We are an ISP with several branches, having this typical diagram in a branch:
BGP router - mostly peering with our provider.
NAT Router - NAT functions and routing.
Access Router - bandwidth management and shaping, PPPOE, QOS.
We want to extend our service area, and would like to have outdoor router included in the outdoor unit we purchased with 2-3 OLTs:
Are there available routers we can use?
If you use this filter
There's only the RB5009UPr+S+OUT which is not CCR.
Why CCR ?
What are the requirements for that router ?
Maybe RB5009 is already enough ?
We will use the router for bandwidth management and shaping, PPPOE, QOS.
2-3 OLTs connected, and about 300 subscribers (ONUs) for now.
If RB5009UPr+S+OUT is okay for this, it would be good for us as we have experience with Router OS already.
You will probably max out the 5009 with 300 PPPoE users. If you’re starting with zero users and growing, it may be a good starter.
Is there any reason you can’t pass the PPPoE upstream to a larger BNG, and use an outdoor switch at the OLT?
We have not thought about this, thanks sirbryan for the idea.
We have not yet implemented the network extension using outdoor OLTs, although we already have the equipment (OLTs inside the outdoor cabinet box). We are also in negotiation with the power company to provide electricity to our own poles, so we can still modify our design.
Our concern is, there is a possibility we will reach more than 500 subscribers within 6 months.
If you have a cabinet, you could easily rack mount a CRS300 series switch, like a CRS309, CRS310, or CRS317 for aggregating back to the upstream site, or use a beefier router like the CCR2116 inside the box with the OLT.
I don’t know what fiber vendor you’re using, but most will support RADIUS accounting with DHCP and Option 82, along with rate-limiting by the ONT, removing the need for PPPoE. In that case, the CRS300’s (which are cheaper than the 2116’s) can do Layer 3 switching (a.k.a. routing) in hardware at wire speed.
Well, you could get two RB5009...OUT with VRRP/etc and load balance them if outdoor without cabinet was important. It be trickier config (and have not tested PPPoE for this case). So more idea... if you're really trying to do this at the tower/outdoor location.
Although @sirbryan is right passing PPPoE upstream seems like a better plan if possible.