Re: mpls vpn question

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
> >> >>>
> >> >>>
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> >> >
> _______________________________________________________________________
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> >>
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> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
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> >>
> >>
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> >>
> >> _______________________________________________________________________
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>
>
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>
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-- 
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
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