When using the CloudBlade to integrate Prisma SD-WAN with Prisma Access, how does the system...

Comprehensive and Detailed Explanation

The stability of VPN tunnels in the Prisma SD-WAN + Prisma Access integration relies on standard IPSec mechanisms.

Dead Peer Detection (DPD):The CloudBlade configuration automatically enablesDPDon the IPSec tunnels it provisions.

Mechanism:DPD is a standard keepalive mechanism where the ION device sends periodic "R-U-THERE" messages to the Prisma Access gateway (and vice versa). If no acknowledgment is received after a specific count/timer, the ION marks the tunnel as down and attempts to re-key or switch to a backup path.

Synthetic Probes (B):While Synthetic Probes (part of ADEM or Path Quality monitoring)canbe configured to measure latency/loss, thefundamentalmechanism that keeps the IPSec security association (SA) active and detects link failure is DPD, not an application-layer probe.