GitLab

with views, to give different IPs fro boss and ops to internal hosts
than to external ones.

Needed for Wisconsin.

an interface route when bringing up the interface. To solve this, I don't
do the hostroute optimization (i.e. add the 1st host route as a net route
and add subsequent host routes only if they are different) for directly
connected neighbors.

Jail changes.

> > >is to collapse stuff like:
> > >
> > >         192.168.3          192.168.2.2        UGSc        0       12  veth6
> > >         192.168.3.2        192.168.2.2        UGHS        0        9  veth6
> > >         192.168.3.4        192.168.2.2        UGHS        0       12  veth6
> > >
> > >into the single net route.

Found the problem. My code took care of the case where the net route was
calculated first and if a host route came up for the same subnet with the
same hop, it would skip adding the host route. However, if the host route
were added first before the net route, it was a problem. To illustrate the
problem, the host route to 3.2 is added on FG1 when the net route was
calculated for node 'A' at 7.0 . At this point however, the net route for
3.0 hasn't been defined yet coz that'll come later in the route to dst
'AS1'. Experiment testbed/vroutetest.

The solution is to consider adding host routes only after all net routes
have been added to the DB. Changes to the code weren't trivial this time.
Also, when adding host routes, I add the first one as a net route. If
subsequent host routes have the same hop, they'll get skipped. Otherwise,
a host route with a longer prefix will take precedence. With all these
changes, the number of routes in testbed/vroutetest experiment came down
from 361 (> NxN) to 162 (< NxN) where NxN is 289 . Mike, let me know if
things are alright after rebooting vnodes in your experiment.

skipped.

----------------
    if ($optimize) {
	my $newip = inet_ntoa(inet_aton($dstip) & inet_aton($NETMASK));

	if (defined($netroutes{"$src:$newip"})) {
	    if ($netroutes{"$src:$newip"} ne $hop) {
		die("*** $0:\n".
		    "    network route mismatch: $src:$dst:$hop!\n");
	    }
	    next;
^^^^^^^^^^^^^^^^^^^^^^^^^^
	}

	$netroutes{"$src:$newip"} = $hop;
	$type  = "net";
	$dstip = $newip;
    }

HOSTROUTES:
----------------

If a NET route is already defined for a subnet because of a previous route
(to a different dst on the same LAN), it would skip doing the HOSTROUTES.
This problem wouldn't occur with links alone in the topology. Looks like
it was never caught because no one probably tried pinging IPs of all
interfaces while using LANs. Note that this problem wouldn't occur for
directly connected neighbors (even if they are on a LAN). The latter is
the reason why maryland folks didn't encounter this problem.

The bottomline: We need Dave (West)'s automated testing tool!

Fixed, committed and installed.

Mike, I have fixed the routes in your experiment. Just reboot your
nodes/vnodes.

-Shashi

On Fri, 15 Aug 2003, Mike Hibler wrote:

> I've know we have been round and round this one, but it appears that
> rtproto Static is not producing routes to all IP addrs listed in the
> hosts file.  Again, it is nodes with multiple interfaces and we don't
> have routes to the nodes on all of those interfaces.  I thought we came
> up with some solution (or at least hack) for this?
>
> You can see this in the testbed/vroutetest experiment by logging into
> say EGG1.vroutetest.testbed.emulab.net and trying to ping "F-3".
> Note that this is a vnode so you'll have to slogin from ops or, better,
> use the fine ssh-mime.pl thingee of Leigh's from the web page.
>
> Honestly, I tried going back to the mail archive to find last time this
> came up, but I didn't find anything useful!
>

it.

not linked to yet.

vserver node.  The process starts with rc.vinit, which is called
either by the service manager, the pnode boot, or by a vnode reboot.
rc.vinit calls vnodesetup, which calls rc.inplab, which calls
plabsetup.

iron out.  TMCD/libsetup now has a plabconfig commands that parallels
the jailconfig command.  The Plab boot process has been added to
libsetup and a -p option has been added to vnodesetup to parallel the
-j option.  Parts of the code that were Jail-specific, but labeled
just as vnode stuff have been renamed.  $vnodedir in vnodesetup has
been removed, since it was redunant with libsetup's CONFDIR, and
CONFDIR is much more intelligent.

dumb error with the return value.

dying while holding the VLAN edit buffer lock. Also, avoid uninit.
value warnings in some cases when we don't get a response from the
switch. Finally, add some more debugging information.

More changes on the way.

	set myixp [$ns node]
	set ixphost [$ns node]
	tb-set-hardware $myixp ixp-bveil
	tb-fix-node $myixp $ixphost
	tb-set-node-os $ixphost RHL-STD

This gives you a handle on the host node so you can treat it like a
normal testbed node, including setting the OSID.

There are associated assign_wrapper changes, but I won't check those
in till I get back from vacation; not enough people around this coming
week in case I screwed something up.

from SCI.

Hema Tahilramani Kaur, Shiv Kalyanaraman, Andreas Weiss, Shifalika Kanwar and Ayesha Gandhi.
BANANAS: An Evolutionary Framework for Explicit and Multipath Routing in the Internet
In Workshop on Future Directions in Network Architecture, August 2003. To Appear

Don't force thumbnail images to 128x128 now that we make them 160x160. In fact, don't force them to anything since we have some 160x160 now and some 128x128. Just let them be the right size.

Split the function that determines if a vnode can be mapped to a given pnode
out of find_pnode, so that I can spread it out and make it more comprehensible.
In doing so, fixed a bug in which static types were not getting handled
correctly - a static type would only be found if no vnodes with dynamic types
were allocated to the pnode.

Fixed a bug in which, on allocation of a dynamic ptype, nodes where being
removed from their static type lists in the type_table.

Fixed a bug when there is a combination of fixed and un-fixed vnodes in the top
file.

I have more on the way, but this seemed like a good checkpoint.