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<font face="Times New Roman, Times, serif">RIPE IPv6 Folks:</font>
<div><font face="Times New Roman, Times, serif"><br>
Philip Matthews and I are co-authors on an active draft within
the IETF related to IPv6 routing design choices. To ensure we
are gathering sufficient data we are looking for an expanded set
of input from operator forums as well (vs. just the v6ops IETF
list). The draft is found here -<span class="Apple-style-span"
style="font-size: 15px;"> (<a
href="https://tools.ietf.org/html/draft-ietf-v6ops-design-choices">https://tools.ietf.org/html/draft-ietf-v6ops-design-choices</a>).
<br>
</span></font></div>
<div><font face="Times New Roman, Times, serif"><span
class="Apple-style-span" style="font-size: 15px;"><br>
</span></font></div>
<font face="Times New Roman, Times, serif"><span
class="Apple-style-span" style="font-size: 15px;">We are looking
for information on the IGP combinations people are running in
their dual-stack networks. We are gathering this information so
we can document in our draft which IGP choices are known to work
well (i.e., people actually run this combination in production
networks without issues). The draft will not name names, but
just discuss things in aggregate: for example, "there are 3
large and 2 small production networks that run OSPF for IPv4 and
IS-IS for IPv6, thus that combination is judged to work well".</span><span
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<div> </div>
<div>If you have a production dual-stack network, then we
would like to know which IGP you use to route IPv4 and
which you use to route IPv6. We would also like to know
roughly how many routers are running this combination.
Feel free to share any successes or concerns with the
combination as well. </div>
<div> </div>
<div>We are looking particularly at combinations of the
following IGPs: IS-IS, OSPFv2, OSPFv3, EIGRP.</div>
<div>If you run something else (RIP?) then we would also
like to hear about this, though we will likely document
these differently. [We suspect you run RIP/RIPng only at
the edge for special situations, but feel free to
correct us].</div>
<div><br>
</div>
<div>And if you have one of those modern networks that
carries dual-stack customer traffic in a L3VPN or
similar and thus don’t need a dual-stacked core, then
please email us and brag ...</div>
<div><br>
If you are on multiple lists at RIPE, NANOG or the IETF,
we apologize for any redundant emails you may get (we
are just attempting to reach the widest audience
possible).<br>
<br>
</div>
<div>Philip Matthews</div>
<div>Victor Kuarsingh</div>
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