Using a dynamic routing protocol such as BGP guarantees that your system is always aware of network changes and facilitates administration.
As shown in the following figure, you can restrict advertising the private IP space on the ToR by using a prefix list that denies the private IP subnets. You can apply the prefix list as a route map on the connection between the ToR and the border.
The Software Load Balancer (SLB) running in the Dell EMC Integrated System peers to the ToR devices so that the SLB can dynamically advertise VIP addresses.
To ensure that user traffic immediately and transparently recovers from failure, configure the virtual private cloud (VPC) or multi-chassis link aggregation (MLAG) between the ToR devices. This configuration enables MLAG use to the hosts, and hot standby router protocol (HSRP) or virtual router redundancy protocol (VRRP) that provides network redundancy for the IP networks.
Figure 52. BGP routing for Microsoft Azure Stack Hub cloud network