EIR configuration test (non-color-aware)

../../_images/eth-trafpol-noncolor.png

This task verifies that a non-colored Ethernet service QoS profile has the expected behavior. It is assumed that the service has a QoS profile defined with CIR and EIR parameters as well as maximum frame loss ratio, delay, and jitter values for conforming frames. The test being non-color-aware means that there is only one flow. For the generated flow the following parameters need to be specified: frame size, source and destination UDP port, DSCP value, and VLAN priority (p-bits).

Reference

The test performed conforms to ► ITU-T Y.1564 section 8.1.2, test B.2 (“EIR configuration test, non-colour aware”).

Test procedure

  • The sender Test Agent generates frames at a rate of CIR + EIR.

  • The receiver Test Agent measures received rate, loss, delay, and jitter on the flow.

Fail criteria

  • The test fails if the measured rate is less than CIR × (1 – Max frame loss / 100).

Parameters

General

  • Sender: The sender Test Agent interface.

  • Receiver: The receiver Test Agent interface.

  • Test duration (s): Duration of the test in seconds. Min: 5 s. Max: 60 s. Default: 20 s.

  • Wait for ready: Time to wait before starting this test step. The purpose of inserting a wait is to allow all Test Agents time to come online and acquire good time sync. Min: 1 min. Max: 24 hours. Default: “Don’t wait”, i.e. zero wait time.

QoS profile

  • CIR (Mbit/s): Committed Information Rate. Min: 0.1 Mbit/s. Max: 10,000 Mbit/s. No default.

  • EIR (Mbit/s): Excess Information Rate. Min: 0.1 Mbit/s. Max: 10,000 Mbit/s. No default.

  • Max frame loss (%): Maximum frame loss ratio for conforming packets. Min: 0%. Max: 100%. No default.

Traffic profile

  • Frame size (bytes): Ethernet frame size in bytes. Min: 64 bytes. Max: 1514 bytes. Default: 512 bytes.

  • Source UDP port: The source UDP port to use. Range: 1 … 65535. Default: 5000.

  • Destination UDP port: The destination UDP port to use. Range: 1 … 65535. Default: 5000.

  • DSCP: Differentiated Services Code Point. Min: 0. Max: 63. Default: 0.

  • VLAN priority (PCP): Priority Code Point in VLAN header. Min: 0. Max: 7. Default: 0.

Result metrics

  • Rate (Mbit/s): Ethernet data rate.

  • Loss (%): Packet loss.

  • Delay (ms): Average one-way delay.

  • Jitter (ms): Jitter (delay variation).

  • Pass/fail outcome of test.