Re: TCL Script - reachability to BGP networks

While I don't know of any built-in commands that do this, I do know that
you can create custom spec files that will allow you to alter the show
commands to your liking (and possibly create new ones?)

I'm having a hard time finding documentation on them, hopefully someone
else has a tutorial. It may or may not be worth it to mess with that during
the lab, likely not.

http://www.cisco.com/en/US/docs/ios/netmgmt/command/reference/nm_14.html#wp1174271

Looks like if you knew the right field names, you could come up with a
command that would just spit out BGP prefixes and nothing else.

Keller Giacomarro
keller.g_at_gmail.com

On Mon, Dec 19, 2011 at 11:14 PM, Tom Kacprzynski <tom.kac_at_gmail.com> wrote:

> Keller,
> For me it's a lot easier to generate a tcl script than a macro, but you
> have a point, if you have to create a macro for a switch why not just use
> that for the routers.
>
> The TCL scrip i'm using is really simple, just to save me time:
>
> foreach i {
> 150.1.1.1
> 187.1.13.9
> } { ping $i re 2 timeout 1 }
>
> .. basically all i have to remember is:
>
> foreach i {
>
> } { ping $i }
>
> Either way if you use a tcl or a macro, how do you generate the IP
> addresses for the BGP advertised routes in a quick efficient matter?
>
> Thanks
>
> Tom
>
>
>
> On Mon, Dec 19, 2011 at 11:08 PM, Keller Giacomarro <keller.g_at_gmail.com>wrote:
>
>> On a somewhat related note, why does everyone advocate learning TCL for
>> the exam? I've been doing my studies with nothing but ping macros and find
>> it to be intuitive, easy to change, and fast to setup. Additionally, you
>> can use the same macros for both routers and switches.
>>
>> Is there an advantage to TCL for CCIE purposes that I'm missing?
>>
>> Keller Giacomarro
>> keller.g_at_gmail.com
>>
>>
>> On Mon, Dec 19, 2011 at 11:04 PM, Tom Kacprzynski <tom.kac_at_gmail.com>wrote:
>>
>>> Hello Everyone,
>>> I have a quick question. Trying to optimize how I generate the
>>> reachability
>>> tcl script for the lab (the quicker I can create the script the more time
>>> i'll have troubleshooting any issue). For directly connected networks
>>> it's
>>> pretty easy.. just do sh ip alias on each router:
>>>
>>> Rack1R2#sh ip alias
>>> Address Type IP Address Port
>>> Interface 150.1.2.2
>>> Interface 187.1.235.2
>>> Interface 204.12.1.2
>>>
>>> ...using alt and mouse selection, copy only the addresses into the tcl
>>> script.
>>>
>>> But what* I'm looking for* is a nice quick way to get all of the active
>>> bgp
>>>
>>> routes in a similar way without doing much formatting, such as duplicate
>>> or
>>> tabs or weird spaces.
>>>
>>> What does everyone else do to check advertised routes reachability? Is
>>> there a nice BGP command that could be used with regex or some show ip
>>> cef
>>> ... command.
>>>
>>> Thank you in advance for any help.
>>>
>>>
>>> Tom
>>>
>>>
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Received on Mon Dec 19 2011 - 23:48:33 ART