support auto speed and duplex negotiation or if it must be set to a fixed speed.  If it must be fixed, then you need to configure your switch to the same fixed speed and duplex.
0
 

Author Closing Comment

by:Saxitalis
ID: 40612288
I found the problem elsewhere but this is good to know - Thanks
0

Featured Post

Network it in WD Red

There's an industry-leading WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 8TB, WD Red offers a wide array of solutions for customers looking to build the biggest, best-performing NAS storage solution.  

Question has a verified solution.

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

How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
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.

920 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now