From: Carlos G Mendioroz (tron@huapi.ba.ar)
Date: Tue Aug 21 2007 - 08:32:34 ART
I did not mean to imply that you had to be a programmer to use simple
TCL. But if you are, TCL can do a lot more for you.
You are right in that you are not testing BB's views.
I don't agree in that not using TCL promotes failure. You just have to
use whatever you feel at ease with.
"Brute force pinging" is kind of a black box testing. When I'm doing
things, I like white box testing better...
-Carlos
darth router @ 21/08/2007 08:07 -0300 dixit:
> Carlos,
>
> the prob is you can have all the routes and not be able to ping devices, due
> to them not having routes back to you (backbones) or security features
> blocking packets. The TCL scripts you need to test in the lab are simple.
> You do not need to be a programmer. You do a show ip alias on every device,
> hold down ALT (CRT feature), select the routes, paste into a text file. It
> takes about 60 seconds to complete the scripts and grab all the IPs. You
> also need to use the TCL scripts several times in your lab to assure you
> have not broken anything throughout the day. Not using TCL in the lab
> significantly increases your chances of missing something, and ultimately
> promoting your failure.
>
>
> DR
>
> On 8/21/07, Carlos G Mendioroz <tron@huapi.ba.ar> wrote:
>> TCL may be a great tool to use if you have a complicated lab
>> and you have a programing background.
>> Last time I thought about it, it sounded more reasonable to check if all
>> routers had all info they need (i.e. routes) than to ping from every
>> place to every place. And you can actually do that from the confort of a
>> single CLI session.
>> You make a list of all networks that make up your lab (net and mask)
>> and go check (using rsh) every router's RIB for them (using show ip
>> route <net> <mask> and parsing the output).
>> Then you make a list of all routers you have and do a couple of nested
>> for. You only print out what's missing.
>> There's a gotcha. It takes time to program this, some 5 - 10 minutes.
>> But again, if you get a difficult IGP... this and debug ip routing
>> (to catch any instabilities) can help you out.
>> -Carlos
>>
>> Djerk Geurts @ 19/08/2007 16:26 -0300 dixit:
>>> Some other examples, I coded one a year ago which can be used as a
>>> custom command from cli. It will ping a given IP using all available
>>> local addresses:
>>>
>>> http://www.djerk.nl/wordpress/ccie-rs/things-to-know-lab/tcl/
>>>
>>> Djerk
>>>
>>>> -----Original Message-----
>>>> From: dayody@googlemail.com [mailto:dayody@googlemail.com] On
>>>> Behalf Of dayo@ademuyiwa.com
>>>> Sent: zondag 19 augustus 2007 21:04
>>>> To: Djerk Geurts
>>>> Cc: ccielab@groupstudy.com
>>>> Subject: TCL Script for R&S lab
>>>>
>>>> Hi Guys,
>>>>
>>>> Looking for away to write a tcl script for IGP and BGP
>>>> testing in the R & S exam. Any help will be appreciated
>>>>
>>>> Thanks
>>>>
>>>>
>>>> On 8/19/07, Djerk Geurts <djerk.geurts@nl.easynet.net> wrote:
>>>>
>>>> I don't seem to be able to send to the list anymore...
>>>> (does this arrive?)
>>>>
>>>> Now from the correct account.
>>>>
>>>> Regards,
>>>>
>>>> --
>>>> Djerk
>>>>
>>>>
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>> --
>> Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
>>
>> _______________________________________________________________________
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>
> _______________________________________________________________________
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-- Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
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