Re: [OSPF] New Version Notification for draft-bryant-rtgwg-param-sync-01.txt

Stewart Bryant <> Mon, 27 February 2017 17:21 UTC

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From: Stewart Bryant <>
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Date: Mon, 27 Feb 2017 17:20:51 +0000
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Subject: Re: [OSPF] New Version Notification for draft-bryant-rtgwg-param-sync-01.txt
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Following discussion at the last IETF, I have made a number
of changes to the text to emphasis that this protocols
is only to be used for the synchronization of parameters needs
by the routing system.

As agreed at the RTGWG meeting I am notifying RTGWG, ISIS and OSPF WGs.

The draft can be found here:


The following is a summary of the changed:

I have changed the title to:

Synchronisation of Routing Parameters


I have added in the introduction:

Note that this protocol is only intended to be used for the propagation of
parameters needed to support the operation of the routing system. It 
be used as a general purpose parameter exchange protocol, and in 
particular it
MUST NOT be used as a parameter negotiation protocol, since such use may
degrade the ability of the underlying link-state routing protocol to 
carry our
its essential purpose.


I have changed the IANA text to say:

Synchronisation of Routing Parameters


I have added to the security section:

In specifying a new parameter, consideration must be given
to the impact of the additional parameter, and in particular the
rate of change of that parameter, on the dynamics of the link-state
routing protocol in use. In the specific case of the
Convergence Timer, the amount of data being carried and the
rate of change of the parameter value will have a negligible
impact on the link-state routing protocol in use.


Incorporated a number of review suggestions by Mohamed Boucadair (Mod)


Such consistency may be ensured by deploying automated
means such as enforcing the new value by invoking the
management interface of all involved routers. For example,
a central management entity may be responsible for
communicating the new configuration value by means of
vendor-specific CLI, NETCONF, etc. This approach may be
attracting if all involved nodes expose technology-agnostic
and vendor-independent interfaces to tweak a given network-wide
configuration parameter.


I would like to propose that we move this forward to become a WG draft
and refine the detail under the WG process.

- Stewart