HI Dominic,
As per my knowledge it will not afftect the operation.
When implementing Loop Guard, you should be aware of the following implementation guidelines;
- Loop Guard cannot be enabled on a switch that also has Root Guard enabled
- Loop Guard does not affect Uplink Fast or Backbone Fast operation
- Loop Guard must be enabled on point-to-point links only
- Loop Guard operation is not affected by the Spanning Tree timers
- Loop Guard cannot actually detect a unidirectional link
- Loop Guard cannot be enabled on Port Fast or Dynamic VLAN ports
You can use Loop Guard to determine if a root port or an alternate/backup root port receives BPDUs. If the port does not receive BPDUs, Loop Guard puts the port into an inconsistent state (blocking) until the port starts to receive BPDUs again. A port in the inconsistent state does not transmit BPDUs. If the port receives BPDUs again, the protocol removes its loop-inconsistent condition, and the STP determines the port state because such recovery is automatic.
Loop Guard isolates the failure and allows STP to converge to a stable topology without the failed link or bridge. Disabling Loop Guard moves all loop-inconsistent ports to the listening state.
Regards
Please rate if it helps.
