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89 lines
10 KiB
ReStructuredText
..
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License.
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http://creativecommons.org/licenses/by/3.0/legalcode
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Convention for heading levels in Neutron devref:
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======= Heading 0 (reserved for the title in a document)
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------- Heading 1
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~~~~~~~ Heading 2
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+++++++ Heading 3
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''''''' Heading 4
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(Avoid deeper levels because they do not render well.)
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=========================
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BGP Supportability Matrix
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=========================
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The next sections highlight the options and features supported by each driver
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BGP Driver (SB)
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---------------
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+--------------------+-----------------------+-----------+
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| Exposing Method | Description | Expose with | Wired with | Expose Tenants | Expose only GUA | OVS-DPDK/HWOL Support | Supported |
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+=================+=====================================================+==========================================+==========================================+==========================+====================+=======================+===========+
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| 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 | Yes | Yes | No | Yes |
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| | | | routing table associated with OVS | | (expose_ipv6_gua | | |
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| | | | Egress: OVS flow to change MAC | (expose_tenant_networks) | _tenant_networks) | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+--------------------+-----------------------+-----------+
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BGP Driver (NB)
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---------------
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OVN version 23.09 is required to expose tenant networks and ovn-lb, because
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CR-LRP port chassis information in the NB DB is only available in that
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version (https://bugzilla.redhat.com/show_bug.cgi?id=2107515).
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The following table lists the various methods you can use to expose the
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networks/IPS, how they expose the IPs and the tenant networks, and whether
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OVS-DPDK and hardware offload (HWOL) is supported.
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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| Exposing Method | Description | Expose with | Wired with | Expose Tenants or GUA | OVS-DPDK/HWOL Support | Supported |
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+=================+=====================================================+==========================================+==========================================+==========================+=======================+===============+
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| 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 | Yes | No | Yes |
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| | | | routing table associated to OVS | | | |
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| | | | Egress: OVS-flow to change MAC | (expose_tenant_networks) | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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| L2VNI | Extends the L2 segment on a given VNI. | No need to expose it, automatic with the | Ingress: vxlan + bridge device | N/A | No | No |
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| | | FRR configuration and the wiring. | Egress: nothing | | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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| VRF | Expose IPs on a given VRF (vni id). | Add IPs to dummy NIC associated to the | Ingress: vxlan + bridge device | Yes | No | No |
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| | | VRF device (lo_VNI_ID). | Egress: flow to redirect to VRF device | (Not implemented) | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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| Dynamic | Mix of the previous. Depending on annotations it | Mix of the previous three. | Ingress: mix of all the above | Depends on the method | No | No |
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| | exposes IPs differently and on different VNIs. | | Egress: mix of all the above | used | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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| OVN | 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 | Yes | Yes. Only for |
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| | of kernel routing -- exposing the IPs with BGP is | (as it only supports the underlay | Egress: OVN routes and policies, | (Not implemented) | | ipv4 and flat |
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| | the same as before. | option). | and OVS flow (MAC tweak) | | | provider |
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| | | | | | | networks |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+--------------------------+-----------------------+---------------+
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BGP Stretched Driver (SB)
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-------------------------
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+----------------+--------------------+-----------------------+-----------+
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| Exposing Method | Description | Expose with | Wired with | Expose Tenants | Expose only GUA | OVS-DPDK/HWOL Support | Supported |
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+=================+=====================================================+==========================================+==========================================+================+====================+=======================+===========+
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| Underlay | Expose IPs on the default underlay network. | Adding IP routes to default VRF table. | Ingress: ip rules, and ip routes on the | Yes | No | No | Yes |
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| | | | routing table associated to OVS | | | | |
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| | | | Egress: OVS-flow to change MAC | | | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+----------------+--------------------+-----------------------+-----------+
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EVPN Driver (SB)
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----------------
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+----------------+--------------------+-----------------------+-----------+
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| Exposing Method | Description | Expose with | Wired with | Expose Tenants | Expose only GUA | OVS-DPDK/HWOL Support | Supported |
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+=================+=====================================================+==========================================+==========================================+================+====================+=======================+===========+
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| VRF | Expose IPs on a given VRF (vni id) -- requires | Add IPs to dummy NIC associated to the | Ingress: vxlan + bridge device | Yes | No | No | No |
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| | newtorking-bgpvpn or manual NB DB inputs. | VRF device (lo_VNI_ID). | Egress: flow to redirect to VRF device | | | | |
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+-----------------+-----------------------------------------------------+------------------------------------------+------------------------------------------+----------------+--------------------+-----------------------+-----------+
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