From: Narbik Kocharians (narbikk@gmail.com)
Date: Fri Dec 29 2006 - 14:15:50 ART
Here I have R1 (131.1.12.1/24) connecting to R2 (131.1.12.2/24)via their
F0/0 and these routers are in area 1.
R2 (131.1.23.2/24) and R3 (131.1.23.3/24) are connected to each other via
their F0/1 interface and these routers are in area 0.
R3 (131.1.34.3/24) and R4 (131.1.34.4/24) are connected to each other via
their F0/0 interface and these routers are in Area 2.
Based on this topology R2 is the ABR connecting area 1 to area 0.
R3 is also an ABR connecting area 2 to area 0.
R4#sh run | b router
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
default-information originate always
R3#sh ip route ospf
O IA 1.0.0.0/8 [110/3] via 131.1.23.2, 00:01:33, FastEthernet0/1
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/2] via 131.1.23.2, 00:02:43, FastEthernet0/1
O 4.0.0.0/8 [110/2] via 131.1.34.4, 00:01:33, FastEthernet0/0
131.1.0.0/24 is subnetted, 3 subnets
O IA 131.1.12.0 [110/2] via 131.1.23.2, 00:01:33, FastEthernet0/1
O*E2 0.0.0.0/0 [110/1] via 131.1.34.4, 00:01:33, FastEthernet0/0
R3#show ip ospf border-routers
OSPF Process 1 internal Routing Table
Codes: i - Intra-area route, I - Inter-area route
i 4.4.4.4 [1] via 131.1.34.4, FastEthernet0/0, ASBR, Area 2, SPF 6
i 2.2.2.2 [1] via 131.1.23.2, FastEthernet0/1, ABR, Area 0, SPF 10
On 12/29/06, Narbik Kocharians <narbikk@gmail.com> wrote:
>
> What is the scenario?
>
> On 12/29/06, Ali Sheeraz Mehdi <ali.mehdi@atosorigin-me.com> wrote:
> >
> > I already have an ASBR and have to originate a default route in my
> > scenario and ABR is not ASBR here. I have tried default-information
> > originate always on ASBR but it is not working as well. I have also tried ip
> > route 0.0.0.0/0 and redistribute static even then it is not generating a
> > default route.
> >
> >
> >
> > Regards
> >
> > Ali
> >
> >
> > ------------------------------
> >
> > *From:* Narbik Kocharians [mailto: narbikk@gmail.com]
> > *Sent:* Friday, December 29, 2006 8:41 PM
> > *To:* ali.mehdi@atosorigin-me.com
> > *Cc:* ccie anees; nagendra kumar; ccielab@groupstudy.com
> > *Subject:* Re: NSSA - default-information-originate
> >
> >
> >
> > If the ASBR is also the ABR you could do "area xx nssa
> > default-information" but if it is not, then when a router injects a default
> > route its considered to be an ASBR.
> >
> > On 12/29/06, *Ali Sheeraz Mehdi* < ali.mehdi@atosorigin-me.com> wrote:
> >
> > Should I use default-information originate always or area X nssa
> > default-information originate; which one should work?
> >
> >
> >
> > Regards
> >
> >
> > ------------------------------
> >
> > *From:* Narbik Kocharians [mailto: narbikk@gmail.com]
> > *Sent:* Friday, December 29, 2006 8:32 PM
> > *To:* Ali Sheeraz Mehdi
> > *Cc:* ccie anees; nagendra kumar; ccielab@groupstudy.com
> >
> >
> > *Subject:* Re: NSSA - default-information-originate
> >
> >
> >
> > Well the ASBR can also be the ABR, but if it is not, try
> > default-information that will work.
> >
> > On 12/29/06, *Ali Sheeraz Mehdi* < ali.mehdi@atosorigin-me.com> wrote:
> >
> > Anees,
> >
> >
> >
> > This is exactly what I have experienced in my lab. ASBR is not
> > generating
> > any default route.
> >
> >
> >
> > Any comments
> >
> >
> >
> > Regards
> >
> > Ali
> >
> >
> >
> > _____
> >
> > From: ccie anees [mailto:ccieanees@yahoo.com]
> > Sent: Friday, December 29, 2006 8:08 PM
> > To: nagendra kumar; Ali Sheeraz Mehdi; ccielab@groupstudy.com
> > Subject: Re: NSSA - default-information-originate
> >
> >
> >
> > Hi,
> >
> >
> >
> > I don't think ASBR in NSSA can generate Default route. the only command
> > applicable in the Intra area routers or ASBR in NSSA are area X nssa.
> >
> > All the area X nssa <options> are applicable in ABR NSSA router or ABR
> > and
> > ASBR NSSA router.
> >
> >
> >
> > This is what I see in the lab practice. Please correct me if I am wrong.
> >
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Anees.
> >
> >
> >
> >
> >
> > a kumar < nagendranainar@yahoo.co.in> wrote:
> >
> > HI Ali,
> > Yes. You can configure ASBR in NSSA to generate default route. You have
> > to
> > confiure the ABR as "area nssa" and in ASBR configure "area nssa
> > default-information-originate". By this you will get Inter-area routes
> > from
> > ABR into this NSSA area and a default router from ASBR.
> >
> > To suppress N2 within NSSA, you need to configure "area 2 nssa
> > no-redistribute default-information-originate" in ASBR.
> >
> > Regards,
> > Nagendra
> >
> > Ali Sheeraz Mehdi wrote: Hi Guys,
> >
> >
> >
> > Can ASBR in NSSA generate a default route (if ABR and ASBR are not the
> > same
> > routers); also can we suppress N2 routes within NSSA maintaining the
> > full
> > reachability?
> >
> >
> >
> >
> >
> > Regards
> >
> > Ali
> >
> > _______________________________________________________________________
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> >
> >
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> >
> >
> >
> > --
> > Narbik Kocharians
> > CCIE# 12410 (R&S, SP, Security)
> > CCSI# 30832
> > Network Learning, Inc. (CCIE class Instructor)
> > www.ccbootcamp.com (CCIE Training)
> >
> >
> >
> >
> > --
> > Narbik Kocharians
> > CCIE# 12410 (R&S, SP, Security)
> > CCSI# 30832
> > Network Learning, Inc. (CCIE class Instructor)
> > www.ccbootcamp.com (CCIE Training)
> >
>
>
>
> --
> Narbik Kocharians
> CCIE# 12410 (R&S, SP, Security)
> CCSI# 30832
> Network Learning, Inc. (CCIE class Instructor)
> www.ccbootcamp.com (CCIE Training)
>
-- Narbik Kocharians CCIE# 12410 (R&S, SP, Security) CCSI# 30832 Network Learning, Inc. (CCIE class Instructor) www.ccbootcamp.com (CCIE Training)
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