Setup Guide

11 Dell EMC SmartFabric OS10 Switch Configuration Guide for VxRail 4.7
• Guarantees fast convergence if either a link or a device fails
• Provides link-level resiliency
• Assures high availability
• Allows a single device to use a LAG across two upstream switches
• Provides Layer 2 multipathing
Note: While VxRail nodes use active and standby network adapters instead of LAGs, other servers in the
rack can connect to the VLT switch pair with an LACP LAG for active/active Layer 2 multipathing. For more
information about VLT, see the Dell EMC SmartFabric OS10 User Guide Release 10.5.0.
3.1.2 Dual switch without VLT
The configuration of a switch pair without VLT is supported, but it does not provide the advantages of VLT
covered in the previous section.
The switch pair is cabled, as shown in Figure 8. The links connecting the two switches are configured in an
LACP port channel.
Rack 1
S5248F-Leaf1A S5248F-Leaf1B
LACP
1
VxRail node n
2
1
2
VxRail node 1
1
VxRail node 2
2
25GbE connections
100GbE LACP connections
Dual switch topology without VLT