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

Your customer routers will have routes but no reachability across the
MPLS. Try running anything other than point-to-multipoint OSPF in the
frame cloud as well.

On Fri, Jan 22, 2010 at 1:49 PM, Divin Mathew John <divinjohn_at_gmail.com> wrote:
> Wht will happen?
>
> On Sat, Jan 23, 2010 at 12:17 AM, Joe Astorino <jastorino_at_ipexpert.com>
> wrote:
>>
>> Indeed....using MPLS and having a broken LSP somewhere in the middle
>> can result in having routes but no reachability : ) Try running MPLS
>> L3 VPN with OSPF over frame-relay in your SP "core" and make your PE
>> loopbacks /24s and see what happens : )
>>
>> On Fri, Jan 22, 2010 at 1:18 PM, Divin Mathew John <divinjohn_at_gmail.com>
>> wrote:
>> > R1--- r2--- R3
>> > R1 thinks R2 is next hop for R3 Lo0. and R2 Thinks R1 is next hop for
>> > R3'
>> > Lo0
>> >
>> >
>> > On Fri, Jan 22, 2010 at 10:27 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>
>> > wrote:
>> >>
>> >> Would you please show a simple example where you have routes and
>> >> not reachability ? Obviously without ACLs blocking traffic.
>> >>
>> >> -Carlos
>> >>
>> >> Marko Milivojevic @ 22/01/2010 8:54 -0300 dixit:
>> >> > On Thu, Jan 21, 2010 at 23:51, Carlos G Mendioroz <tron_at_huapi.ba.ar>
>> >> > wrote:
>> >> >> Or you can use the thoughtfull (sp?) way of verifying that all your
>> >> >> networks have indeed routes in all your routers, and that you have
>> >> >> no routing (change) activity (i.e. debug routing).
>> >> >
>> >> > Having routes in the routing table does not mean reachability :-).
>> >> >
>> >> > Having pings working, doesn't mean full routing convergence :-).
>> >> >
>> >> > --
>> >> > Marko Milivojevic - CCIE #18427
>> >> > Senior Technical Instructor - IPexpert
>> >> >
>> >> > Mailto: markom_at_ipexpert.com
>> >> > Telephone: +1.810.326.1444
>> >> > Fax: +1.810.454.0130
>> >> > Community: http://www.ipexpert.com/communities
>> >>
>> >> --
>> >> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>> >>
>> >>
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>> >>
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>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> > --
>> >
>> > Sent from Bengaluru, Karnataka, India
>> >
>>
>>
>>
>> --
>> Regards,
>>
>> Joe Astorino CCIE #24347 (R&S)
>> Sr. Technical Instructor - IPexpert
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>> Live Assistance, Please visit: www.ipexpert.com/chat
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>
>
>
> --
>
> Sent from Bengaluru, Karnataka, India
>

-- 
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