01-05-2025 04:14 AM
Hi
I am doing a simple lab and at the very beginning I have a problem .Well it does not set up the tunnel ,I have checked the configuration many times with the official cisco materials and the configuration seems correct. Anyone can help ?
Below i am uploading my topology along with the configuration.
PE1 Configuration:
!
ip cef
mpls traffic-eng tunnels
mpls traffic-eng logging lsp setups
mpls traffic-eng logging lsp teardowns
mpls traffic-eng reoptimize events link-up
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface GigabitEthernet1/0
no shutdown
ip address 192.168.12.1 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet2/0
no shutdown
ip address 192.168.23.1 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
router ospf 1
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id 1.1.1.1
network 1.1.1.1 0.0.0.0 area 0
network 192.168.12.1 0.0.0.3 area 0
network 192.168.23.1 0.0.0.3 area 0
!
ip explicit-path name PE1-PE2 enable
next-address 192.168.12.2
next-address 192.168.34.2
next-address 4.4.4.4
!
interface Tunnel12
ip unnumbered Loopback0
tunnel destination 4.4.4.4
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng priority 2 2
tunnel mpls traffic-eng bandwidth 100
tunnel mpls traffic-eng path-option 1 explicit name PE1-PE2
!
...................................................................
PE2 Configuration:
!
ip cef
mpls traffic-eng tunnels
mpls traffic-eng logging lsp setups
mpls traffic-eng logging lsp teardowns
mpls traffic-eng reoptimize events link-up
!
interface Loopback0
ip address 4.4.4.4 255.255.255.255
!
interface GigabitEthernet1/0
no shutdown
ip address 192.168.34.2 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet2/0
no shutdown
ip address 192.168.45.2 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
router ospf 1
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id 4.4.4.4
network 4.4.4.4 0.0.0.0 area 0
network 192.168.34.0 0.0.0.3 area 0
network 192.168.45.0 0.0.0.3 area 0
!
ip explicit-path name PE2-PE1 enable
next-address 192.168.34.1
next-address 192.168.12.1
next-address 1.1.1.1
!
interface Tunnel21
ip unnumbered Loopback0
tunnel destination 1.1.1.1
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng priority 2 2
tunnel mpls traffic-eng bandwidth 100
tunnel mpls traffic-eng path-option 1 explicit name PE2-PE1
!
...................................................................
P1 Configuration:
ip cef
mpls traffic-eng tunnels
!
router ospf 1
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id 2.2.2.2
network 2.2.2.2 0.0.0.0 area 0
network 192.168.12.0 0.0.0.3 area 0
network 192.168.34.0 0.0.0.3 area 0
network 192.168.56.0 0.0.0.3 area 0
!
interface GigabitEthernet0/0
no shutdown
ip address 192.168.12.2 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet1/0
no shutdown
ip address 192.168.34.1 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet2/0
no shutdown
ip address 192.168.56.1 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
...................................................................
P2 Configuration:
ip cef
mpls traffic-eng tunnels
!
router ospf 1
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id 3.3.3.3
network 3.3.3.3 0.0.0.0 area 0
network 192.168.23.0 0.0.0.3 area 0
network 192.168.45.0 0.0.0.3 area 0
network 192.168.56.0 0.0.0.3 area 0
!
interface GigabitEthernet0/0
no shutdown
ip address 192.168.23.2 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet1/0
no shutdown
ip address 192.168.45.1 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface GigabitEthernet2/0
no shutdown
ip address 192.168.56.2 255.255.255.252
mpls traffic-eng tunnels
ip rsvp bandwidth 1000
!
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
Solved! Go to Solution.
01-05-2025 07:12 AM
ip ospf network point-to-point<<- did you add this under LO in all routers ? after that did you close and open the lab ?
MHM
01-05-2025 07:16 AM
Yes
01-05-2025 07:26 AM
After you add command
In RIB do you see LO as /32 or as /24?
MHM
01-05-2025 07:35 AM
/32
01-05-2025 07:38 AM
can I see last code you use for all routers
MHM
01-05-2025 07:45 AM
01-05-2025 08:12 AM - edited 01-05-2025 08:13 AM
tunnel mpls traffic-eng autoroute announce <<- try add this under Tunnel in each side
and assing IP to tunnel dont use ip unnumbered LO
MHM
01-05-2025 08:26 AM
Why? I think that it is not necessary to set up the tunnel.
01-05-2025 11:29 AM
Router# show mpls traffic-eng link-management advertisements
please close lab and reopen again and share above command from P1 and P2
NOTE:- please before close lab and reopen it, config mpls-te then config LO IP in P1 and P2
MHM
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