[193611] in North American Network Operators' Group
Re: Brainstorming acceptance issues - WAN impediment
daemon@ATHENA.MIT.EDU (Hugo Slabbert)
Tue Feb 7 14:09:46 2017
X-Original-To: nanog@nanog.org
Date: Tue, 7 Feb 2017 11:09:41 -0800
From: Hugo Slabbert <hugo@slabnet.com>
To: Antonio Ojea Garcia <aojea@hotmail.com>
In-Reply-To: <CABhP=tY-9LRfpnUJK6W97DO801KVb0PhnZdrevQic0_C4SnmUg@mail.gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
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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 VN=
Fs
>> too.
>>
>> Before accepting it, i'd like to perform some testing, to make sure of t=
he
>> behavior if there are network issues between the controller and the devi=
ces
>> (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 th=
at
>> 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=20
something obvious like links down or ICMP unreachables)
- "fun" things like MTU issues resulting in some traffic getting through=20
but not all
- Are there redundant controllers? Can they get split-brained?
--=20
Hugo Slabbert | email, xmpp/jabber: hugo@slabnet.com
pgp key: B178313E | also on Signal
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