RE: pinging across an MPLS cloud (PE-PE) not working

What happens if you change the loopback to a /32. I know that OSPF is
advertising it as a /32, but it isn't configured as such. LDP is very
particular about /32.

David

--
http://dcp.dcptech.com
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Jules Eyabane
> Sent: Friday, June 17, 2011 10:42 PM
> To: Cisco certification
> Subject: pinging across an MPLS cloud (PE-PE) not working
> 
> i have the following setup:
> 
> R1----R2---R3---R4---R5
> 
> R1 and R5 are CE routers
> R2 and R4 are PE routers
> R3 is a P router
> 
> i have OSPF running as the underlining IGP between R2, R3 and R4, then
> i
> have MP-BGP running between the 2 PEs (R2 and R4)
> CE R1 uses EIGRP as the routing protocol of choice with PE R2, and CE
> R5
> uses RIP to talk to PE R4.
> LDP configured across R2, R3 and R4.
> Single VRF called HOME on both PEs.
> Routes are propagating across the PEs fine, but when from R1 between R5
> (sourcing from known ip to the remote end), it fails. So i moved closer
> and
> attempted ping between R2 and R4. fails too.
> On R2,  R4's loopback (4.4.4.4) is listed as the next hop to all routes
> beyond it. But recursive lookup on 4.4.4.4 from R2's VRF CEF and LFIB
> tables
> fail
> 
> Any suggestions would be appreciated!!!
> 
> Some outputs below:
> 
> R2-PE#sho ip bgp vpnv4 all
> BGP table version is 67, local router ID is 2.2.2.2
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
>               r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
> 
>    Network          Next Hop            Metric LocPrf Weight Path
> Route Distinguisher: 12:0 (default for vrf HOME)
> *> 1.0.0.0          10.1.12.1           409600         32768 ?
> *>i5.0.0.0          4.4.4.4                  5    100      0 ?
> *> 10.1.12.0/24     0.0.0.0                  0         32768 ?
> *>i10.1.45.0/24     4.4.4.4                  0    100      0 ?
> *> 11.0.0.0         10.1.12.1           409600         32768 ?
> *> 22.0.0.0         0.0.0.0                  0         32768 ?
> *>i44.0.0.0         4.4.4.4                  0    100      0 ?
> *>i55.0.0.0         4.4.4.4                  5    100      0 ?
> R2-PE#sho mpls ld
> R2-PE#sho mpls ldp bin
> R2-PE#sho mpls ldp bindings
>   tib entry: 2.0.0.0/8, rev 6
>         local binding:  tag: imp-null
>   tib entry: 2.2.2.2/32, rev 17
>         remote binding: tsr: 3.3.3.3:0, tag: 301
>   tib entry: 3.0.0.0/8, rev 15
>         remote binding: tsr: 3.3.3.3:0, tag: imp-null
>   tib entry: 3.3.3.3/32, rev 12
>         local binding:  tag: 201
>   tib entry: 4.4.4.4/32, rev 10
>         local binding:  tag: 200
>         remote binding: tsr: 3.3.3.3:0, tag: 300
>   tib entry: 10.1.23.0/24, rev 4
>         local binding:  tag: imp-null
>         remote binding: tsr: 3.3.3.3:0, tag: imp-null
>   tib entry: 10.1.34.0/24, rev 14
>         local binding:  tag: 202
>         remote binding: tsr: 3.3.3.3:0, tag: imp-null
>   tib entry: 33.0.0.0/8, rev 16
>         remote binding: tsr: 3.3.3.3:0, tag: imp-null
> R2-PE#sho mpls
> R2-PE#sho mpls for
> R2-PE#sho mpls forwarding-table
> Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop
> tag    tag or VC   or Tunnel Id      switched   interface
> 200    300         4.4.4.4/32        0          Se0/0      point2point
> 201    Untagged    3.3.3.3/32        0          Se0/0      point2point
> 202    Pop tag     10.1.34.0/24      0          Se0/0      point2point
> 204    Aggregate   22.0.0.0/8[V]     0
> 205    Aggregate   10.1.12.0/24[V]   0
> 207    Untagged    1.0.0.0/8[V]      0          Fa0/0      10.1.12.1
> 208    Untagged    11.0.0.0/8[V]     0          Fa0/0      10.1.12.1
> R2-PE#sho ip route vr
> R2-PE#sho ip route vrf HOME
> 
> Routing Table: HOME
> 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
> 
> D    1.0.0.0/8 [90/409600] via 10.1.12.1, 01:39:24, FastEthernet0/0
> B    55.0.0.0/8 [200/5] via 4.4.4.4, 00:34:25
> B    5.0.0.0/8 [200/5] via 4.4.4.4, 00:34:25
> C    22.0.0.0/8 is directly connected, Loopback11
>      10.0.0.0/24 is subnetted, 2 subnets
> C       10.1.12.0 is directly connected, FastEthernet0/0
> B       10.1.45.0 [200/0] via 4.4.4.4, 00:34:25
> D    11.0.0.0/8 [90/409600] via 10.1.12.1, 01:39:25, FastEthernet0/0
> B    44.0.0.0/8 [200/0] via 4.4.4.4, 00:34:25
> R2-PE#sho ip int brief
> Interface                  IP-Address      OK? Method Status
> Protocol
> FastEthernet0/0            10.1.12.2       YES manual up
> up
> Serial0/0                  10.1.23.2       YES NVRAM  up
> up
