in

CCIE - Internetwork Expert's Online Community

Latest post 10-27-2008 8:17 AM by danshtr. 4 replies.
Page 1 of 1 (5 items)
Sort Posts: Previous Next
  • 10-26-2008 9:32 AM

    • awilkins
    • Top 25 Contributor
    • Joined on 09-05-2008
    • Posts 79
    • Points 1,115

    MPLS Traffic Engineering over nonbroadcast OSPF links

    I'm doing Vol II lab 1 right now (section 4.4).  I cannot get R6 or R2 to show the LAN segment between them in the traffic-eng topology.  Neither will list the LAN interface in the "show ip ospf mpls traffic-eng link' output unless I take the 'ip ospf network nonbroadcast' off the interface.  The nonbroadcast was a prior step in the lab.  MPLS and routing are working fine on this connection.


    Is there a trick with MPLS Traffic engineering and nonbroadcast OSPF network types?

     

    R6#sh ip ospf neigh

    Neighbor ID     Pri   State           Dead Time   Address         Interface
    131.1.2.2         1   FULL/BDR        00:01:37    131.1.26.2      Ethernet0/0
    R6#
    R6#sh mpls ldp disc
     Local LDP Identifier:
        131.1.6.6:0
        Discovery Sources:
        Interfaces:
            Ethernet0/0 (ldp): xmit/recv
                LDP Id: 131.1.2.2:0
    R6#
    R6#sh ip ospf mpls traffic-eng link

                OSPF Router with ID (131.1.6.6) (Process ID 1)

      Area 0 has 0 MPLS TE links. Area instance is 1.
    R6#

     

    R6#sh ip route
    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

    B    119.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    118.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    117.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    116.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    115.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    114.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
         54.0.0.0/24 is subnetted, 1 subnets
    C       54.1.2.0 is directly connected, Serial1/0
    B    113.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
    B    112.0.0.0/8 [20/0] via 54.1.2.254, 00:09:40
         131.1.0.0/16 is variably subnetted, 14 subnets, 3 masks
    O       131.1.9.9/32 [110/6] via 131.1.26.2, 00:09:52, Ethernet0/0
    B       131.1.8.8/32 [200/0] via 131.1.5.5, 00:09:29
    C       131.1.6.6/32 is directly connected, Loopback0
    O       131.1.5.5/32 [110/68] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.4.4/32 [110/6] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.3.3/32 [110/4] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.2.2/32 [110/2] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.1.1/32 [110/4] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.12.0/29 [110/3] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.13.0/29 [110/5] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.23.0/29 [110/3] via 131.1.26.2, 00:09:53, Ethernet0/0
    C       131.1.26.0/24 is directly connected, Ethernet0/0
    O       131.1.34.0/29 [110/5] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       131.1.35.0/29 [110/67] via 131.1.26.2, 00:09:53, Ethernet0/0
         28.0.0.0/24 is subnetted, 2 subnets
    B       28.119.17.0 [20/0] via 54.1.2.254, 00:09:40
    B       28.119.16.0 [20/0] via 54.1.2.254, 00:09:40
         150.100.0.0/32 is subnetted, 1 subnets
    O       150.100.100.254 [110/5] via 131.1.26.2, 00:09:53, Ethernet0/0
         150.1.0.0/24 is subnetted, 3 subnets
    O       150.1.102.0 [110/5] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       150.1.101.0 [110/4] via 131.1.26.2, 00:09:53, Ethernet0/0
    O       150.1.109.0 [110/5] via 131.1.26.2, 00:09:53, Ethernet0/0
    R6#


    R6#sh mpls forwarding-table
    Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop   
    tag    tag or VC   or Tunnel Id      switched   interface             
    16     Pop tag     131.1.23.0/29     0          Et0/0      131.1.26.2  
    17     17          131.1.13.0/29     0          Et0/0      131.1.26.2  
    18     16          131.1.1.1/32      0          Et0/0      131.1.26.2  
    19     Pop tag     131.1.2.2/32      0          Et0/0      131.1.26.2  
    20     23          131.1.3.3/32      0          Et0/0      131.1.26.2  
    21     24          131.1.4.4/32      0          Et0/0      131.1.26.2  
    22     25          131.1.5.5/32      0          Et0/0      131.1.26.2  
    23     22          131.1.9.9/32      0          Et0/0      131.1.26.2  
    24     Pop tag     131.1.12.0/29     0          Et0/0      131.1.26.2  
    25     26          131.1.34.0/29     0          Et0/0      131.1.26.2  
    26     27          131.1.35.0/29     0          Et0/0      131.1.26.2  
    27     18          150.1.101.0/24    0          Et0/0      131.1.26.2  
    28     19          150.1.102.0/24    0          Et0/0      131.1.26.2  
    29     20          150.1.109.0/24    0          Et0/0      131.1.26.2  
    30     21          150.100.100.254/32   \
                                         0          Et0/0      131.1.26.2  
    R6# 

     

    R6#sh run
    Building configuration...

