[LiSA-Users] vlan interfaces are generated with the same MAC addresses

[chicany]

Hi,

We're going to have a new development session with a team of younger
developers during the next 3 or 4 months. Although the effort will be
focused on the switching engine abstraction and porting lisa to other
platforms, I think it's a good opportunity to add this feature and I'm
going to propose and support it.

That's definitely a good news. In my opinion even nowadays when they're
more mature projects e.g http://openvswitch.org/  LiSA is still in a game
thanks to Cisco like CLI.
Having LiSA and Quagga installed on Microcore
http://distro.ibiblio.org/tinycorelinux/ Linux would be great but I was not
able to install LiSA. I know  that wiki is available
here<http://lisa.mindbit.ro/wiki/doku.php?id=building_packages>but
nevertheless I was not finally successful. I did it with openvswitch.

 I'm not complying knowing that LiSA is mostly diploma project and there is
not a huge developing team  behind it. I appreciate your work and wish you
good luck.

Here is what I wrote about LiSA:
http://brezular.wordpress.com/2010/09/25/lisa/

Have a nice weekend,

chicany




2013/3/2 Radu Rendec <radu.rendec at mindbit.ro>

> **
> On Sat, 2013-03-02 at 07:16 +0100, chicany wrote:
>
> 1.
>
>  Today I was able to change MAC address for VLAN interface. It works
> perfectly in both cases - when I load switch module with vif_mac parameter
> and also as when I add a line vif to /etc/modprobe.d/lisa.conf. Sorry for
> confusing you last time I don't really know when I made a mistake during my
> tests.
>
>
> Hi,
>
> Great to know that it's working for you. Please find my answers below.
>
>
>  2.
>
>  Seems that the last two hexa numebers are changed for vlan interface.
> For example, when vif_mac is 02:00:11:22:33:42 the MAC adress of VLAN
> interface30  is e.g. 02:00:11:22:33:6A. I'm ok with it but I have another
> question.  Cisco allows to change MAC address of particular interface under
> interface configuration. Would it be possible to implement this command at
> least for VLAN interfaces?
>
>
> Yes, for each vlan interface the kernel module performs a logical XOR
> between the configured vif_mac and the vlan ID. We implemented it this way
> 8 years ago during the initial development effort. Later, we realized that
> it made no sense, since vlans are completely isolated at layer 2 anyway and
> there is no risk in conflicting MAC address. However, we haven't found the
> time to fix this.
>
> I think the ability to change the MAC address from the interface config
> menu is a simple yet very useful feature. We're going to have a new
> development session with a team of younger developers during the next 3 or
> 4 months. Although the effort will be focused on the switching engine
> abstraction and porting lisa to other platforms, I think it's a good
> opportunity to add this feature and I'm going to propose and support it.
>
>
>  3.
>
>  I noticed even the ping and traceroute commands are available in the
> enabIe mode they are not working.  For instance:
>
> QEMU2#ping 192.168.1.2
>            ^
> % Invalid input detected at '^' marker.
>
> For this reason I must exit LiSA when everytime those commands are needed.
> Sorry, I should have brought this to a new topic but it is really annoying
> ;)
>
>
> I think this is also a nice feature and I know that quagga/zebra
> implements it at least with ping. I'll consider this as well for the
> upcoming development session. Thanks for all the good suggestions! It's
> really helpful for us to know what users actually need, so we can put the
> effort in the right direction.
>
> Have a nice weekend,
>
> Radu
>
>
>
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> http://lisa.mindbit.ro/mailman/listinfo/lisa-users
>
>
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