[LiSA-Devel] [GitHub] Install and run LISA using kernel rpm packages

[Radu Rendec]

On Wed, 2013-02-20 at 22:10 +0200, Andreea-Cristina Hodea wrote:
> Thank you so much Radu for the detailed response. I have managed to
> simulate the network above and the MAC addresses were learned properly
> for both eth2 and eth3. Though, I got the message "failed to enable
> cdp on interface eth2 : No such file or directory" for both
> interfaces. Is there something I've missed?

Don't worry about that message. It's because CDP support is implemented
as a daemon that needs to be started separately from the CLI. Then each
CLI instance tries to connect to the daemon and "inform" it that there
is a new interface that it needs to handle.

You can start the CDP daemon by running cdpd from userspace/cdpd before
running the CLI.

In the long run, this is something that we need to consider, because now
the CDP daemon uses AF_SWITCH sockets to be able to send and receive raw
packets on physical interfaces. With other switching engines (such as
linux bridge + 8021q) we need to find other ways of implementing the
same functionality and make it transparent to the CDP daemon (and any
other daemons that may need it, such as RSTP).

Radu