Re: Brainstorming acceptance issues - WAN impediment

[Hugo Slabbert <hugo () slabnet com>]

On Tue 2017-Feb-07 16:56:55 +0100, Antonio Ojea Garcia <aojea () hotmail com> wrote:

> 2017-02-06 20:10 GMT+01:00 Kasper Adel <karim.adel () gmail com>:
>
> > Hi,
> >
> > I am in the process of testing an 'automation/sdn' kind of controller, it
> > will be managing configuration on our routers and also deploying some VNFs
> > too.
> >
> > Before accepting it, i'd like to perform some testing, to make sure of the
> > behavior if there are network issues between the controller and the devices
> > (routers or servers), during creation of services.
> >
> > From the top of my head, I can think of the basic tests like introducing
> > jitter and delay but i would appreciate more ideas or even test cases that
> > i can re-use.
> >
> > Thanks
> Hi,
>
> For sure you need to check failover scenarios, reboot the controller or
> isolate it during some time.

- Traffic getting blackholed in one direction or the other (e.g. not 
  something obvious like links down or ICMP unreachables)

- "fun" things like MTU issues resulting in some traffic getting through 
  but not all

- Are there redundant controllers?  Can they get split-brained?

--
Hugo Slabbert       | email, xmpp/jabber: hugo () slabnet com
pgp key: B178313E   | also on Signal

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