Bug 1838317

Summary: [RFE] Allow gateway and distributed routers to have to localnet ports
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Tim Rozet <trozet>
Component: OVNAssignee: OVN Team <ovnteam>
Status: NEW --- QA Contact: Jianlin Shi <jishi>
Severity: medium Docs Contact:
Priority: medium    
Version: RHEL 8.0CC: ctrautma, mmichels
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Description Tim Rozet 2020-05-20 21:17:43 UTC 
Description of problem:
In order to connect gateway routers and distributed routers to a localnet today, we have to use a switch on every node. This switch has no reason to exist, except to provide a localnet port. This is a request to remove that restriction and allow routers to directly attach to a localnet. Today's topology:

OVN distributed router----join switch---gateway router----external switch--localnet

Desired topology
OVN distributed router----join switch---gateway router-----localnet

This will remove the need to have an external switch per node, reducing the potentially thousands of useless logical switches configured in our topology, which will reduce overhead and make things clearer topology wise.