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Diagnosing packet loss
Expert: Loki Jorgenson, Ph. D. | 20 May 2003
EXPERT ANSWER - I am experiencing 84% packet loss based on statistics provided by pathping on my Windows 2000 network. I am using static IP addressing with two 3Com Netbuilder 222 routers. The network is 10.0.0.0, my near end router Ethernet ...
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Calculating bandwidth
Expert: Loki Jorgenson | 08 May 2003
EXPERT ANSWER - How can I calculate bandwidth? Suppose I have 128b/s link - can I download 128 bytes per second? When 10 people are using that 128 link - how much is each person is using?
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Can you suggest a tool to monitor application bandwidth utilization?
Expert: Loki Jorgenson | 08 May 2003
EXPERT ANSWER - I want to monitor the per application bandwidth utilization in a WAN environment (both applications being TCP/IP based and running on different hosts at the Data Center). Can you suggest an appropriate tool for a mid-size ...
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Best practices for end-to-end testing
Expert: Loki Jorgenson | 08 May 2003
EXPERT ANSWER - We are trying to set up testing guidelines for equipment (card swipe terminals) owned and/or leased to our customers that will connect to us via dial-up (T1), host-to-host (Frame) and the Internet. Are there any "best" ...
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Institute packet shaping
Submitted By: By Barrie Sosinsky | 07 May 2003
TIP - What it can do for you, and a couple tools to do it.
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Are UDP packets distinguishable?
Expert: Loki Jorgenson | 25 Apr 2003
EXPERT ANSWER - What if two computers send a UDP packet to one computer on the same port? How does the computer distinguish between the two packets?
Example:
( 128.9.0.32, 1184 )->( 128.10.2.3, 53 ) and
( ...
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Measuring utilization
Expert: Loki Jorgenson | 25 Apr 2003
EXPERT ANSWER - I have a cascaded switch network of 75 workstations where all the traffic is going to the Internet with a static NAT'd IP. I want to know how much Internet bandwidth is consumed by 50 systems.
What can I use (using MRTG) ...
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Maximum segment length
Expert: Loki Jorgenson | 25 Apr 2003
EXPERT ANSWER - Why does 10base10 have a maximum segment length of 1000 to 2000 meters and 100basef has 400 meters?
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