also I would recommend you try debug mpls packets on every hop through the
way, so you can more easily see what the problem is in such cases.
Regards,
Serdar Kut
CCIE #18130 (R&S, SP)
On Tue, Oct 13, 2009 at 11:01 PM, Joe Astorino <jastorino_at_ipexpert.com>wrote:
> I'm glad you got it fixed. Another thing I have run into with MPLS L3 VPN
> and your IGP --> always make sure that your OSPF advertisements match your
> LDP advertisments i.e. if you have a /24 loopback and you are using it to
> peer via BGP make sure you do "ip ospf network point-to-point" to actually
> advertise the /24 and not the /32 into OSPF. Another thing is that if you
> are running MPLS over frame-relay make sure you are running
> point-to-multipoint OSPF
>
> On Tue, Oct 13, 2009 at 12:48 PM, JR Garcia <ttuner_at_gmail.com> wrote:
>
> > thanks guys. it worked after i hard set the Router ID's in OSPF and BGP.
> > rookie mistake. thanks for the help!
> >
> > On Tue, Oct 13, 2009 at 8:24 AM, Anantha Subramanian Natarajan <
> > anantha.natarajan_at_gravitant.com> wrote:
> >
> > > Hi J R Garcia,
> > >
> > > If your platform supports,in order for troubleshooting you may use
> the
> > > mpls traceroute feature similiar as below ,it may give some idea.
> > >
> > > router#traceroute mpls ipv4 10.250.16.250 255.255.255.255
> > > Tracing MPLS Label Switched Path to 10.250.16.250/32, timeout is 2
> > seconds
> > > Codes: '!' - success, 'Q' - request not transmitted,
> > > '.' - timeout, 'U' - unreachable,
> > > 'R' - downstream router but not target,
> > > 'M' - malformed request
> > > Type escape sequence to abort.
> > > 0 10.236.2.65 MRU 4474 [Labels: implicit-null Exp: 0]
> > > ! 1 10.236.2.66 14 ms
> > >
> > > Thanks
> > >
> > > Regards
> > > Anantha Subramanian Natarajan
> > >
> > > 2009/10/13 Antonio Soares <amsoares_at_netcabo.pt>
> > >
> > >> I would bet on CEF being disabled on the P router :)
> > >>
> > >>
> > >> Regards,
> > >>
> > >> Antonio Soares, CCIE #18473 (R&S)
> > >> amsoares_at_netcabo.pt
> > >>
> > >> -----Original Message-----
> > >> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of
> > >> Scott Morris
> > >> Sent: terga-feira, 13 de Outubro de 2009 1:10
> > >> To: JR Garcia
> > >> Cc: Nicolas Leiva; ccielab_at_groupstudy.com
> > >> Subject: Re: mpls vpn question
> > >>
> > >> Mmmmm... There's your issue. No label, no forwarding. :)
> > >>
> > >> Check your IGP. Routers use Lo0 by default as the RID. Do you have
> > >> reachability and is it over the interface you're using to
> > >> connect?
> > >>
> > >> You may need to look at transport discovery as well...
> > >>
> > >> But "show mpls ldp neighbor detail" may give you some more information
> > >> about what's not working well!
> > >>
> > >> Cheers,
> > >>
> > >>
> > >> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider)
> #4713,
> > >>
> > >> JNCIE-M #153, JNCIS-ER, CISSP, et al.
> > >>
> > >> JNCI-M, JNCI-ER
> > >>
> > >> evil_at_ine.com
> > >>
> > >>
> > >> Internetwork Expert, Inc.
> > >>
> > >> http://www.InternetworkExpert.com <http://www.internetworkexpert.com/
> >
> > >>
> > >> Toll Free: 877-224-8987
> > >>
> > >> Outside US: 775-826-4344
> > >>
> > >>
> > >> Knowledge is power.
> > >>
> > >> Power corrupts.
> > >>
> > >> Study hard and be Eeeeviiiil......
> > >>
> > >>
> > >> JR Garcia wrote:
> > >> > LDP is enabled. my P router has no entries in the LFIB, but i do see
> > >> > both LDP neighbors up.
> > >> >
> > >> >
> > >> > 2009/10/12 Nicolas Leiva <nicolasleiva_at_gmail.com>
> > >> >
> > >> >
> > >> >> You have LDP enabled right?. Did you check the LFIB on every hop?.
