Solved

Network issues. Internet dropping

Posted on 2013-06-04
3
338 Views
Last Modified: 2013-12-07
Hey everyone,
we have an issue where the internet keeps dropping but the ISP says their line is ok. Can anyone recommend any kind of software "sniffer" that can detect issues within a network. Such as packet loss or unusual or a lot of traffic coming from a specific IP address
0
Comment
Question by:ithelp911
3 Comments
 
LVL 8

Assisted Solution

by:d0ughb0y
d0ughb0y earned 250 total points
ID: 39219246
When you say that "the Internet keeps dropping", what, exactly, do you mean?
Are you having trouble with one computer? Multiple machines? All machines?
How are you determining that the connection has dropped?
Can you ping, say, www.google.com? How about 8.8.8.8? (Which is a Google DNS server.)
What does your network look like? Is it, 3 computers connected to the cable-modem? Is there another switch involved? Is there another router involved?
0
 

Author Comment

by:ithelp911
ID: 39219365
Ok, it is the entire office. Around 70 PCs and 3 servers.
Here is a copy of the email i sent the ISP best describing the issue:

We have a site to site vpn setup from 74th to 77th streets using our cisco ASA firewalls. Users from 74th street use an internal IP address to connect to our terminal server at 77th street. What happens is the users at 74th street loose connection to the terminal server for a second and then reconnect. The loss of connection is random. It can be as many as 10 times in an hour or as little as 2 times a day. No rhyme or reason.

We also use a program called medical manager. The server is located in 77th street. Users in 74th street also get disconnected at random times.

Finally, the IT department uses a remote application called Bomgar to do remote support. This is NOT internal or part of the network. Our offices are located in Brooklyn NY and use Verizon fios. We have jump clients installed on each PC at NY ORTH in all locations. Numerous occasions while I was in the middle of a support session I lost connection to a PC or Server at the 74th location for a second. Sometimes the connection is reestablished other times I need to just reinitialize the session (Which is another reason we believe it is the line since this has nothing to do with the site to site VPN).

That is what i sent the ISP. Like i said, the reason i don't believe it is anything internal is that we use bomgar to do remote support from the outside and on numerous occasions my connection was lost for a few seconds then restored. We have checked and rechecked the firewalls and found nothing. I was just wondering if there was any "software" tools that can be used to take a better look at the network
0
 
LVL 25

Accepted Solution

by:
madunix earned 250 total points
ID: 39234828
Do a ping -t <IP> , see if you get packet lost, I use Cacti http://cacti.net/, it  is a brilliant software to narrow down the problem.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Monitoring Software: Which is best? 9 92
Monitor Internet Usage by Device 2 60
discontiguous network and EIGRP 12 68
Question about consuming GB from Comcast 5 53
In this tutorial I will show you with short command examples how to obtain a packet footprint of all traffic flowing thru your Juniper device running ScreenOS. I do not know the exact firmware requirement, but I think the fprofile command is availab…
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

785 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