What is SPI in IP SEC?

[Ravi_916]

What is SPI in IP SEC.

In Phase 1 SPI also known as Cookie. which is use to differentiate ISAKMP Packets.

but in Case of Phase 2, what is the work of SPI?

Because in Phase 2 Message ID is used to Differentiate Phase 2 Packets.

[Sheraz.Salim · Accepted solution]

there is a good explanation link here