TOI Author :: Binoshmon T B

This feature serves as a valuable tool for pinpointing the nature of network traffic at a device under congestion. By mirroring packets from congested queues to a designated mirror destination or CPU for analysis and monitoring, it provides network administrators and operators with the capability to gain an understanding of the traffic contributing to the congestion.

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.