Your organization might face challenges with agent connections traversing multiple ISPs and network hops, resulting in varying MTU values lower than the standard 1500 bytes. This situation can lead to excessive fragmentation, additional overhead, lower throughput, and dropped packets, ultimately causing poor performance and user frustration. Manual configuration of optimal MTU in such diverse environments is time-consuming, repetitive, and not scalable.

The optimized Prisma Access Agent MTU feature addresses these pain points by automatically determining and applying the optimal maximum transmission unit (MTU) size for agent connections. Optimized MTU is enabled by default in Prisma Access Agent to help improve connection stability and performance without manual intervention across various network conditions. This feature supports IPv4 tunnels and is compatible with IPSec and SSL tunnel protocols. It's valuable for organizations with remote users connecting through different ISPs or those frequently encountering MTU-related connectivity issues. By utilizing this feature, you can expect improved network throughput, reduced packet fragmentation, fewer retransmissions, enhanced end-user experience, and increased productivity. You might also experience a decrease in support escalations related to connection performance issues.

Originally available on Windows Prisma Access Agents, optimized MTU support is extended to macOS agents, providing consistent MTU optimization across both major desktop platforms.

Although optimized MTU is enabled by default for all Prisma Access Agents, you can manually configure and override the PMTU value if needed.