[prev in list] [next in list] [prev in thread] [next in thread] 

List:       ipng
Subject:    (IPng 1560) Re:  Strict source routes and "what is a neighbor?"
From:       dhaskin () BayNetworks ! com (Dimitry Haskin)
Date:       1996-03-15 18:44:17
[Download RAW message or body]

Matt,

My supposition is that the intend of strict source route is to prevent
visiting nodes that are not listed in the routing header.  Therefore, IMO,
if you can directly forward to the next listed hop, it is all right
to do so regardless of on-link prefixes.  I agree that use of "neighbor" word
in the related section of the rfc1883 is somewhat misleading given
the adopted IPv6 terminology.

Dimitry


> From major@marvin Fri Mar 15 17:26:25 1996
> X-Authentication-Warning: whydos.lkg.dec.com: Host localhost didn't use HELO protocol
> To: ipng@sunroof.Eng.Sun.COM
> Subject: (IPng 1559) Strict source routes and "what is a neighbor?"
> X-Mailer: exmh version 1.5omega 10/6/94
> Date: Fri, 15 Mar 1996 21:47:47 +0000
> From: Matt Thomas <matt@lkg.dec.com>
> Sender: owner-ipv6@marvin
> Content-Length: 1278
> 
> 
> Assume you receive a type 0 source route with the next hop being marked
> as a strict hop.  That's means the next hop must be neighbor, right?
> 
> What happens if that next-hop happens to be within a prefix from a routing
> advertisement which did not have a the on-link bit set (thereby forcing 
> you to forward to a router if you don't already have a neighbor cache entry)?
> Does source route succeed/fail depending on whether you have a neighbor cache
> entry or not?
> 
> Imagine you are on a NBMA network and you have a neighbor cache entry due to
> cut-through.  The same issue applies?
> 
> Is a strict source route be limited to neighbors in on-link prefixes
> or additionaly include entries in the neighbor cache??
> 
> 
> Matt Thomas                          Internet:   matt@lkg.dec.com
> IPv6 Kernel Grunt                    WWW URL:    http://ftp.dec.com/%7Ethomas/
> Digital Equipment Corporation        Disclaimer: This message reflects my
> Littleton, MA                                    own warped views, etc.
> 
> ------------------------------------------------------------------------------
> IETF IPng Mailing List		      FTP archive: ftp.parc.xerox.com/pub/ipng
> IPng Home Page:          	      http://playground.sun.com/ipng
> Direct all administrative requests to majordomo@sunroof.eng.sun.com
> 
------------------------------------------------------------------------------
IETF IPng Mailing List		      FTP archive: ftp.parc.xerox.com/pub/ipng
IPng Home Page:          	      http://playground.sun.com/ipng
Direct all administrative requests to majordomo@sunroof.eng.sun.com

[prev in list] [next in list] [prev in thread] [next in thread]