Solved

High Receive Utilization on my Cisco 3560 V2

Posted on 2016-10-21
10
60 Views
Last Modified: 2016-11-04
I use a Cisco 3560 V2 switch that is managed.  This switch connects our entire company network together (16 sites).  I monitored all our of network devices using Solar Winds.  I noticed that I got an alert that my switch had a high received utilization of 98%.  This started this morning at 6:21 am.  The average is around 53%.  I have logged into my switch, but I can't seem to figure out what is putting out this traffic.  This port is the port that connects my location to the network - approximately 50 computers and voip phones.  How do I find out where this issue is coming from?  SolarWinds shows me the port on the switch, but since so many devices are connect to that port via 3 other switches, I have no idea how to find this out.  Any suggestions?
0
Comment
Question by:Salonge
  • 4
  • 4
10 Comments
 
LVL 26

Accepted Solution

by:
skullnobrains earned 500 total points
ID: 41854121
use a traffic sniffer. btw i though solarthing had a builtin feature to show you which ip and/or port is cluttering the most bandwidth... check into that first
0
 

Author Comment

by:Salonge
ID: 41854170
Called Solarwinds and they told me how to do it.
0
 

Author Comment

by:Salonge
ID: 41862776
I figured out it out.
0
 
LVL 26

Expert Comment

by:skullnobrains
ID: 41863522
feel free to post your findings. i'll be glad to help if i can ( either today or at the end of next week : i'll be atking a few days off )
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.

 

Author Comment

by:Salonge
ID: 41867380
The problem was with a process running on my cloud backup that had hung up and causing the high utilization on my switch.  I killed the job and everything worked fine.
0
 
LVL 26

Expert Comment

by:skullnobrains
ID: 41871595
i honestly do not care about points but this is your question

How do I find out where this issue is coming from?  SolarWinds shows me the port on the switch, but since so many devices are connect to that port via 3 other switches, I have no idea how to find this out.  Any suggestions?

and my first comment is your answer
1
 

Author Comment

by:Salonge
ID: 41872259
I want to give points to skullnobrains.  How do I do that?
0
 
LVL 26

Expert Comment

by:skullnobrains
ID: 41873951
like i said, don't care much about points but i appreciate the gesture. thanks for sharing your findings as well.
0

Featured Post

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.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
CMDB relationships for hardware assets 2 29
Creating and Connection two new domains 5 79
BGP Network restrictions 6 20
DHCP Server 14 63
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
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
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…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

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

11 Experts available now in Live!

Get 1:1 Help Now