- Written by Preyas Hathi
- Posted on 2月 7, 2020
- Updated on 2月 7, 2020
- 11331 Views
Path maximum transmission unit (MTU) is the lowest of the switch and router MTU values along a network path; it
- Written by Binoshmon T B
- Posted on 7月 22, 2020
- Updated on 6月 18, 2026
- 19572 Views
The TCP MSS clamping feature involves clamping the maximum segment size (MSS) in the TCP header of TCP SYN packets if it exceeds the configured MSS ceiling limit for the interface. Clamping MSS value helps in avoiding IP fragmentation in tunnel scenarios by ensuring that MSS is small enough to accommodate the extra overhead of GRE and tunnel outer IP headers. One of the most common use cases for this feature is connectivity towards Cloud providers via GRE which require asymmetric routing (for example DDoS protection).