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Forum Discussion
JimTheGreek
Jun 14, 2021Tutor
Setup DHCP range
I'm about to do a full factory reset on my RAX80 and I'd like to reserve a range for assigned IP. What is best, to start the DHCP past the reserved range or have it at the beginning? For clarificati...
antinode
Jun 14, 2021Guru
> [...] I read a post saying that having the assigned IP area at the
> start (.1-.99) then then the DHCP pool. [...]
https://en.wikipedia.org/wiki/Internet_Protocol
https://en.wikipedia.org/wiki/IP_address
".1" is normally occupied by the router, so you'd use ".2" - ".99".
But which comes first between pool and non-pool makes no never-mind.
The DHCP server knows where the pool is, and what it's already granted,
and the reservations, which is all it needs to know.
No one (with a job) is stupid enough to scan through the ex-pool
addresses to find the start of the pool; the start of the pool is well
known.
> [...] I don't understand your statement... [...]
Apparently, I misread "below 100" as "100 and below", as if ".100"
were the DHCP server Finish IP Address.
But then "the reserved scope starts at 101" makes no sense. If the
pool ends at ".99" ("below 100"), then the non-pool range starts at
".100", not ".101". Sorry to add my confusion onto existing confusion.
One reasonable goal is to make it easy to distinguish between in-pool
and ex-pool. My (simple) point was that "If it looks like "1xx" or
"2xx", then it's <whatever>" is easy. "If it's ".101" or above" is too
messy.
JimTheGreek
Jun 14, 2021Tutor
But it WOULD be ez, all two digit IPs are reserved, all three digit IPs are in the pool.
- antinodeJun 14, 2021Guru
> But it WOULD be ez, [...]
Yes, but:
> [...] then "the reserved scope starts at 101" makes no sense. [...]
- JimTheGreekJun 15, 2021TutorPerhaps you didn’t understand my
- JimTheGreekJun 15, 2021TutorSorry, not enough coffee yet lol
Perhaps you didn’t understand my response & I know my English is not the best.
.1 - .99 is the reserved pool
.100 - .254 is the DHCP pool.
BTW, I’ll be doing this in the next hour or so as of this writing.
Thanks to all!- antinodeJun 15, 2021Guru
> Perhaps you didn't understand my response [...]
Nor you mine?
> .1 - .99 is the reserved pool
> ".1" is normally occupied by the router, so you'd use ".2" - ".99".
> .100 - .254 is the DHCP pool.
Fine with me, but inconsistent with "the reserved scope starts at
101" (as stated by the other fellow).