This article describes the procedure to perform diagnostics on ISL E Ports.
Use this procedure to configure a basic D_Port diagnostics session between two switches
These tests can be done if trunking is not being formed or to verify the length of the ISL.
INFO: The distance is based on the roundtrip time of a frame and can differ from the physical distance due to WDM equipment or patch panels.
A physical length difference of +/- 20 meters for ISLs within the same fabric is supported in the MetroCluster environment.
The test performs:
- Electrical loopback
- Optical loopback
- Measurement of the link distance
- Link traffic test