Tag Archives: mtu

Recognizing IP MTU Issues

At some point, Network engineers will likely face some type of issue with MTU or maximum transmittable unit. Their first experience with this may be an eye opening and time consuming effort. After resolving the issue, those with a thirst … Continue reading

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Understanding Tunnel Path MTU Discovery

After experimenting with Tunnel Path MTU Discovery on Cisco IOS based devices, I understand it’s operation. The configuration is simple and there are only a couple of optional parameters that may be set. This feature basically extends the┬áPath MTU Discovery┬áto … Continue reading

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IP Fragmentation and MTU

Earlier this week, someone asked me a simple question about the “Fragment Offset” in an IP Packet Header. I have to admit that my understanding this field was slightly incorrect. Before I come clean with my misinterpretation, I wanted to … Continue reading

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