Dell EMC VxFlex Ready Node R740xd - IP Addresses for R640 and R740 Xd Servers; Vxflex os Management IP Network; Vxflex os Data IP Network for Subnet #1; Networking Connectivity Architecture and Cabling Best Practice for Linux Deployments

Networking connectivity architecture and cabling best
practice for Linux deployments
The following information describes connectivity architecture, cabling best practice information, and cable connection
examples from typical VxFlex OS configurations to help you plan your network.
Note: If you are not familiar with VxFlex Ready Node system architecture, refer to the "Architecture" chapter in
the Getting to Know VxFlex OS Guide .
The best way to use VLANs with VxFlex OS is to configure the switch port to Mode Access, and assign it to one VLAN.
A management switch that has only one use is recommended. Usually, this implies one IP subnet, but the switch can
contain several subnets on a single VLAN.
Note: AMS (R640 and R740xd systems only) uses APIPA IP addresses (169.254.x.x/16) for broadcast and unicast,
and this requires special configuration during deployment.
It is mandatory to set the management VLAN as either a Layer 2 VLAN without an IP address, or as VLAN 0 (meaning,
no VLAN). This facilitates a seamless onsite "Add Node" operation.
IP addresses for R640 and R740xd servers
Prepare IP addresses in your network for the VxFlex Ready Node servers in Linux-based environments, based on the
following calculations:
Note:
In addition to the networking requirements below, ensure that you have prepared the items described in
Additional equipment and network resource requirements on page 15 earlier in this guide.
Table 5 VxFlex OS management IP network
Item Description
N Number of nodes
IP address pools The pools of IP addresses used for static allocation for the following groups:
1. Node_MGMT_IP = Management IP addresses of the VxFlex Ready Node servers
2. BMC_MGMT_IP = iDRAC IP address for each node
The formula to calculate IP address subnet pool or subnet needs is: N*Node_MGMT_IP+N*BMC_MGMT_IP + Optional (AMS
server IP address)
Note: Each pool can belong to a single subnet or to several subnets, as long as the AMS server has routable
networking access to the Management IP address.
The VxFlex OS data IP network requires two separate subnets.
Table 6
VxFlex OS data IP network for Subnet #1
Item Description Comments
N Number of nodes
Network architecture and physical connectivity for Linux servers
30 VxFlex Ready Node Operating System Installation Guide for Linux