To me it seems to make a medium to large enterprise network work, it requires a lot of different features. In the past most of these features lived on the switches and routers, and hosts were dumber—and we made the magic happen.
But I’ve kind of felt like there’s a trend to move those features and complexity onto the hosts until we’re left with a simple network.
Just some small examples I remember a time when our systems guys always wanted lacp port channels. Now they just want stand alone ports and they do nic teaming that’s independent of our switch.
Also I read in another thread here that the op’s sys admin guys want to run hyper-v network virtualization which is basically switch independent vxlan... not sure how that works but it seems to move the complexity of vxlan completely off the routers/switches and onto the hosts.
Another good example is multicast. You used to have to configure PIM for stuff like iptv, media conferencing, and music on hold. Now you can easily run all of those with zero multicast routing... because vendors started coming out with media servers that basically act like rendezvous point and abstract multicast into the application layer.
It seems like after a point Networks won’t have rich features and complex configuration to make stuff work any more. Or like server guys said screw you to the network team and can do most of our stuff on the hosts without our help anymore.
Anyone else notice this, or is it just me?
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