Hi team, here's a new case.
Problem Description
In active-active services at a site, the distance between two sites is 30 km.
The remote link delay is long, and synchronization fails.
Symptom
For active-active services at a site, the distance between two sites is 30 km, the remote link delay is long, and the maximum synchronization rate is only 6 Mbit/s.
Cause
If the remote link is longer than 10 km, use WDM devices to connect to FC switches and configure long-distance static (LS) on FC switch ports.
Otherwise, the performance is poor.
Location Method
Log in to the switch and check whether the non-LS mode is configured for the port connecting the switch to the WDM network.
Run the switchshow command to view the information, as shown in the following figure.
Solution
Configure the port to work in LS mode.
Run the portcfglongdistance command to configure the port LS mode.
For details, see the switch documentation.
Post-Recovery Check
Check whether the delay and bandwidth of the remote link increase.
