Hi user:
CE8850-32CQ-EI
Ports:
10GE SFP+ Ethernet Optical Port
A 10GE SFP+ Ethernet optical port supports auto-sensing to 1 Gbit/s, and can receive and send services at a rate of 1000 Mbit/s or 10 Gbit/s. Table 2-282 describes the attributes of a 10GE SFP+ Ethernet optical port.https://support.huawei.com/enterprise/en/doc/EDOC1000019246/d2b4bf4e/ce8850-32cq-ei
A VXLAN tunnel is identified by a pair of VTEP IP addresses. During VXLAN tunnel establishment, the local and remote VTEPs attempt to obtain the IP addresses of each other. A VXLAN tunnel can be established if the IP addresses obtained are reachable at Layer 3. When BGP EVPN is used to dynamically establish a VXLAN tunnel, the local and remote VTEPs first establish a BGP EVPN peer relationship and then exchange BGP EVPN routes to transmit VNIs and VTEPs' IP addresses.

https://support.huawei.com/enterprise/en/doc/EDOC1000173015?section=j006