Dell S4048T Configuration Manual page 209

in "full mesh." As seen in the illustration below, four routers connected in a full mesh have three peers each,
six routers have five peers each, and eight routers in full mesh have seven peers each.
Figure 23. BGP Routers in Full Mesh
The number of BGP speakers each BGP peer must maintain increases exponentially. Network management
quickly becomes impossible.
Border Gateway Protocol IPv4 (BGPv4) 209