Re: RIPv2 Vs EIGRP Autosummarization

Oh dear Lordy ... my son was playing hungry sharks tonight on my phone.

He must have sent this ...

Narbik - I think he is anxiously awaiting your next wb.

;-)

Andrew

.
On Mon, Mar 7, 2011 at 8:25 PM, ALL From_NJ <all.from.nj_at_gmail.com> wrote:

> Lz
> Okuie.sl
> ZlklsooslskdkzE:jczzE:zzzsdklisdjk
>
> On Mar 7, 2011 11:46 AM, "Narbik Kocharians" <narbikk_at_gmail.com> wrote:
> > I wish i had access to a rack of routers, but this is how it works, and
> > please lab it up and see it for your self:
> >
> > R1 (F0/0 - 10.1.12.1 /24) --------------------------------------- (F0/0 -
> > 10.1.12.2 /24) R2 (F0/1 - 10.1.23.2 /24)
> > ------------------------------------------------ (F0/1 - 10.1.23.3 /24)
> R3
> >
> > So what you should do is the following:
> > Create a loopback 0 interface on R3, and assign an ip addr of 3.3.3.3
> /24--
> > Advertise it in RIPv2
> > Create a loopback 0 interface on R2, and assign an ip addr of 2.2.2.2
> /24--
> > advertise it in RIPv2
> > On R2, create a loopback 99 and assign an ip addr of 99.9.9.9 /24 and
> > redistribute connected
> >
> > So this is what it should look like:
> >
> > On R1
> > router rip
> > ver 2
> > netw 10.0.0.0
> >
> > On R2
> > router rip
> > ver 2
> > netw 10.0.0.0
> > netw 2.0.0.0
> > redistri connected route-map 99 metric 1
> >
> > route-map 99
> > matc inter lo99
> >
> > On R3
> > router rip
> > netw 10.0.0.0
> > netw 3.0.0.0
> > ver 2
> >
> > On R1
> > you should see the following:
> > 2.0.0.0 /8
> > 3.0.0.0 /8
> > 99.0.0.0 /8
> > 10.1.23.0 /24 ----- because this subnet is contiguous.
> >
> > Now....On R3
> > router rip
> > no au
> >
> > The above change in R3's configuration will not make a difference,
> because
> > R2 will summarize it to 3.0.0.0 /8.
> >
> > If you change the configuration to eigrp, things should look a little
> > better:
> >
> > On R1
> > router eigrp 100
> > netw 10.1.12.1 0.0.0.0
> >
> > On R2
> > router eigrp 100
> > netw 10.1.12.2 0.0.0.0
> > netw 10.1.23.2 0.0.0.0
> > redistr connected route-map 99 metric 1 1 1 1 1
> >
> > route-map 99
> > match int lo99
> >
> > On R3
> > router eigrp 100
> > netw 3.3.3.3 0.0.0.0
> > netw 10.1.23.3 0.0.0.0
> >
> > You should see the following on R1:
> > 2.0.0.0 /8
> > 3.0.0.0 /8
> > 99.9.9.0 /24 ---- Unlike RIPv2, Eigrp does not summarize the
> redistributed
> > routes.
> > 10.1.23.0 /24
> >
> > NOW....Let's go to R3 and do the following:
> >
> > On R3
> > router eigrp 100
> > no au
> >
> > On R1 you should see the following:
> > 2.0.0.0 /8
> > 99.9.9.0 /24
> > 3.3.3.0 /24 --- So you see eigrp will not summarize what's advertised to
> it
> > in this case, whereas, Ripv2 will.
> > 10.1.23.0 /24
> >
> >
> >
> > I hope this helped.
> >
> >
> >
> >
> > On Mon, Mar 7, 2011 at 3:22 AM, hady tannous <hadytannous_at_hotmail.com
> >wrote:
> >
> >> Hi Nabrik,
> >>
> >> Forget about my previous mail.
> >>
> >> It doesn't make much sense technically since that network will be
> >> participating in RIP and wouldn't need redistribution
> >>
> >> Back to the original question :
> >>
> >> 1- What's the difference between autosummarization on RIPv2 and EIGRP in
> >> case we are crossing major network or in the caseof the same major
> network
> >> but different subnet masks like the one below
> >>
> >>
> >> LAN 1 <----------> R1 <----- serial -----> R2 <----- serial -----> R3
> >> 10.10.10.1/24 10.0.12.0/30 10.0.23.0/30
> >>
> >>
> >>
> >> TIA
> >>
> >> ------------------------------
> >> From: hadytannous_at_hotmail.com
> >> To: narbikk_at_gmail.com
