Two-node cluster hot backup of a WLAN device fails

Two-node cluster hot backup modes include HSB+VRRP and HSB+dual-link. HSB+VRRP hot backup implements traffic switching through VRRP, and HSB+dual-link hot backup implements traffic switching through dual links.
- For details on troubleshooting of HSB+VRRP hot backup faults, see: VRRP HSB Fails.
- For details on troubleshooting of HSB+dual-link hot backup faults, see: HSB Between Two Links Fails.

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