Nerea Toledo Gandarias wrote:
Hello,
I have installed the latest version of HIPL (1.0.4-5) running on
ubuntu 8.10 on two vmware virtual machines. Both virtual machines
have two ethernet interfaces configured, but eth0 is the only one
that it is up. That is, oops has eth0 3ffe::2/64 and crash has eth0
3ffe::1/64 configured.
I am testing handover with SSH connection and a video streaming. I
have installed the SSH server and the video server on oops, that will
act as a responder, and access to it from crash, which is the
initiator. I perfectly see the base exchange and the data transmision
ciphrated using ESP.
I have tested soft handover in two different ways:
1.- Introducing the following lines:
oops: sudo ifconfig eth1 up
oops: sudo ifconfig eth1 inet6 add 3ffe::3/64
oops: sudo ifconfig eth0 down
Hi,
This is a known "problem". I changed it some time ago, but it messed
up someones test environment so it was changed back.
This is what happens in the code:
Eth1 is upped and its address is added everything is fine and then
eth0 is downed and its address is removed as a response to netlink
RTM_DELADDR. Now the code counts the addresses on the eth0 interface
and notices that there is none and tries to 0-addr REAP.
Notice the problem ;)
Logically thinking what should happen:
When an address is removed from the interface it should be checked
that if it is the last address on the interface then look for other
interfaces if there is something we can use.
It is a simple fix, but as I said it was taken out because a test case
where there was an interface with Internet connectivity and one that
was only used for nfs. In that case the behavior was not what the
tester wanted it to be and the fix was reverted.
We have one guy who is working on a rewrite of the code on the
experiences we have had with the mobility parts of the code. This
problem is on the list also :)
2.- Using the script handover.sh (/hipl--main--2.6/test/demo/)
In both cases, the connection drops, and you are no longer connected
with the SSH server neither the video server. With the video
streaming it happens the same, the video gets 'frozen'. The routes
are well defined.
I find I little bit strange having a script (handover.sh) to automate
the handover process and have no results using it.
The script uses one interface and its just for testing purposes. Not
sure of its usefulness to others than me :D
Hope this helped you...
BR,
Samu
Is this possible? What am I doing wrong?
Any help will be appreciated.
Regards,
Nerea
