Static
Static routes are manually configured routes, which, in general, cannot be updated dynamically from information VyOS learns about the network topology from other routing protocols. However, if a link fails, the router will remove routes, including static routes, from the RIPB that used this interface to reach the next hop. In general, static routes should only be used for very simple network topologies, or to override the behavior of a dynamic routing protocol for a small number of routes. The collection of all routes the router has learned from its configuration or from its dynamic routing protocols is stored in the RIB. Unicast routes are directly used to determine the forwarding table used for unicast packet forwarding.
IPv4 Unicast Routes
Configure next-hop <address> for an IPv4 static route. Multiple static routes can be created.
Disable this IPv4 static route entry.
Defines next-hop distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
Range is 1 to 255, default is 1.
Note
Routes with a distance of 255 are effectively disabled and not installed into the kernel.
IPv4 Interface Routes
Allows you to configure the next-hop interface for an interface-based IPv4 static route. <interface> will be the next-hop interface where traffic is routed for the given <subnet>.
Disables interface-based IPv4 static route.
IPv4 BFD
Configure a static route for <subnet> using gateway <address> and use the gateway address as BFD peer destination address.
Configure a static route for <subnet> using gateway <address> and use the gateway address as BFD peer destination address with BFD profile <profile>.
DHCP Interface Routes
IPv4 Reject Routes
Defines route which emits an ICMP unreachable when matched.
Defines distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
IPv4 Blackhole Routes
Use this command to configure a “black-hole” route on the router. A black-hole route is a route for which the system silently discard packets that are matched. This prevents networks leaking out public interfaces, but it does not prevent them from being used as a more specific route inside your network.
Defines blackhole distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
IPv6 Unicast Routes
Configure next-hop <address> for an IPv6 static route. Multiple static routes can be created.
Disable this IPv6 static route entry.
Defines next-hop distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
Range is 1 to 255, default is 1.
Note
Routes with a distance of 255 are effectively disabled and not installed into the kernel.
It is possible to specify a static route for ipv6 prefixes using an SRv6 segments instruction. The / separator can be used to specify multiple segment instructions.
Example:
set protocols static route6 2001:db8:1000::/36 next-hop 2001:db8:201::ffff segments '2001:db8:aaaa::7/2002::4/2002::3/2002::2'
vyos@vyos:~$ show ipv6 route
Codes: K - kernel route, C - connected, S - static, R - RIPng,
O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
v - VNC, V - VNC-Direct, A - Babel, F - PBR,
f - OpenFabric,
> - selected route, * - FIB route, q - queued, r - rejected, b - backup
t - trapped, o - offload failure
C>* 2001:db8:201::/64 is directly connected, eth0.201, 00:00:46
S>* 2001:db8:1000::/36 [1/0] via 2001:db8:201::ffff, eth0.201, seg6 2001:db8:aaaa::7,2002::4,2002::3,2002::2, weight 1, 00:00:08
IPv6 Interface Routes
Allows you to configure the next-hop interface for an interface-based IPv6 static route. <interface> will be the next-hop interface where traffic is routed for the given <subnet>.
Disables interface-based IPv6 static route.
Defines next-hop distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
Range is 1 to 255, default is 1.
It is possible to specify a static route for ipv6 prefixes using an SRv6 segments instruction. The / separator can be used to specify multiple segment instructions.
Example:
set protocols static route6 2001:db8:1000::/36 interface eth0 segments '2001:db8:aaaa::7/2002::4/2002::3/2002::2'
IPv6 BFD
Configure a static route for <subnet> using gateway <address> and use the gateway address as BFD peer destination address.
Configure a static route for <subnet> using gateway <address> and use the gateway address as BFD peer destination address with BFD profile <profile>.
IPv6 Reject Routes
Defines route which emits an ICMP unreachable when matched.
Defines distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
IPv6 Blackhole Routes
Use this command to configure a “black-hole” route on the router. A black-hole route is a route for which the system silently discard packets that are matched. This prevents networks leaking out public interfaces, but it does not prevent them from being used as a more specific route inside your network.
Defines blackhole distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance.
Alternate Routing Tables
TBD
Alternate routing tables are used with policy based routing by utilizing VRF.