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RE: [K12OSN] Switch question



> What does it mean  "When the back side of the router has multiple
clients
> attached.
> 254 client attach capable" (one sub-net, minus some internal
addresses)

Most broadband routers give out IPs from the RFC1918 reserved Class C
via DHCP (Most often 192.168.1.x)

A Class C IP range (/24 in CIDR notation) holds 256 IPs (192.168.1.0 ->
192.168.1.255)

.0, you can't use because it is the network number.
.1, you can't use because it is usually the network gateway (the
internal interface IP on the broadband router)
.255, you can't use because it is the broadcast address.

So in the end, you can have about 253 open IPs for workstations or
servers which the router can distribute via DHCP.  That's assuming you
add more hubs/switches via the ports on the back of the broadband
router.

- James









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