Dual WAN Routing

[editInsert]

Hello,

I am not savvy and will likely have to look up everything that someone suggests I try.  Please have patience with my post and excuse any ignorant requests.

I would like to have two ISPs at my home.  I would like ISP A to service all home connections.  I would like ISP B for business.  I would also like for either ISP network to use the same printer.  

I would like for a fail over for B to A but not A to B.  I have a Cisco SG300 switch and presume I will need to purchase a Dual WAN router.  Do those routers allow for fail over like I am talking about?  I thought that might be accomplished with VLANs.  1 VLAN for home devices, 1 VLAN for the business connectivity, then 1 VLAN for the printer.  

My thought is 

VLAN 10 for home devices, in an ISP A outage, these stop working

VLAN 20 for business devices, in an ISP B outage these fail over to ISP A

VLAN 30 for printing from either of the VLANs

Does this make sense?  Am I making this harder than it needs to be?  Would it just be better to have the business laptop hardwired to ISP B and Wifi to ISP A with printer residing on ISP A network?  I'm thinking this would require the least amount of equipment and would be the least amount of headache due to my ignorance.  What are your thoughts?

[MHM Cisco World]

only solution here is 
PBR with set ip next-hop verify.

[paul driver · Accepted solution]

Hello
Let’s say these connections will be internet broadband connections using different ISPs each providing you with 6 viable public ip addresses, The main goal you have is to traffic engineer only your internal vlan 20 network to use both circuits simultaneously and accommodate failover.

@MHM Cisco World  is correct in that policy based routing would be viable along with default routing and network translation.

Basic premise would be:

• A default route pointing to your main ISP1 (this would accommodate vlan 10 users)
• Policy route vlan 20 via ISP2 if/when ISP2 connection faiils this traffic would failover to ISP1 via the default route
• Statically network translate vlan 30 printer both to an isp1 & isp2 routable address
• Dual network translate vlan 20 users.

Please review attached file for a possible solution based on the above assumption;

[editInsert]

Thank you both very much for your replies.  I think I have some follow up questions now.  Primarily due to my ignorance.  

In the reply from @paul driver there is a section titled basic premise.  I will do my best to find instructions on how to do this.  In the mean time, are you aware of any instructional pieces on accomplishing this?  

[paul driver]

Hello @editInsert 
 It isn’t ignorance asking for assistance on a subject your are unfamiliar with.

Let’s start with the basics
what type of:
isp connections do you have
Wan rtr you are using 
any other lan device (switch/rtr)

[editInsert]

ISP A = Spectrum cable service DHCP

ISP B = ATT DSL phone copper lines I'm guessing this will be DHCP as well.  Typically business class and getting Static is an added cost.

Router = haven't purchased yet but will likely use TP-Link ER 605. 

Switch = Cisco SG300 28PP , is this switch capable of handling two WAN inputs without the need of a router?  I'm guessing no.

APs will be TP link equipment I already have that will be in AP mode.

I prefer TP Link simply for their Tether app, being able to disallow a certain Xbox when needed.  I think the router would be best as DHCP server but am open to suggestions or maybe my specs require different hardware to serve that role.

[paul driver]

Hello
with those type of connections i would envisage your wan connections will have already been Natted 
Lastly i would suggest to go for a router preferably supporting NAT and  NAT- traversal (just incase you need to vpn at some point)