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Network Bandwidth?

By jlbecker67 ·
Our network is connected to a 128k frame relay circuit for internet access and we are having problems with connection speed. The provider says either we are maxed out on bandwidth or we have a network problem. I want to be sure my end is ok before upgrading the circuit. How can I troubleshoot the speed and bandwidth of my network? I have downloaded some demo programs for analyzing networks, but I really don't know how to interpret the results. Any help would be appreciated. Thanks

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Network Bandwidth?

by estebandelatorre In reply to Network Bandwidth?

1.- Set up the network analizer in order to "filter packets".
Capture ALL TCP/IP packets (good & bad)
FROM ANY host Which
Destination address (MAC or IP)= your lan IP or mac address of the device(router or firewall) conected to internet
2.- Identify which packets are necesary traffic
3.- You can find strange things like...
a.- Every PC has internet as the default gateway...Not good!
b.- Some people using high consuming apps, like radio or video on demand.
c.- Explorersthat are setup to autoupdate page contents every five minutes...
d.- More ftp or http downloads of mp3's than what you think!
e.- A noisy nic card, sending packets to internet...

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Network Bandwidth?

by jlbecker67 In reply to Network Bandwidth?

The question was auto-closed by TechRepublic

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Network Bandwidth?

by -Q-240248 In reply to Network Bandwidth?

Your provider needs to supply you with a "useage report' to determine if you are indeed over-subscribing. You could also see what traffic is going out and where to. As far as any LAN problems, check the logs on the LAN router interface..

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Network Bandwidth?

by jlbecker67 In reply to Network Bandwidth?

The question was auto-closed by TechRepublic

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Network Bandwidth?

by ippacket In reply to Network Bandwidth?

Check the statistics on both the Ethernet and Serial interfaces on your router. If the Serial interface buffer is discarding packets, this indicated a bottleneck on the WAN. If the Ethernet interface is discarding packet and the serial int is not this would indicate heavy traffic on the LAN. Compare this to the packet per sec. info from the manufacture documentation. That will tell you if the router would need to be upgraded. However, router replacement is not likely.
If you feel, the congestion is on the local network, use the analyzer. Capture all traffic at any interval, say three or four times a day. Almost every software package will give you a graphic presentation of bandwidth usage. Look for the average and peak usage, 50/80 is good. If you network is segmented, I recommend putting the software on a laptop and hit each one. If the network is not and you are experiencing, higher averages and peaks look into segmenting. In addition, look for heavy broadcast traffic, this will kill you.
Contact you line carrier for a utilization report and look at your agreement. Validate the Access Rate (AR), Burst Rate and Committed Information Rate (CIR).
How many users share this link? Does their job require much Internet use?
Look at the necessity of the Internet and how it relates to the operation of the organization. You may only need to write and enforce an Internet usage policy.
Let me know.

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Network Bandwidth?

by jlbecker67 In reply to Network Bandwidth?

The question was auto-closed by TechRepublic

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Network Bandwidth?

by jlbecker67 In reply to Network Bandwidth?

This question was auto closed due to inactivity

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