Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

Configuring LLT over UDP

using IPv4

This appendix includes the following topics:

■ Using the UDP layer for LLT

■ Manually configuring LLT over UDP using IPv4

Using the UDP layer for LLT

Veritas Storage Foundation Cluster File System 5.1 SP1 provides the option of

using LLT over the UDP (User Datagram Protocol) layer for clusters using wide-area

networks and routers. UDP makes LLT packets routable and thus able to span

longer distances more economically.

When to use LLT over UDP

Use LLT over UDP in the following situations:

■ LLT must be used over WANs

■ When hardware, such as blade servers, do not support LLT over Ethernet

LLT over UDP is slower than LLT over Ethernet. Use LLT over UDP only when the

hardware configuration makes it necessary.

Manually configuring LLT over UDP using IPv4

The following checklist is to configure LLT over UDP:

■ Make sure that the LLT private links are on different physical networks.

Appendix