> >>
> >> CC: aaron1_at_gvtc.com; ccielab_at_groupstudy.com
> >> Subject: RE: RIPv2 Vs EIGRP Autosummarization
> >> Date: Mon, 7 Mar 2011 10:50:28 +0000
> >>
> >>
> >> Hi Nabrik,
> >>
> >> Is that while crossing major networks or the same major network but
> >> different subnet masks length
> >>
> >> let's say i have the following topology :
> >>
> >> LAN 1 <----------> R1 <----- serial -----> R2 <----- serial -----> R3
> >> 10.10.10.1/24 10.0.12.0/30 10.0.23.0/30
> >>
> >>
> >>
> >>
> >>
> >>
> >> If i redistribute connected on R1 into RIP. How will R3 see the routes ?
> >>
> >> Thx
> >>
> >> > Date: Sun, 6 Mar 2011 23:18:44 -0800
> >> > Subject: Re: RIPv2 Vs EIGRP Autosummarization
> >> > From: narbikk_at_gmail.com
> >> > To: hadytannous_at_hotmail.com
> >> > CC: aaron1_at_gvtc.com; ccielab_at_groupstudy.com
> >> >
> >> > Just to add to whats been said.
> >> > RIPv2 (With auto summary) will summarize the redistributed routes to
> >> their
> >> > major network boundary, whereas, Eigrp (With Auto summary) will NOT do
> >> that.
> >> >
> >> > That's if i am reading your question correcly.
> >> > On Sun, Mar 6, 2011 at 10:48 PM, hady tannous <
> hadytannous_at_hotmail.com
> >> >wrote:
> >> >
> >> > > Thx Aaron
> >> > >
> >> > >
> >> > > Does RIPv2 summarizes accross discontiguous subnet masks ?
> >> > >
> >> > >
> >> > > TIA
> >> > >
> >> > > > CC: ccielab_at_groupstudy.com
> >> > > > From: aaron1_at_gvtc.com
> >> > > > Subject: Re: RIPv2 Vs EIGRP Autosummarization
> >> > > > Date: Sun, 6 Mar 2011 21:00:47 -0600
> >> > > > To: hadytannous_at_hotmail.com
> >> > > >
> >> > > > One thing I know is eigrp installs summary route to null0; I don't
> >> think
> >> > > ripv2 does that.... AD difference I think is 5 and 120
> >> > > >
> >> > > > Aaron
> >> > > >
> >> > > > On Mar 6, 2011, at 2:57 AM, hady tannous <hadytannous_at_hotmail.com
> >
> >> > > wrote:
> >> > > >
> >> > > > > Hi,
> >> > > > >
> >> > > > >
> >> > > > > What's the difference between RIPv2 Vs EIGRP Autosummarization ?
> >> > > > >
> >> > > > >
> >> > > > >
> >> > > > > TIA
> >> > > > >
> >> > > > >
> >> > > > > Blogs and organic groups at http://www.ccie.net
> >> > > > >
> >> > > > >
> >> _______________________________________________________________________
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> _______________________________________________________________________
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> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> >
> >> >
> >> > --
> >> > *Narbik Kocharians
> >> > *CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> >> > www.MicronicsTraining.com <http://www.micronicstraining.com/> <
> >> http://www.micronicstraining.com/>
> >> > Sr. Technical Instructor
> >> > *Ask about our FREE Lab Voucher with our Boot Camps*
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> _______________________________________________________________________
> >> > Subscription information may be found at:
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> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> > --
> > *Narbik Kocharians
> > *CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> > www.MicronicsTraining.com <http://www.micronicstraining.com/>
> > Sr. Technical Instructor
> > *Ask about our FREE Lab Voucher with our Boot Camps*
> > YES! We take Cisco Learning Credits!
> > Training & Remote Racks available
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
>

--
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net