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https://issues.apache.org/jira/browse/CLOUDSTACK-764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13859537#comment-13859537
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Karl Harris commented on CLOUDSTACK-764:
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Me and my colleagues have been tasked by my company, Sungard, to implement and 
test the functionality of this JIRA.

Myself and several of my colleagues at Sungard have done some preliminary work 
and I will outline what we've found and several questions we have.

We will certainly have more questions/comments, but this is a good start.

Please comment, correct or add to the statements and questions below:


We have referenced:

        1.      About RvR

http://blogs.clogeny.com/understanding-the-redundant-virtual-router-in-citrix-cloudplatform/
        2.      Cloudstack function spec for RvR

https://cwiki.apache.org/confluence/display/CLOUDSTACK/Redundant+Virtual+Router+Functional+Spec
        3.      Cloudstack function spec for new VPC features

https://cwiki.apache.org/confluence/display/CLOUDSTACK/nTier+Apps+2.0+Functional+Spec
        4.      Implemented codes for RvR
Mostly it's in 
VirtualNetworkApplianceManagerImpl, as well as redundant_router directory of 
systemvm and in cloud-early-setup.



What we  know:

# Redundant Virtual Routers (RvR's) are used in CloudStack public clouds per 
item 4 above.
# These routers are provisioned with the templates contained in 
redundant_router directory of systemvm.
# Keepalived and Conntrackd do most of the "heavy lifting" monitoring and 
transitioning the current RvR's in public clouds.
# Keepalived and Contrackd are setup with templates by systemvm.
# The setup_router script calls the setup_redundant_router to provision a 
redundant router pair for a vm.

Questions:

# Are there any other references which might be helpful?
# It seems the VirtualNetworkApplianceManagerImpl and associated classes should 
be useable for vpcRvR's any gotcha's we should know about?
# Can setting up a redundant router pair for a vpc be done by simply adding a 
call to setup_redundant_router script in the setup_vpcrouter routine for each 
vpcRouter marked as redundant?


> nTier Apps 2.0 : Redundant Virtual Router for VPC
> -------------------------------------------------
>
>                 Key: CLOUDSTACK-764
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-764
>             Project: CloudStack
>          Issue Type: New Feature
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>            Reporter: Kishan Kavala
>
> This item is a sub task (2.17) of 
> https://issues.apache.org/jira/browse/CLOUDSTACK-621 



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