3 ms·
The commercial internet services with 4 or 5 9 SLAs have multiple redundant lines to the building to guarantee this and they charge handsomely for it. Otherwise
by mysteria 3y ago
The commercial internet services with 4 or 5 9 SLAs have multiple redundant lines to the building to guarantee this and they charge handsomely for it. Otherwise a downed telephone pole or something will automatically bring the service down for a day or more.
BTW I run a serious network at home (Proxmox cluster, all enterprise gear, virtualized router with HA, UPS power) and only target 4 nines on the LAN. System updates and things like server crashes making the router failover to another node cause around 30 minutes worth of network downtime a year. If a core or floor switch fails it'll automatically take me over an hour to swap in a spare and configure it. I don't bother trying for that fifth nine and I'm a very demanding user.
Now if one of you have a consistent 5 nine home system I'd be curious to learn more about it. I'm guessing that would practically be a datacenter setup with CARP, dual switches, etc. - or you're just really really lucky.