[ovs-discuss] [ovn] gateway router vs. distributed gateway port

Tony Liu tonyliu0592 at hotmail.com
Thu Sep 24 17:07:40 UTC 2020


Hi,

Given "Distributed Gateway Ports" in [1], and my test,
central SNAT, central FIP and distributed FIP are all supported by
distributed gateway port.

I wonder in which case gateway router has to be used? 

One case is mentioned in [2], DR is used in K8S to support node
service and avoid central SNAT. But the comments in [3] suggesting
LB is supported by DGP and distributed SNAT is also possibly supported
by DGP.

Other that the above case, any other cases really required DR?

[1] http://www.openvswitch.org/support/dist-docs/ovn-architecture.7.html
[2] https://www.mail-archive.com/ovs-discuss@openvswitch.org/msg06989.html
[3] https://www.mail-archive.com/ovs-discuss@openvswitch.org/msg06993.html

Thanks!
Tony



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