Server
ip mptcp limits set subflow 8
Most peers will use only a couple of subflows (for example, one for Wi-Fi and one for cellular), so this sample command uses a limit of ‘4’ to limit resource use per MPTCP socket but still allow flexibility for failed subflow connections and attempts to re-establish subflows by the peer device.
https://legacy.netdevconf.info/0x14/pub/papers/59/0x14-paper59-talk-paper.pdf
Client
ip mptcp limits set subflow 4
ip mptcp endpoint add 10.10.10.216 subflow
ip mptcp endpoint add 10.48.248.174 subflow
ip mptcp endpoint add 149.0.184.127 subflow
ip mptcp endpoint add 176.218.115.208 subflow