10-31-2013 08:48 AM
Hi, everyone, i need to implement this over XR. I tryed to do , as this document but it did not work.
http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a0080125b01.shtml#case1
Do anyone, know where is this document for XR ?? or if it´s supported for XR. Thanks very much.
11-04-2013 07:18 AM
See how they check the next-hop of the VPN route (route in the VRF) whether it is reachable via the tunnel-te interface
Do you see that?
PE1# show cef vrf aqua 172.16.13.13
via 10.11.11.11
PE1# show route 10.11.11.11
* 10.11.11.11, from 10.11.11.11, via Tunnel0
PE1# show mpls forwarding int tunnel-te0
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
21 Pop tag 10.11.11.11/32 0 Tu0 point2point
This is accomplished by the command:
int tunnel-te 0
autoroute announce
Same has to be true for the opposite PE2
Since the traffic-engineering tunnel is unidirectional you have to manually configure a TE-tunnel in the opposite direction from PE2 to PE1
11-04-2013 07:25 AM
i see,
PE1# show mpls forwarding int tunnel-te0
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
21 no label 10.11.11.11/32 0 Tu0 point2point
i tryed with ip route, and autoroute announce in both sides.
Should i configure anything else?? i only enable mpls over the tunnel
11-04-2013 07:40 AM
You see the “no label” in the outgoing direction.
That is always a sign that mpls forwarding is not working properly between the two routers
See the P1 should have send you the implicit pop label for the NH prefix (over the LDP session)
which would translate into “Pop tag“ in the outgoing direction as seen in the output I have posted.
The mpls forwarding/LDP has to be enabled on all the interfaces interconnecting
PE1 and P1 and P2 and PE2
PE1
mpls ldp
interface GigabitEthernet0/x/x/x -> to P1
P1
mpls ldp
interface GigabitEthernet0/x/x/x -> to PE1
interface GigabitEthernet0/x/x/y -> to P2
you can verify the LDP neighbors with cmd:
sh mpls ldp nei
11-04-2013 08:03 AM
yes every ldp is up.
I enabled also
PE1
mpls ldp
interface GigabitEthernet0/x/x/x -> to P1
interface tunnel0 -> to PE2
PE2mpls ldpinterface tunnel0 -> to PE1
I know that should not be necesary, but i want to know if i´m missing somenting else in the configuration.
11-05-2013 04:24 AM
I’m sorry to confuse things with my previous post
Actually The pop-label should be allocated by PE2 which is not happening for some reason.
Please show me the output from both PE routers:
PE1
sh mpls for prefix 10.11.11.11/32 det
PE2
sh mpls for prefix 10.2.2.2/32 det
I’m interested in: Label Stack (Top -> Bottom):
And
PE1& PE2
sh ip rsvp reservation detail
I’m interested in:
Resource:
Labels: Local downstream:
And yes you can remove the “mpls ip” from the tunnel interface on both PE routers as it is not needed
Also you don’t need the static routes as “autoroute announce” will take care of the routing
adam
11-06-2013 07:41 AM
hI, here you are, i´m seeing that XR is not puting the next-hop in the reservation, this is normal ?
RP/0/0/CPU0:PE2#sh mpls forwarding prefix 11.11.0.1/32 det
Wed Nov 6 22:38:18.605 SGT
Local Outgoing Prefix Outgoing Next Hop Bytes
Label Label or ID Interface Switched
------ ----------- ------------------ ------------ --------------- ------------
16000 Pop 11.11.0.1/32 tt22 11.11.0.1 1586
Updated Nov 6 22:24:10.875
Version: 186, Priority: 1
MAC/Encaps: 14/18, MTU: 1500
Label Stack (Top -> Bottom): { 16010 Imp-Null }
Packets Switched: 30
RP/0/0/CPU0:PE2#sh rsvp reservation detail
RESV: IPv4-LSP Session addr: 11.11.0.2. TunID: 22. LSPId: 1.
Source addr: 11.11.0.2. ExtID: 11.11.0.1.
Input adjusted interface: No. Input physical interface: No.
Next hop: 0.0.0.0 (lih: 0x0).
Style: Shared-Explicit. Service: Controlled-Load.
