Manage a router

Each router has its own page in Lighthouse. It shows the router’s state, its gateway to a public network, the subnets it routes, its static routes, and the floating IPs and servers that depend on it. To create a router, see Set up a router.

Open a router’s page

1. In the side menu, open Infrastructure, then select Routers under Networking.
2. Select the router’s name in the list.

You can also open it from a network’s page, under Internet Access, or from a floating IP’s page.

Read the header

The header shows the router’s name, with a Default badge for the project’s own router, and This router’s gateway, interfaces and routes. A router that wasn’t created in Lighthouse carries a Read Only badge and has no menu.

The menu holds the router’s actions: Rename Router, Set Gateway (or Change Gateway and Clear Gateway when it has one), Add Interface, Edit Static Routes and Delete Router. The same actions are in the router’s row menu on the list. See Set up a router for the gateway, interfaces and static routes.

Read the cards

Overview lists:

• Name and Status, for example Active.
• Admin State: Up when the router passes traffic, Down when it is turned off.
• Managed Here: Yes when the router was created in Lighthouse and you can change it.
• Default Router: Yes for the router made when a network in this project was first connected to a public network.
• ID, with a button to copy it, and Created.

Gateway shows the router’s link to a public network:

• Public Network: the public network it connects to.
• Gateway IPs: the router’s public addresses. No Gateway IP means none is assigned yet.
• Source NAT (SNAT): On or Off. See below.

A router without a gateway shows No Gateway. It only connects your private subnets.

Below them:

• Interfaces lists each Subnet the router routes, with its CIDR and Router Address. No subnets yet. Add an interface to route one. means it routes nothing yet.
• Static Routes lists each Destination and Next Hop, with a count such as 2 of 20. No static routes. means there are none.
• Floating IPs lists the floating IPs that reach the internet through this router, each with the private address it points to and its server. No floating IPs go through this router. means there are none.
• Servers On Its Subnets lists the servers with an address on a subnet this router connects. No servers on its subnets. means there are none.

Turn the router off or on

The switch next to Admin State turns the router off (Down) or on (Up). Select it, then confirm Turn Router Off or Turn Router On. While it’s off, servers behind it lose their connection through it.

Turn SNAT off or on

Source NAT (SNAT) lets servers without a public address reach the internet through the router’s own address. The switch next to Source NAT (SNAT) turns it Off or On. Confirm Turn SNAT Off or Turn SNAT On. With SNAT off, those servers lose outbound internet access.

Rename or delete a router

• Rename Router changes its name. You see Router Renamed.
• Delete Router removes its interfaces and gateway first, then the router. This can’t be undone. If you delete the Default Router, a new one is made the next time you connect a network. You see Router Delete Started, then Router Deleted.

If something goes wrong

• Router Not Found means the router was deleted, or it isn’t on one of your projects. Go back to Routers and check the list.
• If the menu and switches are missing, the router carries a Read Only badge, or you don’t have permission to manage networks. Ask your account owner.
• Another router already routes that subnet. Remove it there first. Remove the interface from the other router, then add it here.
• A floating IP or reserved address still reaches the internet through this router. Release or move it first. See Manage a floating IP.
• This router wasn’t created here, so it can’t be changed here.