Stability Test; Alarm-Handling Test; Table 6-10: Frame Loss Rate Test Results - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
[(input fps) - (output fps)] * 100 / (input fps)
fps = frames per second
For example, for a 100 Mbps test using 5 * VC-12 = 10 Mbps, with input fps = 148810 and output fps =
14881, the frame loss is:
148810 - 14881 = 133929 (a 90% loss).

Table 6-10: Frame loss rate test results

Frame size 64 bytes/
frame
Frame rate (% MFR)
100%

6.4.4 Stability Test

This test determines the stability of the network by checking that it can function with no errors for a
defined period of time.
To perform a stability test:
1. Create two unprotected Ethernet trails of any rate (for example, 10/100 Mbps) between two NEs.
2. Connect test equipment to both ports of one NE and connect two ports of the other NE (in the
relevant endpoint ports) through an Ethernet cable.
3. Configure the test equipment for manual testing according to the port rate and for any frame size.
4. Set the transmit rate in the test equipment to about 90% of the trail bandwidth.
5. Run this test for two hours, and verify that no errors appear in the test equipment.

6.4.5 Alarm-Handling Test

This test checks the alarm conditions forced on the NE and the subsequent action carried out by the NE. It
tests signal loss to both the data LAN port and to the optical interfaces.
To perform an alarm-handling test:
1. Create two Ethernet trails of any rate (for example, 10/100 Mbps) between two NEs.
2. Connect test equipment to both ports of one NE and connect two ports of the other NE (in the
relevant endpoint ports) through an Ethernet cable.
3. Disconnect the test equipment to create a signal loss to the data LAN port. This generates a 10/100
Mbps - Link Down alarm.
ECI Telecom Ltd. Proprietary
128 bytes/ 256 bytes/
frame frame
512 bytes/ 1024 bytes/
frame frame
Commissioning Tests
1280 bytes/ 1518 bytes/ frame
frame
6-11