The Packets, Life and everything
Some notes on TCP bandwidth. Maybe you've seen it before: a server has a 10 Gbps interface, the path is not congested, and a local test reaches line rate — but a single TCP transfer across a WAN or hybrid-cloud path stops at a fraction of the expected speed. The link is fast, yet the …
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Avocent ACS – Forcing MTU and MSS per Route The Situation A WAN link did not offer the full Ethernet MTU of 1500 bytes (tunnel/overlay overhead). Two effects came together: The WAN environment did not advertise the lower MTU properly – ICMP "Fragmentation Needed" (type 3, code 4) never made it back to the sender, …
! ipv6 unicast-routing !
Some interestion observation over the past weeks, is that i have seen Linux is selecting only even source ports. So lets have a closer look. An exampleDoes this have any effect? How does LACP work?Does this make a difference? Yes certainly it does make a diffrence. What can we do? Where does this come from? …
Continue reading "Source Port selection on Linux results allways in even ports"