How to configure roaming on an AC

By default, the AC supports intra-AC roaming, which can be implemented as long as the basic WLAN services are configured and the source and destination APs have the same SSID and security policy.
To implement inter-AC roaming, you need to configure the master controller, mobility group, and home agent.
Note the following points when configuring WLAN roaming:
1. Two APs must use the same SSID and security profile.
2. In the direct forwarding mode, services of a roaming user may be interrupted for a short period because ARP entries of the access device connected to an AP do not age in time. To prevent this problem, run the learn client ip-address enable command in the VAP profile view on the AC to enable STA IP address learning. This function enablesAPs to promptly send gratuitous ARP packets to the access device for ARP entry updates, so that user services will not be interrupted during roaming. By default, STA IP address learning is enabled.
3. A maximum of 16 ACs can be added to a mobility group. An AC can be added only to one mobility group.
4. ACs in the same mobility group must use the same software version, otherwise inter-AC roaming may fail.
5. In dual-link hot standby (HSB) scenarios, roaming between active and standby ACs is not supported. Service interruption may occur if users roam in this scenario.

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