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PowerScale: Network Design Considerations
Executive summary Network architecture design Latency, bandwidth, and throughput Ethernet flow control SyncIQ considerations Quality of Service (QoS) Software-Defined Networking PowerScale OneFS ports SmartConnect considerations Ethernet, MTU, and IP overhead
Introduction
Ethernet packet
Ethernet payload
Jumbo frames
IP packet overhead
Data payload to Ethernet frame efficiency
ICMP and MTU with OneFS
OneFS MTU commands
VLAN and interface MTU
Confirming transmitted MTU
Access Zones best practices Source-Based Routing considerations Isilon 6th generation 1 GbE interfaces Intelligent Platform Management Interface IPv6 OneFS host-based firewall Network troubleshooting Appendix A: Supported network optics and transceivers Appendix B: Technical support and resources

VLAN and interface MTU

VLAN and interface MTU

  • VLAN-specific MTUs ensure a consistent MTU across all network device hops in a session. OneFS allows multiple VLANs on a single interface, providing support for multiple workloads. The interfaces support multiple VLANs and the associated MTUs for those VLANs. A VLAN’s MTU must be less than or equal to the parent interface’s MTU. If the parent interface is not explicitly configured, it will inherit the MTU of the VLAN with the greatest MTU.