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Need help configuring a tunnel interface (basic mpls with rsvp)

I am trying to configure a tunnel interface with a specific destination. Even though that destination is reachable (I can ping it) I get the output below. "Path not valid... destination IP address not found."

Can anybody shed some light on why this is?

-------------

cisco7206#show mpls tr tun

Name: cisco7206_t0 (Tunnel0) Destination: 1.0.0.1

Status:

Admin: up Oper: down Path: not valid Signalling: Down

path option 1, type dynamic

Config Parameters:

Bandwidth: 0 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF

Metric Type: TE (default)

AutoRoute: disabled LockDown: disabled Loadshare: 0 bw-based

auto-bw: disabled

History:

Tunnel:

Time since created: 2 hours, 7 minutes

Path Option 1:

Last Error: PCALC:: Destination IP address, 1.0.0.1, not found

cisco7206#

5 REPLIES
New Member

Re: Need help configuring a tunnel interface (basic mpls with rs

Hi,

This may be due to a number of things, chief among them config problems. How does your tunnel config look like? Do you have RSVP configured along the path? How does

show mpls traffic-eng topology look like? I cannot tell from only this show command output what the problem could be, hopefully others can...

Thanks,

--tamrat

Anonymous
N/A

Re: Need help configuring a tunnel interface (basic mpls with rs

Hi. My tunnel config is (the tunnel dest is 1.0.0.2, not 1.0.0.1 as shown in my original post):

------------

!

interface Tunnel0

ip unnumbered Loopback0

tag-switching ip

tunnel destination 1.0.0.2

tunnel mode mpls traffic-eng

tunnel mpls traffic-eng autoroute announce

tunnel mpls traffic-eng path-option 1 dynamic

end

-----------

I have rsvp configured all along the path.

The show mpls tr top looks like:

-------------------------

cisco7206#show mpls tr top

My_System_id: 99.99.99.99, Globl Link Generation 2

Signalling error holddown: 10 sec

IGP Id: 99.99.99.99, MPLS TE Id:99.99.99.99 Router Node

link[0 ]:DR Intf Address: 1.0.0.1, gen:2

frag_id 0, Intf Address:1.0.0.1

TE metric:1, IGP metric:1, attribute_flags:0x0

physical_bw: 100000 (kbps), max_reservable_bw_global: 10000000 (kbps)

max_reservable_bw_sub: 0 (kbps)

Global Pool Sub Pool

Total Allocated Reservable Reservable

BW (kbps) BW (kbps) BW (kbps)

--------------- ----------- ----------

bw[0]: 0 10000000 0

bw[1]: 0 10000000 0

bw[2]: 0 10000000 0

bw[3]: 0 10000000 0

bw[4]: 0 10000000 0

bw[5]: 0 10000000 0

bw[6]: 0 10000000 0

bw[7]: 0 10000000 0

link[1 ]:DR Intf Address: 2.0.0.1, gen:2

frag_id 1, Intf Address:2.0.0.1

TE metric:1, IGP metric:1, attribute_flags:0x0

physical_bw: 100000 (kbps), max_reservable_bw_global: 10000000 (kbps)

max_reservable_bw_sub: 0 (kbps)

Global Pool Sub Pool

Total Allocated Reservable Reservable

BW (kbps) BW (kbps) BW (kbps)

--------------- ----------- ----------

bw[0]: 0 10000000 0

bw[1]: 0 10000000 0

bw[2]: 0 10000000 0

bw[3]: 0 10000000 0

bw[4]: 0 10000000 0

bw[5]: 0 10000000 0

bw[6]: 0 10000000 0

bw[7]: 0 10000000 0

cisco7206#

-------------------

New Member

Re: Need help configuring a tunnel interface (basic mpls with rs

Hi,

Ok, so you have RSVP configured and have enough BW on the tunnels. Could you check if you are propagating TE info into OSPF/ISIS? Is 1.0.0.2 one or more hops away? Could you do a traceroute to 1.0.0.2? And also do a show mpls interfaces?

I do not see anything wrong thus far, but perhaps one of the things I am asking you for here will uncover the problem.

Thanks,

--tamrat

Anonymous
N/A

Re: Need help configuring a tunnel interface (basic mpls with rs

I have made some progress. The original problem seems to have been a bandwidth problem. Now, when I give the command "debug ip rsvp all" I get:

---------------

sco7206#

cisco7206#

cisco7206#

*Mar 24 01:00:43.734: RSVP-API 99.99.99.99_443->1.0.0.2_1[0.0.0.0]: Failed to cr

eate proxy Path state, reason: Invalid route specification

cisco7206#

------------

repeatedly. Does anybody know what this means? If I do the command "show mpls tr top path tunnel 1"

I get:

---------------------

cisco7206#show mpls tr top path tunnel 1

Query Parameters:

Destination: 1.0.0.2

Bandwidth: 10

Priorities: 5 (setup), 5 (hold)

Affinity: 0x0 (value), 0xFFFF (mask)

Query Results:

Min Bandwidth Along Path: 80 (kbps)

Max Bandwidth Along Path: 100000 (kbps)

Hop 0: 1.0.0.1 : affinity 00000000, bandwidth 100000 (kbps)

Hop 1: 1.0.0.2 : affinity 00000000, bandwidth 80 (kbps)

Hop 2: 1.0.0.2

cisco7206#

----------------

which shows a valid path.

Any help would be appreciated.

Cisco Employee

Re: Need help configuring a tunnel interface (basic mpls with rs

Make sure that you the loopback interface address of the the egress router as the destination address. Also make sure you use the loopback interface for the "mpls traffic-eng router-id" command.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
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Cisco México
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Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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