Re: Is there a methodical way to check full reachability?

Here is my method for this: Obviously you are going to write a TCL
script and paste it into all devices. It will look something like
this:

tclsh
foreach ccie {
1.1.1.1
2.2.2.2
3.3.3.3
4.4.4.4
5.5.5.5
6.6.6.6
} { ping $ccie re 2 so lo0}

Now...as far as what addresses to put into that script, I like to
start at the upper left side of my diagram and just put in every
SINGLE IP address I have in my network...every interface. Run your
script on every router and you are good! If you don't know TCL for
this purpose, you need to learn it!!!!! : )

On Thu, Jan 21, 2010 at 9:24 AM, <groupstudy_at_nyms.net> wrote:
> Guys,
> I always have trouble when I get asked to "check reachability in the enterprise network". To me, this implies I have to check every node can reach every over node on the network. Having to note down the contents of the routing table on each device and comparing them all manually to see if anythings missing, let alone ensuring reachability to each node on each network is a mammoth task! Is there some quick methodical process to do this without getting overwhelmed? I'd like to hear how people achieve this very important task.
> Thanks in advance!
> Joe
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- 
Regards,
Joe Astorino CCIE #24347 (R&S)
Sr. Technical Instructor - IPexpert
Mailto: jastorino_at_ipexpert.com
Telephone: +1.810.326.1444
Live Assistance, Please visit: www.ipexpert.com/chat
eFax: +1.810.454.0130
IPexpert is a premier provider of Classroom and Self-Study Cisco CCNA
(R&S, Voice & Security), CCNP, CCVP, CCSP and CCIE (R&S, Voice,
Security & Service Provider) Certification Training with locations
throughout the United States, Europe and Australia. Be sure to check
out our online communities at www.ipexpert.com/communities and our
public website at www.ipexpert.com
Blogs and organic groups at http://www.ccie.net