Re: CCIE Lab TIP: Parser Cache

So basically this is/is this how it works ;

I have the below configs on my router

interface Loopback0
 ip address 1.1.1.1 255.255.255.0
!
interface Loopback1
 ip address 2.0.0.4 255.255.255.255

i do sh run normally, it would gather information from all interfaces and
then display it. NOW i use the "parser config cache interface" command and
do show run again, it again takes a "longer time" but this time caches the
information . I do a sh run for a second time, the display information from
cache, is faster. Upto here its cool.

Cisco Doc says "
Each time the interface configuration of an interface changes, the interface
cache of the specified interface is flushed. The other interface data
remains cached as before. Entering an NVGEN-type command after modifying the
interface configuration will once again not show much evidence of
improvement until the next NVGEN-type command is entered."

so if i change ANYTHING on the configs, for example now my configs are as
below

interface Loopback0 ====== SAME
 ip address 1.1.1.1 255.255.255.0
!
interface Loopback1 ======= CHANGED
 ip address 100.100.100.100 255.255.255.255

*I do the show run again will it take the same amount of time as the initial
show run as the cache is flushed when configs are changed ?* If I have a 200
interfaces, i change the config on just one of em. Will it flush the whole
configs ( NOT, according to the cisco doc above" so why does it say
"Entering an NVGEN-type command after modifying the interface
configuration
will once again not show much evidence of improvement until the next
NVGEN-type command is entered."" ???

Regards
Ahmed

On Tue, Apr 26, 2011 at 6:44 PM, Darby Weaver <darby.weaver_at_gmail.com>wrote:

> I forgot to mention - everyone knows... I'm the slowest wheel on the
> road...
>
> http://www.darbyslogs.blogspot.com
>
> On Tue, Apr 26, 2011 at 10:36 AM, Darby Weaver <darby.weaver_at_gmail.com
> >wrote:
>
> > I was an earned my MCSE and complete in December of 1999...
> >
> > I was starting to think of Cisco and reading books that looked like
> > Egyption characters to me... Truly Greek.
> >
> > If it matters... I deploy multi-million dollar Cisco Solutions with a
> > process and sense of pride.
> >
> > :)
> >
> > I'll sit the lab when I'm ready for it.
> >
> > Going to the lab with scores in the 50's won't magically make anyone a
> CCIE
> > nor will it make you lucky...
> >
> > Been there and done that.
> >
> >
> >
> >
> >
> > On Tue, Apr 26, 2011 at 10:30 AM, Robert Hosford <
> > rhosford_at_certifiednets.com> wrote:
> >
> >> Dude,
> >>
> >> When are you going to sit the mext exam?
> >>
> >> Didn't you join GS back in '99?
> >>
> >> Robert
> >> ________________________________________
> >> From: nobody_at_groupstudy.com [nobody_at_groupstudy.com] on behalf of Darby
> >> Weaver [darby.weaver_at_gmail.com]
> >> Sent: Tuesday, April 26, 2011 10:09 AM
> >> To: ccie forum
> >> Subject: CCIE Lab TIP: Parser Cache
> >>
> >> parser cache config
> >>
> >> Performance Enhancement Configuration
> >>
> >>
> >>
> http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtinvgen.html
> >>
> >> --
> >> Darby Weaver
> >> Network Engineer
> >>
> >>
> >> darbyweaver_at_yahoo.com
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
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> >>
> >
> >
> >
> > --
> > Darby Weaver
> > Network Engineer
> >
> >
> > darbyweaver_at_yahoo.com
> >
>
>
>
> --
> Darby Weaver
> Network Engineer
>
>
> darbyweaver_at_yahoo.com
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
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Received on Tue Apr 26 2011 - 21:58:10 ART