.. _routing-static: ###### 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 :abbr:`RIPB (Routing Information Base)` 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 ******************* .. cfgcmd:: set protocols static route next-hop
Configure next-hop `
` for an IPv4 static route. Multiple static routes can be created. .. cfgcmd:: set protocols static route next-hop
disable Disable this IPv4 static route entry. .. cfgcmd:: set protocols static route next-hop
distance 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 ===================== .. cfgcmd:: set protocols static route interface Allows you to configure the next-hop interface for an interface-based IPv4 static route. `` will be the next-hop interface where traffic is routed for the given ``. .. cfgcmd:: set protocols static route interface disable Disables interface-based IPv4 static route. .. cfgcmd:: set protocols static route interface distance 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. IPv4 BFD ======== .. cfgcmd:: set protocols static route next-hop
bfd Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address. .. cfgcmd:: set protocols static route next-hop
bfd profile Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address with BFD profile ``. .. cfgcmd:: set protocols static route next-hop
bfd multi-hop source-address Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address with source address `` but initiate a multi-hop session. DHCP Interface Routes ===================== .. cfgcmd:: set protocols static route dhcp-interface Defines route with DHCP interface supplying next-hop IP address. IPv4 Reject Routes ================== .. cfgcmd:: set protocol static route reject Defines route which emits an ICMP unreachable when matched. .. cfgcmd:: set protocols static route reject distance Defines distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance. .. cfgcmd:: set protocols static route reject tag Sets a tag for this route. .. cfgcmd:: set protocol static route6 reject Defines route which emits an ICMP unreachable when matched. IPv4 Blackhole Routes ===================== .. cfgcmd:: set protocols static route blackhole 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. .. cfgcmd:: set protocols static route blackhole distance Defines blackhole distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance. .. cfgcmd:: set protocols static route blackhole tag Sets a tag for this route. ******************* IPv6 Unicast Routes ******************* .. cfgcmd:: set protocols static route6 next-hop
Configure next-hop `
` for an IPv6 static route. Multiple static routes can be created. .. cfgcmd:: set protocols static route6 next-hop
disable Disable this IPv6 static route entry. .. cfgcmd:: set protocols static route6 next-hop
distance 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. .. cfgcmd:: set protocols static route6 next-hop
segments 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: .. code-block:: none 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' .. code-block:: none 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 ===================== .. cfgcmd:: set protocols static route6 interface Allows you to configure the next-hop interface for an interface-based IPv6 static route. `` will be the next-hop interface where traffic is routed for the given ``. .. cfgcmd:: set protocols static route6 interface disable Disables interface-based IPv6 static route. .. cfgcmd:: set protocols static route6 interface distance 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. .. cfgcmd:: set protocols static route6 interface segments 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: .. code-block:: none set protocols static route6 2001:db8:1000::/36 interface eth0 segments '2001:db8:aaaa::7/2002::4/2002::3/2002::2' IPv6 BFD ======== .. cfgcmd:: set protocols static route6 next-hop
bfd Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address. .. cfgcmd:: set protocols static route6 next-hop
bfd profile Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address with BFD profile ``. .. cfgcmd:: set protocols static route6 next-hop
bfd multi-hop source-address Configure a static route for `` using gateway `
` and use the gateway address as BFD peer destination address with source address `` but initiate a multi-hop session. IPv6 Reject Routes ================== .. cfgcmd:: set protocol static route6 reject Defines route which emits an ICMP unreachable when matched. .. cfgcmd:: set protocols static route6 reject distance Defines distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance. .. cfgcmd:: set protocols static route6 reject tag Sets a tag for this route. IPv6 Blackhole Routes ===================== .. cfgcmd:: set protocols static route6 blackhole 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. .. cfgcmd:: set protocols static route6 blackhole distance Defines blackhole distance for this route, routes with smaller administrative distance are elected prior to those with a higher distance. .. cfgcmd:: set protocols static route6 blackhole tag Sets a tag for this route. ************************ Alternate Routing Tables ************************ TBD Alternate routing tables are used with policy based routing by utilizing :ref:`vrf`.