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3.2 KiB
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151 lines
3.2 KiB
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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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=============================================================================
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Layer 3 service plugin to support hardware based routing (SVI) on Brocade VDX
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=============================================================================
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https://blueprints.launchpad.net/neutron/+spec/brocade-l3-svi-service-plugin
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This blueprint exploits the L3 SVI functionality in the Brocade VDX
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switch via an L3 router service plugin.
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Problem description
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===================
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Brocade Hardaware supports SVI (Switch Virtual Interface) which provides ASIC
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level routing/gateway functionality in the switch for configured VLANs. This
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Service plugin provides support for this feature which enables line rate
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routing/gateway functionality.
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Please see definition of SVI in the references section of this document.
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Proposed change
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===============
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This proposal will introduce a Layer 3 service plugin which will interface
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with the Brocade VDX switch using NETCONF. NETCONF interface on the switch
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will be used to program the SVI on the switch.
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This plugin works in conjuction with Brocade ML2 Driver which will continue
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to manage networks, subnets, and ports.
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We plan to support the full API.
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Alternatives
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------------
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The alternative approach is to use the open source agent based layer 3 router
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plugin and update the L3 agent to interact with Brocade Hardware.
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Data model impact
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-----------------
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In the Brocade specific DB a table will be added to track the SVI created on
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a tenant basis. Mapping of the SVI to the VLAN will also be provided.
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new table: brocade_db.svi (id, vlan, tenant_id)
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id - standard uuid
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vlan - svi's associated vlan
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tenant_id: tenant this svi belongs to
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REST API impact
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---------------
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none
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Security impact
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---------------
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none
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Notifications impact
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--------------------
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none
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Other end user impact
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---------------------
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none
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Performance Impact
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------------------
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There are no changes to any existing code patterns, hence there is no
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significant change in performance profile. Instead of software L3 service
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this blueprrint provides the same service using the VDX hardware. NETCONF
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requests to the switch may add a very slight change to the execution time of
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the API but we expect this change to be minor and will affect only setups
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depolying this hardware based functionality.
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Other deployer impact
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---------------------
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none
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Developer impact
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----------------
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none
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Implementation
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==============
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Assignee(s)
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-----------
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Shiv Haris
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sharis@brocade.com
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IRC - shivharis
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Work Items
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----------
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* L3-SVI Service Plugin
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* DevStack related enhancements to support this plugin
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Dependencies
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============
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none
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Testing
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=======
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Complete unit test coverage of the code will be provided with mocked hardware.
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Brocade will provide Third-Party tempest code coverage of this functionality. This
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will be implemented as a CI (continuous integration) Testing. L3 routing tests will
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be enabled.
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Documentation Impact
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====================
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Documentation to configure and deploy this service plugin will be provided
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in the Openstack wiki.
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References
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==========
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SVI General definition:
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Wikipedia: http://en.wikipedia.org/wiki/Switvh_virtual_interface
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