Rate: 5000000 bits/sec. Burst: 1K bytes. Peak: 5M bits/sec.
MTU min: 0, max: 1500 bytes.
Flags: Local Receiver.
State expires in 0.000 sec.
Policy: Accepted. Policy source(s): Default.
Header info: RSVP TTL=255. IP TTL=255. Flags: 0x0. TOS=0xff.
Resource:
Labels: Local downstream: 3.
RP/0/0/CPU0:PE2#SH RUN INT TUNNel-TE22
Wed Nov 6 22:50:58.087 SGT
interface tunnel-te22
ipv4 unnumbered Loopback0
autoroute announce
destination 11.11.0.1
path-option 1 explicit name R2_R1
!
RP/0/0/CPU0:PE2#SHOW ROUTE 11.11.0.1
Wed Nov 6 22:53:13.105 SGT
Routing entry for 11.11.0.1/32
Known via "isis abc", distance 115, metric 40, type level-1
Installed Nov 6 22:24:10.865 for 00:29:02
Routing Descriptor Blocks
11.11.0.1, from 11.11.0.1, via tunnel-te22
Route metric is 40
No advertising protos.
PE1 #sh mpls forwarding-table 11.11.0.2 det
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or Tunnel Id Switched interface
24 No Label 11.11.0.2/32 0 Tu22 point2point
MAC/Encaps=14/18, MRU=1500, Label Stack{16012}, via Et0/1
0281EDC511EFAABBCC006C108847 03E8C000
No output feature configured
PE1#sh ip rsvp reservation det
Reservation:
Tun Dest: 11.11.0.2 Tun ID: 22 Ext Tun ID: 11.11.0.1
Tun Sender: 11.11.0.1 LSP ID: 1
Next Hop: 9.9.48.4 on Ethernet0/1
Label: 16012 (outgoing)
Reservation Style is Shared-Explicit, QoS Service is Controlled-Load
Resv ID handle: 0500040E.
Created: 15:12:43 EST Sun Nov 3 2013
Average Bitrate is 5M bits/sec, Maximum Burst is 1K bytes
Min Policed Unit: 0 bytes, Max Pkt Size: 1500 bytes
Status:
Policy: Accepted. Policy source(s): MPLS/TE
PE1#sh run int tunnel 22
Building configuration...
Current configuration : 290 bytes
!
interface Tunnel22
ip unnumbered Loopback0
tunnel mode mpls traffic-eng
tunnel destination 11.11.0.2
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng path-option 1 explicit name R1_R2
PE1#SH IP ROUTE 11.11.0.2
Routing entry for 11.11.0.2/32
Known via "isis", distance 115, metric 30, type level-1
Redistributing via isis
Last update from 9.9.0.2 on Tunnel82, 00:24:03 ago
Routing Descriptor Blocks:
* 11.11.0.2, from 11.11.0.2, 00:24:03 ago, via Tunnel22
Route metric is 30, traffic share count is 1
11-08-2013 01:03 AM
Hi,
In the PE1#SH IP ROUTE 11.11.0.2 output
Why the route is known via 9.9.0.2 on Tunnel82 <- what is tunnel82 please?
I believe it should be more like:
Last update from 11.11.0.2 on Tunnel22
Also regarding the “sh ip rsvp reservation det” outputs have you selected and copied only information related to PE’s local tunnel?
Because normally the outputs should list the opposite side tunnel (tunnel form the remote PE) as well.
adam
11-08-2013 06:35 AM
Sorry , someone change the config. Now it´s ok
PE1#SH IP ROUTE 11.11.0.2
Routing entry for 11.11.0.2/32
Known via "isis", distance 115, metric 30, type level-1
Redistributing via isis
Last update from 11.11.0.2 on Tunnel22, 00:14:07 ago
Routing Descriptor Blocks:
* 11.11.0.2, from 11.11.0.2, 00:14:07 ago, via Tunnel22
Route metric is 30, traffic share count is 1
im going to collect
“sh ip rsvp reservation det” again.
12-09-2013 11:08 AM
Finally i found the problem.
I was doing the test, with a simultator. when i tryed the same over real boxes, the feature run ok.
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