diff --git a/src/core/network.ts b/src/core/network.ts
index 2839983..1983b6e 100644
--- a/src/core/network.ts
+++ b/src/core/network.ts
@@ -31,7 +31,7 @@ export class NetworkHub {
   kdTree: KDTree // to find nearest neighbors
 
   PresetTopos: { [name: string]: any } = presetTopos
-  SelectedTopo = ref('Random')
+  SelectedTopo = ref('5G-TSN-TSCH') // realistic topo example
 
   asnTimer: any
   SignalReset = ref(0)