Open Stack

----- Original Message -----
> 
> 
> Hi,
> 
> My Name is Keshava who was talking about using IGP to learn VM prefix and
> advertise to have reachability within the cloud in the last Atlanta summit.
> 

Is there a document that could explain the use cases for something like this?

> Instead of running BGP below are the thoughts to use OSPF routing protocol
> which support hierarchical network design also.
> 
> Here are my thoughts about the same.
> 
> 
> 
> 1. OSPF will be running in each of the Nodes under that TOR/switch for a
> particular Area.
> 
> 2. Tennant VM prefix needs to added as static route
> 
> 3. Each of the Nodes will form adjacency with each other in that area.
> 
> a. If it is broadcast network then of the OSPF router will become ‘Designated
> router/DR’ on behalf all others in that area .
> 
> 4. L-1 switch/Nodes acting as Area-border router ( ABR) will connect to
> L2-switch which is Area-0.
> 
> This will help for
> 
> Route-aggregation,
> 
> Avoid flooding of routes if any Node is going down.
> 
> If any of the Node/Router is of higher/low capacity it is possible to say
> ‘forwarding option to other router’ for egress traffic.
> 
> 
> 
> Let us know peoples opinion about the same.
> 
> 
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> 
> Thanks & regards,
> 
> Keshava.A
> 
> 
> 
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