Famous operational issues
ahebert at pubnix.net
Wed Feb 24 13:16:14 UTC 2021
I personally did "disable vlan Xyz" instead of "delete vlan Xyz" on
Extreme Network... which proceeded to disable all the ports where the
VLAN was present...
Good thing it was a (local) remote pop and not on the core.
Alain Hebert ahebert at pubnix.net
50 boul. St-Charles
P.O. Box 26770 Beaconsfield, Quebec H9W 6G7
Tel: 514-990-5911 http://www.pubnix.net Fax: 514-990-9443
On 2/23/21 5:22 PM, Justin Streiner wrote:
> An interesting sub-thread to this could be:
> Have you ever unintentionally crashed a device by running a perfectly
> innocuous command?
> 1. Crashed a 6500/Sup2 by typing "show ip dhcp binding".
> 2. "clear interface XXX" on a Nexus 7K triggered a
> cascading/undocument Sev1 bug that caused two linecards to crash and
> reload, and take down about two dozen buildings on campus at the .edu
> where I used to work.
> 3. For those that ever had the misfortune of using early versions of
> the "bcc" command shell* on Bay Networks routers, which was intended
> to make the CLI make look and feel more like a Cisco router, you have
> my condolences. One would reasonably expect "delete ?" to respond
> with a list of valid arguments for that command. Instead, it deleted,
> well... everything, and prompted an on-site restore/reboot.
> BCC originally stood for "Bay Command Console", but we joked that it
> really stood for "Blatant Cisco Clone".
> On Tue, Feb 16, 2021 at 2:37 PM John Kristoff <jtk at dataplane.org
> <mailto:jtk at dataplane.org>> wrote:
> I'd like to start a thread about the most famous and widespread
> operational issues, outages or implementation incompatibilities you
> have seen.
> Which examples would make up your top three?
> To get things started, I'd suggest the AS 7007 event is perhaps the
> most notorious and likely to top many lists including mine. So if
> that is one for you I'm asking for just two more.
> I'm particularly interested in this as the first step in developing a
> future NANOG session. I'd be particularly interested in any issues
> that also identify key individuals that might still be around and
> interested in participating in a retrospective. I already have
> that is willing to talk about AS 7007, which shouldn't be hard to
> Thanks in advance for your suggestions,
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