Optix OSN1800V fiber optic transmission equipment equipment supports unified line veneer, supporting seamless sharing of line transmission bandwidth for services after scheduling of different service planes of OTN/SDH/PKT. 5U chassis supports up to 15 service slots, with ultra-high integration. The single subrack supports maximum 800G OTN capacity, 800G packet capacity, 280G SDH high order and 40G SDH low order capacity. Supports SDH service, PDH service, OTN service, Ethernet service, CPRI service, OBSAI service, SAN service, video and other service types. Supports point-to-point, chain, star, ring, ring with chain, ring intersection, ring tangent networking.

Problem Description

OSN1800V fiber optic transmission equipment OLP in-board 1+1 protection inversion, switch ping packet test lost 6 packets

Processing

1, the test details are:

(1) The switch carries out fast ping packets, going to ping 1 packet every 20ms, sending 500 packets at a time, and completing it in 10s.

(2) If the network management is used to test the OLP master and backup reversal method, 3-4 packets are lost.

(3) If the test is performed by pulling fibers on site, 4 packets are lost.

2, analyze the inversion log is normal, no abnormal alarms.

3. The switch further finds that the port has been down, so it is recommended to configure hold off time to realize the delayed down of the switch when the WDM OLP is inverted.

4. Re-test, 1 packet is lost.

Root cause

The switch is not configured for hold off time.

Solution

The switch is configured for hold off time.

Recommendations and Summary

1, docking issues, the details are important and need to be carefully understood.

2, the board 1 +1 protection inversion time ≤ 50ms, note that this time does not include the detection time. (See product documentation)

3, this case can be drawn on, the inversion of 1 packet loss is also possible.

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