Optimize network performance by calculating effective MTU (Maximum Transmission Unit) and TCP MSS based on your connection type. Supports Ethernet, PPPoE, VPN, and more.
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Maximum Transmission Unit (MTU) determines the largest packet size that can be transmitted without fragmentation. This calculator helps you determine the effective MTU and TCP Maximum Segment Size (MSS) based on your connection type and protocol overhead, ensuring optimal network performance.
Packets larger than the MTU must be fragmented, increasing latency and reducing throughput. Correctly sized packets transmit more efficiently.
VPN tunnels add protocol overhead, reducing effective MTU. Knowing the correct MTU prevents connection issues and slow speeds.
Many connectivity problems stem from MTU mismatches. Path MTU discovery failures cause black hole routing where packets disappear.
ISPs and network equipment need proper MTU settings. PPPoE connections commonly require MTU adjustments for reliable operation.
MTU (Maximum Transmission Unit) is the largest packet size that can traverse a network path without fragmentation. Oversized packets are either fragmented (causing overhead) or dropped (causing retransmissions). Correct MTU ensures efficient data transfer.