CANOGA PERKINS 9145E NID Software Version 4.10 - Manual (Page 66)

9145E NID Software User’s Manual Diagnostics
Network Performance
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Note that not all firmware versions support CPM, SAM, and PLPM testing. Options for CPM,
SAM, and PLPM will not appear in unsupported versions or if the license for such is not enabled.
Table 4-1. shows the NID versions and features supported.
Table 4-1. PCS NID Feature Support
4.6.1 Performance Monitoring
Provided as a licensed option within the NID, the Performance Monitoring (PM) feature is
responsible for scheduling and executing performance tests across the network. Test Profiles are
created based on a Service Provider’s SLA for each CoS instance being monitored. A test profile
is created to ensure that a Service Provider is meeting performance criteria, to which they are
contractually obligated. PM testing of each CoS instance occurs for a finite amount of time (for
example, 10 seconds) and is scheduled to be executed in a round-robin fashion. The Master
NID designated for a service sequentially performs a test to each of the Slave NIDs associated
with a service and accumulates the test results. This scheme is also known as the “sprinkler
method” of testing. Synthetic test traffic is generated from the Master NID to each of the Slave
NIDs, much like an impact sprinkler distributes water in a sequential fashion to discrete areas
within a perimeter.
Once a test is completed, the results of each test are stored at the Master NID and transferred to
the EMS for storage and further analysis. Each designated Master NID is capable of supporting
tests for hundreds of Remote NIDs. Additionally, each Master NID is capable of distributing test
results to a maximum of eight CV-EMS systems. See Figure 4-20 for the maximum number of
test addresses supported by each NID.
Key performance parameters with Performance Monitoring that can be monitored include:
• Packets Sent
• Round Trip Packets
• Dropped Packets
• Out of Order Packets
• Data Delivery %
• Minimum, Maximum, Average and Total Round Trip Latency
• Local to Remote Minimum, Maximum, Average and Total Jitter
• Remote to Local Minimum, Maximum, Average and Total Jitter
The methods used to determine Latency, Jitter and Availability in this implementation conform to
the normative specifications found in MEF 10.1 – Ethernet Service Attributes Phase 2.
In order to ensure that the performance testing feature can be used to test either Layer 2 or Layer
3 networks (or a combination thereof), the Canoga Perkins Synthetic Test Traffic is architected as
NID Firmware Versions PM CPM SAM PLPM
9145E V1, V2.0
9145E V2.1, V2.2, V2.3 *
9145E V2.4 and above *
* PLPM support requires the presence of a Multipurpose Port (MPP) to connect the two
devices.