Hey all, appreciate you taking the time to help.
First, some setup (no SIF output as they aren’t configured yet).
- All devices running RouterOS 7.17.2
- CRS328-24P-4S-RM
- L009UiG
- CAP aX (CAPsMAN wave2 managed via L009).
- WAN connection is currently DSL via a Proscend 180T SFP DSL modem module. (Sub gigabit)
- I’ve got CAPsMAN running on the L009UiG and the CAP aX successfully provisioned (albeit no internet connection, possibly because the CAP device is handling traffic instead of forwarding but I’ll figure that problem out separately).
- The L009 only has a single SFP cage (as with most of the mikrotik routers), and the CRS does not support NAT in L3.
My question is this, I’d like to run a router-on-a-stick configuration, using the L009 to handle routing via an fibre connection between the SFP ports on the CRS and L009. Primarily because even with HW offload and L3, the CRS cannot do NAT.
As understand, I could
- Bridge an SFP port to an ethernet port on the CRS, and then share internet via an ethernet port on the L009, and configure the L009 to get WAN on that ethernet port. Since I’m sub-gigabit for internet, that should be sufficient and I’d prefer to utilise the single SFP port on the L009 for traffic between the switch/router than for WAN.
- Create vlan/s and trunk all the data over fibre between an SFP port on the CRS and the single SFP port on the L009, handing off routing duties to the L009.
- Manage the CAP aX via CAPsMAN on the L009 and power it using the PoE out port (eth8).
Does this sound sensible or am I naive here? Any suggestions, pointers to documentation I should read or critique welcomed! Thanks.