Obtain Qos Measurement Tools; Measure End-To-End Network Delay - Nortel 1000 Description, Installation And Operation Manual

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Figure 30
QoS level with G.723 codec
250
200
150
100
50
0
0 0.5

Obtain QoS measurement tools

Measure end-to-end network delay

553-3001-363 Standard 2.00
ITG engineering guidelines
QoS levels with G.723.1 (6.3 kbps)
Fair
1 1.5
PING and Traceroute are standard IP tools that are usually included with a
network host's TCP/IP stack. A survey of QoS measurement tools and
packages, including commercial ones, can be found in the home page of the
Cooperative Association for Internet Data Analysis (CAIDA) at
http://www.caida.org. These include delay monitoring tools that include
features like timestamping, plotting, and computation of standard deviation.
The basic tool used in IP networks to measure end-to-end network delay is
the PING program. PING takes a delay sample by sending an ICMP packet
from the host of the PING program to a destination server. PING then waits
for the packet to make a round trip. A sample of PING is as follows:
Richardson3% PING -s santa_clara_itg4 60
September 2004
Poor
2 2.5
Packet Loss (%)
Very Poor
3 3.5 4 4.5