MPLE TE Configuration

Carl Williams · ‎06-25-2010

Hi All

Can someone assist me in the configuration, with the configuration of Two MPLS TE tunnels. This is how the network should work.

Some details of the topology can be found below.

PE - 1 loopback = 204.134.83.3

P1 = loopback = 204.134.85.2

P2 = loopback = 204.134.83.15

P3 = loopback = 204.134.84.49

PE2 = loopback = 204.134.83.11

Now what i need to do is configure two MPLE TE tunnels the primary tunnel should transport traffic Path 1 = PE-1, P1, P2, PE-2

The second Tunnel should transport traffic via Path 2 PE-1,P1,P3,P2, PE2.

Path will always act as the primary, path two will be the secondary, I want Tunnel 2 two also act as a backup if the link between P1 and P2 were to ever go down. Would be nice to have a FRR for tunnel two.

Help With this would be much appreciated. Please find topology attached. Please find current configurations attached, please ignore the GRE IPSEC tunnels in the configurations these were put in place because i wanted to encrypt traffic between all the nodes in the provider network.

For now all i need is assistance in building two tunnels between the provider routers. Topology attached.

PE-1 = Headend

PE-2 = Tail end router.

Thanks regards

Carl Williams

Carl Williams · ‎06-25-2010

PE2 attached also.

thanks

shivlu jain · ‎06-27-2010

See this how to create TE tunnels.

http://www.mplsvpn.info/search/label/TE

regards

Shivlu Jain

Chetan Kumar Ress · ‎06-28-2010

Hi

In below link you can see the sample config of MPLS TE & The MPLS TE concept.

http://fengnet.com/book/MPLS%20Configuration%20on%20Cisco%20IOS%20Software/ch09lev1sec4.html

Here is the below config that you can refer :-

interface Tunnel0

ip unnumbered Loopback0

tunnel destination x.x.x.x

tunnel mode mpls traffic-eng

tunnel mpls traffic-eng autoroute announce

tunnel mpls traffic-eng priority 1 1

tunnel mpls traffic-eng path-option 1 dynamic ------ Here it will use CSPF Protocol to find path Dyanamic.

tunnel MPLS traffic-eng bandwidth 100

!

interface Tunnel1

ip unnumbered Loopback0

tunnel destination x.x.x.x

tunnel mode mpls traffic-eng

tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng priority 2 2

tunnel mpls traffic-eng path-option 1 explicit name LSP1 ------ Here You can mention the path that you want.

tunnel MPLS traffic-end bandwidth 100

ip explicit-path name LSP1 enable
next-address x.x.x.x -- 1st Router Hops

next-address x.x.x.x -- 2nd Router Hops
next-address x.x.x.x -- 3rd Router Hops

Carl Williams · ‎06-28-2010

I've configured my network now but my tunnels are show as up down now.

PE-1#show mpls traffic-eng tunnels summary
Signalling Summary:
    LSP Tunnels Process:            running
    RSVP Process:                   running
    Forwarding:                     enabled
    Head: 4 interfaces, 0 active signalling attempts, 0 established
          0 activations, 0 deactivations
    Midpoints: 0, Tails: 0
    Periodic reoptimization:        every 3600 seconds, next in 703 seconds
    Periodic auto-bw collection:    disabled

PE-1#show mpls traffic-eng tunnels brief
Signalling Summary:
    LSP Tunnels Process:            running
    RSVP Process:                   running
    Forwarding:                     enabled
    Periodic reoptimization:        every 3600 seconds, next in 747 seconds
    Periodic auto-bw collection:    disabled
TUNNEL NAME                      DESTINATION      UP IF     DOWN IF   STATE/PROT
PE-1_t0                          204.134.83.1     -         unknown   up/down
PE-1_t1                          204.134.83.1     -         unknown   up/down
PE-1_t2                          204.134.83.8     -         unknown   up/down
PE-1_t3                          204.134.83.8     -         unknown   up/down
Displayed 4 (of 4) heads, 0 (of 0) midpoints, 0 (of 0) tails

Giuseppe Larosa · ‎06-28-2010

Hello Carl,

until you don't add the command

ip rsvp bandwidth xxx under each physical interface

and you don't add the MPLS TE extensions to the OSPF IGP you cannot see your MPLS TE tunnels coming up

ip rsvp bandwidth on each core facing link that you want to take part in the MPLS TE domain

+

router ospf 101

mpls traffic-eng router-id Loopback0

mpls traffic-eng area 0

note: MPLS TE can work on a single OSPF area unless other tricks are used

Hope to help

Giuseppe