[AusNOG] Vlan Add - Was Re: Work experience in networking/telecoms/DCs? Getting my foot in the door?

Damien Gardner Jnr rendrag at rendrag.net
Wed Dec 24 13:32:33 EST 2014


It's funny, in all these years, i've never done a vlan xxx instead of vlan
add xxx, as I like to be explicit, so I've always done the copy, paste, add
,xxx to the vlan line.

That said, it was only yesterday that I did the firewall oops..  Took a
blank RB951 with us on holiday, arrived at the apartment, configged it up,
have it doing EoIP back to SY3, all was working GREAT.  And then i
disconnected the ethennet cable, jumped on Wifi, and went to connect back
in.  And yep, only had established and related rules on INPUT.  Start
again, d'oh.

And missed the where on an update/delete?  Yep, that can be VERY painful to
recover from!



On 24 December 2014 at 13:27, PRK <ausnog at digitaljunkie.net> wrote:

>  Is there anyone here who either:
>
> a) Hasn't done the vlan xxx instead of vlan add xxx?
>
> or
>
> b) Hasn't directly seen the vlan xxx instead of vlan add xxx done?
>
> Or, if you're more of a systems person, haven't locked yourself out of a
> server due to a firewall change, or directly seen someone else do so?
>
> Or, if you're a DBA, done an update to a database table and missed the
> where clause, overwriting every single record?
>
> I'd consider these fairly common errors that almost everyone makes, once,
> and a fantastic way to evaluate someone's response under pressure. They're
> also fantastic teachable moments (once resolved) as to why certain company
> processes and procedures exist.
>
> I'd probably be concerned if the same person made the same mistake more
> than once, though.
>
> prk.
>
>
> On 2014-12-23 20:48, Andy S. wrote:
>
> I just remember one of my mate told a story about one particular CCIE
> doing "switchport trunk allowed vlan xxx" instead of "switchport trunk
> allowed vlan add xxx" and caused an outage. Companies losing money
> (according to him. It's a stock trading company). Though it's weird they
> needed more time to address where the issue was.
>
>
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>
>


-- 

Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
 We ran to the sounds of thunder.
We danced among the lightning bolts,
 and tore the world asunder
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