On 12/16/23 11:41, Andy Smith wrote:
Hello,
On Sat, Dec 16, 2023 at 10:42:33AM -0500, gene heskett wrote:
Persuant to the dhcpd discussion, I have install a local isc-dhpd-server. I
setup a $20 wide block, starting at 192.168.71.100
I'm going to take a guess that you mean your pool is from .100 to
.119 (or .120?) as I've never in my life heard or seen the phrase "a
$20 wide block".
Actually I was thinking in hex when I wrote that, what I meant was 20
addresses in the pool.
then setup 3 host entries. I have it working but apparently I need some
clarification as a status request gets me a squawk about the host paragraph
that is actually working:
-------------------
Dec 16 09:47:16 coyote dhcpd[1895]: Dynamic and static leases present for
192.168.71.110.
It just means that you have a declaration for 192.168.71.110 while
also having a dynamic range that includes 192.168.71.110. dhcpd will
generally know it has assigned 192.168.71.110 already and not hand
it out when asked, so this is just a warning, but it is better
fixed.
I have now changed the printer phrase of the host definition to it
hostname, mkspi, and moved that fixed-address out of the pool
declaration. Also declared the domainname at the top and it is happy.
But it does an exit stage w/o logging any reason if I uncomment the next
host definition, shown as a copy/paste here:
subnet 192.168.71.0 netmask 255.255.255.0 {
range 192.168.71.100 192.168.71.120;
option routers 192.168.71.1;
option domain-name-servers 192.168.71.1;
}
host mkspi {
hardware ethernet 5a:c1:f0:8b:00:54;
fixed-address 192.168.71.121;
}
#host e5plus {
# hardware ethernet 5a:c1:f0:8b:00:55;
# fixed-address 192.168.71.122;
#}
#host tronxy {
# hardware ethernet 5a:c1:f0:8b:00:56;
# fixed-address 192.168.71,123;
#}
------------------
I get the impression I can have an unlimited number of "host" paragraphs
as long as there is not an actual clash in the addresses or macs? Aha!
slightly larger font in the paste and I now see a , where a . s/b fixing
that fixed it. I use nano a lot, but it could use a larger font for
these ancient eyeballs. So now I know how to add fixed-address use to
dhcpd.conf. Problem solve although I may have to do more editing to the
hosts file eventually. Thank you for your patience.
Q#1:Is this telling me I should move that mac's assignment to .90 or .121,
out of that "pool" from $100 to $120? Or move the pool so 110 does clash
with it?
Whichever you prefer. Just don't have static assignments that use
IPs from a range you hand out dynamically.
Q#2: can the current phrase host "printer" be replaced by the alias in the
servers /etc/hosts file?
I don't understand the question, sorry. You can call your hosts
whatever you like.
Show us the "host" block you have now and what you would like it
to be, if you want to ask questions about it, but I don't see what
issue it will make to call it whatever.
is it safe in a closed environment to use the same mac string in a
host description by just incrementing the last hex byte of the
dummy mac and the last .nnn of the address assigned?
You already made a choice as to what MAC address to use, so I fail
to see what relevance DHCP has here. Once you've decided what MAC
address you're setting, use that and put it in DHCP. Or are you
asking what MAC addresses are safe for you to use, generally?
Locally Administered MAC address ranges are any of:
X2‑XX-XX-XX-XX-XX
X6‑XX-XX-XX-XX-XX
XA‑XX-XX-XX-XX-XX
XE‑XX-XX-XX-XX-XX
where X can be any hex value.
Thanks,
Andy
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
