Tencent Technology (Shenzhen) Datacenter Networking

Challenge

Datacenter scale growth pushed network complexity up: the architecture needed one-hop leaf-to-leaf reachability with consistent latency, and server scale from 1k to 100k per cluster.

Solution

Direct-connected the datacenter core to metro secondary-core nodes, shortening server traffic paths and taking pressure off the backbone.

Used VSU virtualization to merge physical switch pairs into one logical switch, and VXLAN+EVPN with M-LAG for virtual networking and link load sharing.

Results

• One-hop forwarding across leafs with hardware-level redundancy and uninterrupted service during upgrades.
• Cross-datacenter L2 connectivity for flexible resource allocation and large-scale tenant isolation.