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Measuring ARP transaction times
is a great example of sub-component responsiveness measurement.
Address Resolution Protocol (ARP) is a critical part of most Internet
Services. ARP is a local area network service that converts IP
addresses into Media Addresses. ARP is important in both ethernet
and ATM LANE networks. For LAN based transactions, the ARP Transaction
time is in the same time domain as the transaction itself, such
as a local DNS query, or a ping request. Being able to realize
the ARP Response Time and factor it into the overall network
transaction time can be important.
ARP failure, is a show stopper for any network based transaction.
So understanding the behavior of ARP for a given entity in a network
can help in unraveling LAN issues.
ARP is a source of security concerns in LAN technology. The
ability to manipulate ARP to insert components into critical paths
of a network is a serious internal security issue. Detecting ARP
exploitation should be a fundamental security task for those concerned
about the internal threats to their network facilities.
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Corporate Overview
- QoSient, LLC is a provider of real-time infrastructure software
to measure, assess and manage Internet Network Quality of Service
(QoS). QoSient, LLC is a privately held Delaware limited liability
corporation, qualified to do business in the State of New York. Founder:
Carter Bullard President and CEO. Carter Bullard is the founder of
QoSient and is a recognized leader in the area of network security
and high performance network monitoring. Carter is a former member
of the Computer Emergency Response Team at Carnegie Mellon's Software
Engineering Institute, and has held senior positions at Nortel Networks,
Bay Networks and FORE Systems, as well as Research Faculty positions
at the Georgia Institute of Technology. Carter is currently active
in the development of industry standards in both network security
and performance monitoring. QoSient Products - QoSient products provide
a standard approach to comprehensive network auditing and measurement
for the fundamental elements of network quality: Availability, Capacity,
Responsiveness, Loss, Delay and Jitter. QoSient technology is particularly
well suited for network accounting and billing, operations, security
and performance management |
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