Hello,
The WAP371 has Roaming, but it is not seamless.
To have a seamless roaming, you need a wireless controller.
The roaming function of the WAP371 is not related to the clustering feature.
So even if you don't add the new WAPs to the cluster, they will behave the same way.
All you need is to make sure the SSID settings are the same on all APs.
Cluster, or as referred to in the Admin Guide - Single Point Setup feature, on this model is for management.
Admin guide reference:
https://www.cisco.com/c/dam/en/us/td/docs/wireless/access_point/csbap/wap371/administration/guide/1_0_0_10/1CSWAP371-SWUM100_1_0_0_10.pdf
Single Point Setup provides a centralized method to administer and control wireless services
across multiple devices. You use Single Point Setup to create a single group, or cluster, of
wireless devices. After the WAP devices are clustered, you can view, deploy, configure, and
secure the wireless network as a single entity. After a wireless cluster is created, Single Point
Setup also facilitates channel planning across your wireless services to reduce radio
interference and maximize bandwidth on the wireless network.
A cluster can propagate configuration information, such as VAP settings, QoS queue
parameters, and radio parameters. When you configure Single Point Setup on a device,
settings from that device (whether they are manually set or set by default) are propagated to
other devices as they join the cluster.
Hope that answers your question.