    Current configuration : 2462 bytes
    !
    version 12.3
    service timestamps debug datetime msec
    service timestamps log datetime msec
    no service password-encryption
    !
    hostname R6
    !
    boot-start-marker
    boot-end-marker
    !
    enable password cisco
    !
    memory-size iomem 5
    no aaa new-model
    ip subnet-zero
    !
    !
    no ip domain lookup
    !
    !
    ip cef   
    ip ips po max-events 100
    mpls label protocol ldp
    mpls ldp neighbor 131.1.2.2 password 7 062526126F61
    mpls traffic-eng tunnels
    no ftp-server write-enable
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !
    !        
    !
    !
    interface Loopback0
     ip address 131.1.6.6 255.255.255.255
    !
    interface Ethernet0/0
     bandwidth 100000
     ip address 131.1.26.6 255.255.255.0
     ip ospf authentication message-digest
     ip ospf message-digest-key 1 md5 CISCO
     ip ospf network non-broadcast
     full-duplex
     mpls traffic-eng tunnels
     tag-switching ip
     ip rsvp bandwidth
    !
    interface Ethernet0/1
     no ip address
     shutdown
     half-duplex
    !
    interface Ethernet0/2
     no ip address
     shutdown
     half-duplex
    !
    interface Ethernet0/3
     no ip address
     shutdown
     half-duplex
    !
    interface Serial1/0
     ip address 54.1.2.6 255.255.255.0
     encapsulation frame-relay
     serial restart-delay 0
     no arp frame-relay
     frame-relay map ip 54.1.2.254 100 broadcast
     no frame-relay inverse-arp
     frame-relay lmi-type ansi
    !
    interface Serial1/1
     no ip address
     shutdown
     serial restart-delay 0
    !
    interface Serial1/2
     no ip address
     shutdown
     serial restart-delay 0
    !
    interface Serial1/3
     no ip address
     shutdown
     serial restart-delay 0
    !
    router ospf 1
     mpls traffic-eng router-id Loopback0
     mpls traffic-eng area 0
     mpls traffic-eng interface Ethernet0/0 area 0
     log-adjacency-changes
     network 131.1.6.6 0.0.0.0 area 0
     network 131.1.26.6 0.0.0.0 area 0
     neighbor 131.1.26.2 priority 1
    !
    router bgp 100
     no bgp default ipv4-unicast
     bgp log-neighbor-changes
     neighbor 54.1.2.254 remote-as 54
     neighbor 131.1.1.1 remote-as 100
     !
     address-family ipv4
     neighbor 54.1.2.254 activate
     neighbor 54.1.2.254 route-map AS100_COMMUNITY in
     neighbor 131.1.1.1 activate
     neighbor 131.1.1.1 next-hop-self
     neighbor 131.1.1.1 send-community both
     no auto-summary
     no synchronization
     exit-address-family
    !
    ip http server
    no ip http secure-server
    ip classless
    !
    ip bgp-community new-format
    !
    !
    !
    route-map AS100_COMMUNITY permit 100
     set local-preference 120
     set community 100:54
    !        
    !
    !
    control-plane
    !
    !
    !
    !
    !
    !
    !
    !
    !
    line con 0
     exec-timeout 0 0
     privilege level 15
     logging synchronous
    line aux 0
     exec-timeout 0 0
     privilege level 15
    line vty 0 4
     password cisco
     login
    !        
    !
    end

     

     

     

    • Post Points: 35
  • 10-26-2008 10:30 PM In reply to

    • danshtr
    • Top 75 Contributor
    • Joined on 07-17-2008
    • Posts 26
    • Points 430

    Re: MPLS Traffic Engineering over nonbroadcast OSPF links

    http://ieoc.com/forums/t/762.aspx

    • Post Points: 20
  • 10-27-2008 1:52 AM In reply to

    Re: MPLS Traffic Engineering over nonbroadcast OSPF links

    Hi dude,

    MPLS TE is  working fine for me with ospf point-to-multipoint non-broadcast on R2 and R6 interfaces. And I tried to change network type between R2 and R6 from point-to-multipoint non-broadcast to non-broadcast type. After that MPLS TE can't come up.

    Inside your config you are using non-broadcast, may be that's why you can't see MPLS TE under sh ip ospf mpls te link.

    HTH,

    • Post Points: 5
  • 10-27-2008 7:53 AM In reply to

    • awilkins
    • Top 25 Contributor
    • Joined on 09-05-2008
    • Posts 79
    • Points 1,115

    Re: MPLS Traffic Engineering over nonbroadcast OSPF links

    Excellent!  Thanks!   I troubleshot this for 3 hours yesterday........  Oh well  Big Smile

     

    I hope the next version of the lab 1 doesn't have us set this up as an OSPF non-broadcast link a couple of steps beforehand.  Cisco bugs drive me nuts....

    • Post Points: 20
  • 10-27-2008 8:17 AM In reply to

    • danshtr
    • Top 75 Contributor
    • Joined on 07-17-2008
    • Posts 26
    • Points 430

    Re: MPLS Traffic Engineering over nonbroadcast OSPF links

    If lab 1 would not force you to do so, how would have you known about it before the real lab?

     

    Small errors, and I dont think its an error at all, makes me question the solution and dig deeper.

     

     

     

    • Post Points: 5
Page 1 of 1 (5 items)