...
| Code Block |
|---|
|
/ip dhcp-relay add name=Local1-Relay interface=Local1 \
dhcp-server=192.168.0.1 local-address=192.168.1.1 disabled=no
/ip dhcp-relay add name=Local2-Relay interface=Local2 \
dhcp-server=192.168.0.1 local-address=192.168.2.1 disabled=no
[admin@DHCP-Relay] ip dhcp-relay> print
Flags: X - disabled, I - invalid
# NAME INTERFACE DHCP-SERVER LOCAL-ADDRESS
0 Local1-Relay Local1 192.168.0.1 192.168.1.1
1 Local2-Relay Local2 192.168.0.1 192.168.2.1
[admin@DHCP-Relay] ip dhcp-relay> |
DHCP Relay with VRF (will be supported soon)
Let's take previous setup but we'll consider that interface to DHCP server and interfaces to DHCP clients are added in VRF:
| Code Block |
|---|
|
/ip vrf
add interfaces=To-DHCP-Server name=vrf_server
add interfaces=Local2 name=vrf2
add interfaces=Local1 name=vrf1 |
In DHCP-relay configuration dhcp-server-vrf should be added:
| Code Block |
|---|
|
ip dhcp-relay/set dhcp-server-vrf=vrf_server numbers=0,1 |
As due to VRF configuration there are several routing-tables - we should add additional routes:
| Code Block |
|---|
|
/ip route
add disabled=no distance=1 dst-address=192.168.0.0/24 gateway=To-DHCP-Server@vrf_server pref-src="" routing-table=vrf1 scope=10 suppress-hw-offload=no \
target-scope=10
add disabled=no distance=1 dst-address=192.168.0.0/24 gateway=To-DHCP-Server@vrf_server pref-src="" routing-table=vrf2 scope=10 suppress-hw-offload=no \
target-scope=10
add disabled=no dst-address=192.168.1.0/24 gateway=Local1@vrf1 routing-table=vrf_server suppress-hw-offload=no
add disabled=no distance=1 dst-address=192.168.2.0/24 gateway=Local2@vrf2 pref-src="" routing-table=vrf_server scope=30 suppress-hw-offload=no \
target-scope=10 |
To achieve successful DHCP-server - DHCP-relay communication we should add NAT rules:
| Code Block |
|---|
|
/ip firewall nat
add action=dst-nat chain=dstnat dst-address=192.168.2.1 dst-port=67 in-interface=To-DHCP-Server protocol=udp src-address=192.168.0.1 to-addresses=\
192.168.0.2
add action=dst-nat chain=dstnat dst-address=192.168.1.1 dst-port=67 in-interface=To-DHCP-Server protocol=udp src-address=192.168.0.1 to-addresses=\
192.168.0.2 |