I have an RB4011iGS+ as my main router. I’ve got a CRS112 then as a POE switch. I then have a couple of CSS106-5G connected to ports on the CRS112
I have a PPPOE session directly configured on the router connected to a huwaei GPON device from the ISP.
I’ve just ordered a 5G broadband connecting from a mobile ISP as a backup. They are going to be shipping me a ZTE modem I believe.
This modem will be connected upstairs to one of the CSS106 devices.
What I’m wondering is how I can put this ZTE in bridge mode connected to the CSS106 and ultimately bridging back to the RB4011iGS? Is it possible to
use a VLAN to do this or how would I achieve this if indeed its possible.
If not then what other options would I have - I’d like to try to avoid double NAT BUT it absolutely wouldn’t be the end of the world - this is only for cases where the fibre goes down
You can definitely isolate traffic between RB4011 and ZTE from the rest of traffic by using VLANs. However this is separate issue from puting ZTE into bridge (as you surely realize yourself). Ideally you’ll do both and achieve nice failover to 5G.
How to configure VLANs? Each of your device types (RB4011, CRS, CSS) requires different configuration in order to function optimally, so you’ll have to dive deep into config (CSS, running SwOS, will be easiest) and you’ll have to pkan carefully as all devices will have to cooperate nicely or else nothing will work correctly. In principle it is possible to reconfigure your network without extensive downtime. However if you make mistakes, it might be necessary to reset to default config and re-do the config … which means uncomfortably long downtime. And by all means prepare backups of running config for all devices, both binary and text (in ROS that’s backup and /export) so you can either revert to current config or to help you reconfigure device slightly differently to avoid lock-out.