> > >> >>
> > >> >> Nicolas
> > >> >> http://ccie-en-espanol.blogspot.com/
> > >> >>
> > >> >> On Mon, Oct 12, 2009 at 7:35 PM, JR Garcia <ttuner_at_gmail.com>
> wrote:
> > >> >>
> > >> >>
> > >> >>> topology looks like this: CE-PE-P-PE-CE
> > >> >>>
> > >> >>> the PE routers run MPBGP/iBGP between them, the P router is only
> > >> >>> doing MPLS.
> > >> >>>
> > >> >>> On the CE/PE routers, i can see the routes from either side, but i
> > >> >>> am unable to pass traffic.
> > >> >>>
> > >> >>> PE1:
> > >> >>>
> > >> >>> PE1#sh ip route vrf A
> > >> >>>
> > >> >>> Routing Table: A
> > >> >>> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> > >> >>> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
> area
> > >> >>> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type
> 2
> > >> >>> E1 - OSPF external type 1, E2 - OSPF external type 2
> > >> >>> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 -
> IS-IS
> > >> >>> level-2
> > >> >>> ia - IS-IS inter area, * - candidate default, U - per-user
> > >> >>> static rout
> > >> >>> o - ODR, P - periodic downloaded static route
> > >> >>>
> > >> >>> Gateway of last resort is not set
> > >> >>>
> > >> >>> 1.0.0.0/32 is subnetted, 1 subnets
> > >> >>> B 1.1.1.1 is directly connected, 00:11:19, Loopback1
> > >> >>> C 192.168.1.0/24 is directly connected, FastEthernet0/1
> > >> >>> B 192.168.2.0/24 [200/0] via 10.2.2.1, 00:11:34
> > >> >>> PE1#ping vrf A 192.168.2.1 source 192.168.1.1
> > >> >>>
> > >> >>> Type escape sequence to abort.
> > >> >>> Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2
> seconds:
> > >> >>> Packet sent with a source address of 192.168.1.1 .....
> > >> >>> Success rate is 0 percent (0/5)
> > >> >>>
> > >> >>>
> > >> >>> PE2:
> > >> >>> PE2#sh ip route vrf B
> > >> >>>
> > >> >>> Routing Table: B
> > >> >>> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> > >> >>> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter
> area
> > >> >>> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type
> 2
> > >> >>> E1 - OSPF external type 1, E2 - OSPF external type 2
> > >> >>> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 -
> IS-IS
> > >> >>> level-2
> > >> >>> ia - IS-IS inter area, * - candidate default, U - per-user
> > >> static
> > >> >>> route
> > >> >>> o - ODR, P - periodic downloaded static route
> > >> >>>
> > >> >>> Gateway of last resort is not set
> > >> >>>
> > >> >>> 1.0.0.0/32 is subnetted, 1 subnets
> > >> >>> B 1.1.1.1 [200/0] via 10.1.1.1, 00:11:34
> > >> >>> B 192.168.1.0/24 [200/0] via 10.1.1.1, 00:11:37
> > >> >>> C 192.168.2.0/24 is directly connected, FastEthernet0/1
> > >> >>>
> > >> >>> PE2#ping vrf B 192.168.1.1 source 192.168.2.1
> > >> >>>
> > >> >>> Type escape sequence to abort.
> > >> >>> Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2
> seconds:
> > >> >>> Packet sent with a source address of 192.168.2.1
> > >> >>> .....
> > >> >>> Success rate is 0 percent (0/5)
> > >> >>>
> > >> >>>
> > >> >>> help?
> > >> >>>
> > >> >>>
> > >> >>> Blogs and organic groups at http://www.ccie.net
> > >> >>>
> > >> >>>
> > >>
> _______________________________________________________________________
> > >> >>> Subscription information may be found at:
> > >> >>> http://www.groupstudy.com/list/CCIELab.html
> > >> >>>
> > >> >
> > >> >
> > >> > Blogs and organic groups at http://www.ccie.net
> > >> >
> > >> >
> > _______________________________________________________________________
> > >> > Subscription information may be found at:
> > >> > http://www.groupstudy.com/list/CCIELab.html
> > >>
> > >>
> > >> Blogs and organic groups at http://www.ccie.net
> > >>
> > >>
> _______________________________________________________________________
> > >> Subscription information may be found at:
> > >> http://www.groupstudy.com/list/CCIELab.html
> > >>
> > >>
> > >> Blogs and organic groups at http://www.ccie.net
> > >>
> > >>
> _______________________________________________________________________
> > >> Subscription information may be found at:
> > >> http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > 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
> Technical Instructor - IPexpert, Inc.
> Cell: +1.586.212.6107
> Fax: +1.810.454.0130
> Mailto: jastorino_at_ipexpert.com
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
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Blogs and organic groups at http://www.ccie.net
Received on Fri Oct 16 2009 - 10:27:29 ART
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