The error message "channel-misconfig error detected" indicates a misconfiguration in the EtherChannel setup between two switches. This can occur when there is a mismatch in EtherChannel protocols being used on each switch involved in the EtherChannel configuration. To resolve this issue, both switches should be configured to use either PAgP (Port Aggregation Protocol) or LACP (Link Aggregation Control Protocol), ensuring protocol consistency across both switches. References: Implementing and Operating Cisco Service Provider Network Core Technologies