ovn-bgp-agent/doc/source/contributor/bgp_supportability_matrix.rst

BGP Supportability Matrix

The next sections highlight the options and features supported by each driver

BGP Driver (SB)

Exposing Method	Description	Expose with	Wired with	Expose Tenants	Expose only GUA	OVS-DPDK/HWOL Support	Implemented
Underlay	Expose IPs on the default underlay network	Adding IP to dummy nic isolated in a VRF	Ingress: ip rules, and ip routes on the routing table associated with OVS Egress: OVS flow to change MAC	Yes (expose_tenant_networks)	Yes (expose_ipv6_gua _tenant_networks)	No	Yes

BGP Driver (NB)

Note until RFE on OVN (https://bugzilla.redhat.com/show_bug.cgi?id=2107515) is implemented there is no option to expose tenant networks as we do not know where the CR-LRP port is associated to.

Exposing Method	Description	Expose with	Wired with	Expose Tenants or GUA	OVS-DPDK/HWOL Support	Implemented
Underlay	Expose IPs on the default underlay network	Adding IP to dummy nic isolated in a VRF	Ingress: ip rules, and ip routes on the routing table associated to ovs Egress: ovs-flow to change mac	No support until OVN has information about the CR-LRP chassis on	No	Yes

+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+ the SB DB +-----------------------+-------------+ | L2VNI | Extends the L2 segment on a given VNI | No need to expose it, automatic with the | Ingress: vxlan + bridge device | | No | No | | | | FRR configuration and the wiring | Egress: nothing | | | | +-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+ +-----------------------+-------------+ | VRF | Expose IPs on a given VRF (vni id) | Add IPs to dummy nic associated to the | Ingress: vxlan + bridge device | | No | No | | | | VRF device (lo_VNI_ID) | Egress: flow to redirect to VRF device | | | | +-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+ +-----------------------+-------------+ | Dynamic | Mix of the previous, depending on annotations it | Mix of the previous three | Ingress: mix of all the above | | No | No | | | exposes it differently and on different VNIs | | Egress: mix of all the above | | | | +-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+ +-----------------------+-------------+ | OVN-Cluster | Make use of an extra OVN cluster (per node) instead | Adding IP to dummy nic isolated in a VRF | Ingress: ovn routes, ovs flow (mac tweak)| | Yes | No | | | of kernel routing -- exposing the IPs with BGP is | (as it only supports the underlay option)| Egress: ovn routes and policies, | | | | | | the same as before | | and ovs flow (mac tweak) | | | | +-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+-------------+

BGP Stretched Driver (SB)

Exposing Method	Description	Expose with	Wired with	Expose Tenants	Expose only GUA	OVS-DPDK/HWOL Support	Implemented
Underlay	Expose IPs on the default underlay network	Adding IP routes to default VRF table	Ingress: ip rules, and ip routes on the routing table associated to ovs Egress: ovs-flow to change mac	Yes	No	No	Yes

EVPN Driver (SB)

Exposing Method	Description	Expose with	Wired with	Expose Tenants	Expose only GUA	OVS-DPDK/HWOL Support	Implemented
VRF	Expose IPs on a given VRF (vni id) -- requires newtorking-bgpvpn or manual NB DB inputs	Add IPs to dummy nic associated to the VRF device (lo_VNI_ID)	Ingress: vxlan + bridge device Egress: flow to redirect to VRF device	Yes	No	No	No