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<p class=MsoNormal>Here we go again&#8230;.<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>I have two sites named HQ and colo.&nbsp; HQ is on the right,
colo is on the left.&nbsp; The HQ site has two LANS; 175.10.0.0/16 and
175.7.0.0/16.&nbsp;&nbsp; The colo site also has two LANS, 175.8.0.0/16 and
175.9.0.0/16.&nbsp; To simplify the tunnel setup, I supernetted the colo site,
so now it&#8217;s 175.8.0.0/15.&nbsp; <o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>So by my count, I need 2 tunnels:<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Colo-hqmain<o:p></o:p></p>

<p class=MsoNormal>Colo-hqmirror<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Colo-hqmain generally comes up and works reliably.&nbsp;
Colo-hqmirror has problems.&nbsp; Sometimes both tunnels will come up, other times
one or the other works.&nbsp; Sometimes after 10-15 minutes, they will both come
up with each other.&nbsp; <o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>I tested all this in a simulated environment and naturally
it worked well here.&nbsp; Of course, now it&#8217;s flakey in
production.&nbsp; The HQ site is using Openswan 2.6.25 with Fedora 12.&nbsp;
The colo site is older and uses Openswan 2.4.4 with Fedora Core 5.&nbsp; <o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Why two tunnels to the same sites?&nbsp; Well, some
Storagetek devices that mirror each other need NICs in different subnets.<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Here are some more bizarre symptoms.&nbsp; All colo subnets
can ping all HQ subnets.&nbsp; However, only some subnets from HQ can ping some
colo subnets, and this seems to change with the passage of time.&nbsp; For example,
a few minutes ago, the 175.10 subnet could ping everything in the colo site.
But when the 175.7 subnet tried to ping anything in the colo site, the pings
returned &#8220;Operation not permitted&#8221;.&nbsp; &nbsp;Now 175.10 can ping
175.8 and 175.7 can ping 175.9. &nbsp;But 175.7 cannot ping 175.8 and a 175.10
cannot ping 175.9.&nbsp; That&#8217;s from the HQ site. &nbsp;When pings come
from the colo site, all pings work.&nbsp; Try keeping that straight.&nbsp; <o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>One more complicating factor.&nbsp; The HQ site has 2 nodes
that act together in an active/standby pair.&nbsp; Both nodes have identical
configurations right down to the MAC Addresses on all the NICs.&nbsp;&nbsp; I
ran through several failovers in my testing here and all worked fine.&nbsp; I
used the real HQ nodes and a simulated Internet and simulated colo site.&nbsp; But
now in production, this flakey behavior shows itself.&nbsp; <o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>I guess maybe I&#8217;ll try to build an openswan-2.6.25
from the .tar file on the colo site and maybe it will behave a little
better.&nbsp; Any other thoughts?<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Thanks<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Greg Scott<o:p></o:p></p>

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