> FastEthernet0/1            unassigned      YES NVRAM  administratively
> down
> down
> Serial0/1                  unassigned      YES NVRAM  administratively
> down
> down
> Loopback0                  2.2.2.2         YES NVRAM  up
> up
> Loopback11                 22.2.2.2        YES manual up
> up
> R2-PE#ping vr
> R2-PE#ping vrf HOME 10.1.45.4 sou
> R2-PE#ping vrf HOME 10.1.45.4 source loo11
> 
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 10.1.45.4, timeout is 2 seconds:
> Packet sent with a source address of 22.2.2.2
> .....
> Success rate is 0 percent (0/5)
> 
> ======================
> R2's config below
> 
> hostname R2-PE
> !
> boot-start-marker
> boot-end-marker
> !
> !
> no aaa new-model
> memory-size iomem 5
> ip cef
> !
> ip vrf HOME
>  rd 12:0
>  route-target export 24:24
>  route-target import 42:42
> !
> no ip domain lookup
> !
> mpls label range 200 299
> mpls label protocol ldp
> multilink bundle-name authenticated
> !
> !!
> !
> archive
>  log config
>   hidekeys
> !
> !
> interface Loopback0
>  ip address 2.2.2.2 255.0.0.0
> !
> interface Loopback11
>  ip vrf forwarding HOME
>  ip address 22.2.2.2 255.0.0.0
> !
> interface FastEthernet0/0
>  ip vrf forwarding HOME
>  ip address 10.1.12.2 255.255.255.0
>  duplex auto
>  speed auto
> !
> interface Serial0/0
>  ip address 10.1.23.2 255.255.255.0
>  mpls ip
>  clock rate 2000000
> !
> interface FastEthernet0/1
>  no ip address
>  shutdown
>  duplex auto
>  speed auto
> !
> interface Serial0/1
>  no ip address
>  shutdown
>  clock rate 2000000
> !
> router eigrp 22
>  no auto-summary
>  !
>  address-family ipv4 vrf HOME
>   redistribute bgp 6500 metric 1 1 1 1 1
>   network 10.1.12.0 0.0.0.255
>   network 22.2.2.0 0.0.0.255
>   no auto-summary
>   autonomous-system 12
>   eigrp router-id 2.2.2.2
>  exit-address-family
>  eigrp router-id 2.2.2.2
> !
> router ospf 1
>  router-id 2.2.2.2
>  log-adjacency-changes
>  network 2.2.2.2 0.0.0.0 area 0
>  network 10.1.23.0 0.0.0.255 area 0
> !
> router bgp 6500
>  no bgp default ipv4-unicast
>  bgp log-neighbor-changes
>  neighbor 4.4.4.4 remote-as 6500
>  neighbor 4.4.4.4 update-source Loopback0
>  !
>  address-family vpnv4
>   neighbor 4.4.4.4 activate
>   neighbor 4.4.4.4 send-community both
>  exit-address-family
>  !
>  address-family ipv4 vrf HOME
>   redistribute eigrp 12
>   no synchronization
>  exit-address-family
> !
> ip forward-protocol nd
> !
> !
> ip http server
> no ip http secure-server
> !
> access-list 1 permit 4.4.4.4
> !
> !!
> mpls ldp router-id Loopback0
> !
> 
> 
> 
> =======================
> R4's config below
> hostname R4-PE
> !
> boot-start-marker
> boot-end-marker
> !
> !
> no aaa new-model
> memory-size iomem 5
> ip cef
> !
> ip vrf HOME
>  rd 12:0
>  route-target export 42:42
>  route-target import 24:24
> !
> no ip domain lookup
> !
> mpls label range 400 499
> mpls label protocol ldp
> multilink bundle-name authenticated
> !
> 
> archive
>  log config
>   hidekeys
> !
> 
> interface Loopback0
>  ip address 4.4.4.4 255.0.0.0
> !
> interface Loopback11
>  ip vrf forwarding HOME
>  ip address 44.4.4.4 255.0.0.0
> !
> interface FastEthernet0/0
>  ip vrf forwarding HOME
>  ip address 10.1.45.4 255.255.255.0
>  duplex auto
>  speed auto
> !
> interface Serial0/0
>  no ip address
>  shutdown
>  clock rate 2000000
> !
> interface FastEthernet0/1
>  no ip address
>  shutdown
>  duplex auto
>  speed auto
> !
> interface Serial0/1
>  ip address 10.1.34.4 255.255.255.0
>  mpls ip
>  clock rate 2000000
> !
> router ospf 1
>  router-id 4.4.4.4
>  log-adjacency-changes
>  network 4.4.4.4 0.0.0.0 area 0
>  network 10.1.34.0 0.0.0.255 area 0
> !
> router ospf 4
>  router-id 10.1.45.4
>  log-adjacency-changes
>  network 10.1.45.0 0.0.0.255 area 45
> !
> router rip
>  version 2
>  passive-interface default
>  no passive-interface FastEthernet0/0
>  no passive-interface Loopback0
>  no auto-summary
>  !
>  address-family ipv4 vrf HOME
>   redistribute bgp 6500 metric 5
>   network 4.0.0.0
>   network 10.0.0.0
>   network 44.0.0.0
>   no auto-summary
>   version 2
>  exit-address-family
> !
> router bgp 6500
>  no bgp default ipv4-unicast
>  bgp log-neighbor-changes
>  neighbor 2.2.2.2 remote-as 6500
>  neighbor 2.2.2.2 update-source Loopback0
>  !
>  address-family vpnv4
>   neighbor 2.2.2.2 activate
>   neighbor 2.2.2.2 send-community both
>  exit-address-family
>  !
>  address-family ipv4 vrf HOME
>   redistribute rip metric 5
>   no synchronization
>  exit-address-family
> 
> 
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