MTU计算器 - 最大传输单元大小优化工具
计算网络配置的最优最大传输单元(MTU)大小。优化数据包传输效率，减少分片，提升以太网、WiFi、PPPoE和VPN连接的网络性能。
MTU Size Calculator
Enter your network parameters to calculate the optimal MTU size and maximize transmission efficiency.
Network Configuration
Select your network connection type for automatic MTU optimization
Maximum transmission unit size for your network interface
Advanced Options
IP protocol header size (typically 20 bytes for IPv4, 40 bytes for IPv6)
Additional protocol overhead (VPN, tunneling, VLAN tags)
Enable packet fragmentation for oversized packets
Support for frames larger than 1500 bytes (Ethernet only)
No results to display. Please perform an MTU calculation first.
About MTU Calculator
What is Maximum Transmission Unit (MTU)?
Maximum Transmission Unit (MTU) is the largest size of data packet that can be transmitted over a network connection without fragmentation. MTU size directly impacts network performance, efficiency, and reliability. Understanding and optimizing MTU is crucial for network administrators, system engineers, and anyone managing network infrastructure.
Key MTU Components
- Packet Header: Contains routing and protocol information
- Payload Data: The actual data being transmitted
- Frame Check Sequence: Error detection mechanism
- Protocol Overhead: Additional headers for encapsulation
- Network Interface Limits: Physical layer constraints
Why MTU Optimization Matters
Proper MTU configuration prevents packet fragmentation, reduces network overhead, improves transmission efficiency, and minimizes latency. Incorrect MTU settings can cause connection issues, slow performance, and increased packet loss in network communications.