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https://issues.apache.org/jira/browse/DISPATCH-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053617#comment-17053617
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ASF GitHub Bot commented on DISPATCH-1582:
------------------------------------------

ted-ross commented on pull request #697: DISPATCH-1582 - Ignore router control 
message with version greater th…
URL: https://github.com/apache/qpid-dispatch/pull/697
 
 
   …an the local version.  Raise warning logs the first time we hear from a new 
router.
 
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> Prepare Routing Protocol for Backward Compatibility
> ---------------------------------------------------
>
>                 Key: DISPATCH-1582
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-1582
>             Project: Qpid Dispatch
>          Issue Type: Improvement
>          Components: Routing Engine
>            Reporter: Ted Ross
>            Assignee: Ted Ross
>            Priority: Minor
>             Fix For: 1.11.0
>
>
> In anticipation of moving to routing protocol version 2 (we're currently on 
> 1), there are a few changes needed to make it easy for version 2 to be 
> backward compatible to version 1.  This Jira will track those changes.
> The proposed change is to ensure that a version 1 router ignores version >1 
> messages, issuing a low-volume warning log when one is received.  This way, a 
> version 2 router can send both versions or send targeted versions based on 
> its knowledge of peer routers protocol versions.



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