more than one IP Pool on DHCP

RouterOS General
1

Hi!

I Have a problem with running more than one IP-Pool from same interface.

This is my setup:

[admin@MikroTik] /ip dhcp-server> print
Flags: X - disabled, I - invalid

NAME INTERFACE RELAY ADDRESS-POOL LEASE-TIME ADD-ARP

0 I server1 ether2 dhcp_pool1 6h

[admin@MikroTik] /ip dhcp-server> network print

ADDRESS GATEWAY DNS-SERVER WINS-SERVER DOMAIN

0 85.252.27.0/24 85.252.27.1 195.204.188.170
194.19.2.11
195.204.188.171
1 195.204.90.0/25 195.204.90.1 195.204.188.170
194.19.2.11
195.204.188.171

[admin@MikroTik] /ip> pool print

NAME RANGES

0 dhcp_pool1 85.252.27.4-85.252.27.245
1 dhcp_pool2 195.204.90.10-195.204.90.120
[admin@MikroTik] /ip>

I want the router to release from pool1 first until emtpty than from pool2, and ive set next-pool on pool1 till pool2. But nothing happens when pool1 is empty.

Anyone who know how i can do this?

Sincerely
Stig

2

If you don’t need two separate pools you can put both address ranges into a single pool.

/ip pool add name=“combined_pool” ranges=85.252.27.4-85.252.27.245,195.204.90.10-195.204.90.120

What Mikrotik version are you using? I’m not aware of any issues with the next pool option.. I’m using it on 3.0rc13..

-Gerard

3

Hi and thanks for the quick answear!

Im running 3.0RC13 too on a RB333. The thing that went wrong here was that we only used 2 ports 1 for outside(WAN) and 2 for inside(LAN), and I connected today a log-server to eth3 and enabled briding on 2 and 3. That was right, but than the pool2 stopped being used witch i thing is very strange. In not 100% shure it worked before I enabled briding but when i now changed pool2 fron ether2 til bridge1 it worked normally.

So this might be a little bug, but ill try remove the bridge and the log-server tomorrow to see if the same happens.

regards,
Stig

4

oh, that make sense then..

You have to make sure your dhcp server is on your bridge interface..

If you put a dhcp server on an ethernet interface that is a member of a bridge it will not work..

You’ll notice that the dhcp server turns red when it isn’t on the bridge interface..

-Gerard