Community discussions

MikroTik App
 
mvu2000
just joined
Topic Author
Posts: 5
Joined: Sat Aug 18, 2018 1:23 pm

Multi-ISP WAN Failover

Fri Jul 23, 2021 12:09 pm

Have a nice day, everyone!

I have the following network configuration:
NetworkRouting.jpg
There are several sites like site1 and site2!
I cannot manage WAN. It looks like a LAN with forbidden broadcasting to me.

I need to configure the routers so that if the main router is unavailable from the WAN, the site1 router automatically determines that it is necessary to send packets to the site2 router and site2 the router "understands" that to access the server, all packets must be sent through the VPN.
NetworkRoutingFailover.jpg
As far as I understand, I need to apply an OSPF.
Can you explain in detail (or give a link to an existing article) how to set it up?
Thanks a lot for any hints.
You do not have the required permissions to view the files attached to this post.
 
mvu2000
just joined
Topic Author
Posts: 5
Joined: Sat Aug 18, 2018 1:23 pm

Re: Multi-ISP WAN Failover

Tue Jul 27, 2021 1:10 pm

I configured OSPF, everything seems to be working. (if you are wondering, I had a problem setting up the firewall, so the OSPF didn't work right away)
But I see that OSPF forms such "multiple" routes:
OSPF Routing.PNG
Is this bad and means that the packet can be sent through any interface? Need to adjust the cost of routes? Or is everything ok?
You do not have the required permissions to view the files attached to this post.
 
DarkNate
Forum Veteran
Forum Veteran
Posts: 997
Joined: Fri Jun 26, 2020 4:37 pm

Re: Multi-ISP WAN Failover

Tue Jul 27, 2021 7:09 pm

You are not an ASN. You need only one edge router and managed switches to get this running. VLAN segregate the network.

Why do you have two extra routers for? You have a public /24 or something from the ISP?
 
User avatar
anav
Forum Guru
Forum Guru
Posts: 18958
Joined: Sun Feb 18, 2018 11:28 pm
Location: Nova Scotia, Canada
Contact:

Re: Multi-ISP WAN Failover

Tue Jul 27, 2021 9:26 pm

How are the sites connected if you can connect them without internet (same building and by what medium, fiber, ethernet, telephone line)?

Who is online

Users browsing this forum: BrianTax, GoogleOther [Bot], st3lios and 69 guests