[AF] Dual machines, active and standby, both active and standby machines prompt the local host, the other end is unknown
Problem Description
Dual machines active and standby, both active and standby machines prompt the local host, the other end is unknown
Effective troubleshooting steps
- The feedback shows that the system was working normally before the patch package was applied, but the corresponding patch package does not involve dual-machine related modules, so the problem can be ruled out as being caused by the patch package.
- Check the Interfaces configuration, it is normal;
- Packet capture revealed that there was an IP/MAC conflict, but the device was directly connected and there was no corresponding IP in the intranet;
macconflict.png (129.02 KB) - Check the basic configuration of the device:
2.png (101.25 KB)
1.png (84.1 KB)
Root cause
High availability in primary and backup devices – basic Info The local address IP is the same, one is manually filled in, and the other is selected
solution
According to the configuration of the device Interfaces on both sides, adjust to the correct configuration.
Suggestions and Conclusion
Basic configuration is the key. Sometimes after checking for a while, you may find that it is still a configuration problem. It is recommended that you check the basic configuration first when troubleshooting dual-machine problems.
Original Link
https://support.sangfor.com.cn/cases/list?product_id=13&type=1&category_id=1262&isOpen=true