Home > Integrated Products > VxBlock 1000 and 3-Tier Platform Reference Architectures > White Papers > VMware Cloud Foundation Stretched Cluster on Dell VxBlock 1000 Multi-Site > Connectivity
The following section discusses the network design for deploying two VxBlock 1000 systems in a stretched cluster configuration.
The physical and logical topology of AMP Central aligns with the physical and logical requirements of VCF. See the Release Certification Matrix (RCM) for the supported VCF release.
The stand-alone AMP Central uses dedicated management and ToR Cisco Nexus switches. An integrated AMP Central shares the ToR and management switches between VCF servers and the VCF resources.
The following table shows the specifications for AMP Central with VCF switches:
Switch | Specifications |
Cisco Nexus ToR | Cisco UCS VIC 1457 Quad Port 10 Gb or 25 Gb SFP28 mLOM |
Cisco Nexus management | Intel X550T Dual Port 10GBase-T LOM |
The ToR switch uses 100 GbE QSFP breakout transceivers to provide connectivity for the Cisco UCS VIC server. The ToR switch ports support up to four 25 GbE connections. By default, two transceivers per switch connect a minimum of four servers. Two servers are configured per switch port using two breakout cables per transceiver.
The following figure shows physical connectivity for an AMP Central ready node:
The vmnic assignment is as follows: