02-09-2004 03:53 PM
Hi, I have MPLS l2transport configured with EoMPLS, and 2 CE's with 802.1q trunk in the PE's-CE's links.
The vc status is up in the MPLS core and the links CE-PE are up but the packets die in the PE.
CE1-(802.1q)--PE1--P--PE2--(802.1q)-CE2
<----vc--->
Any ideas about this problem? What could I be configuring wrong?
Solved! Go to Solution.
02-29-2004 05:16 PM
I just saw something interesting in the first output you provided:
Tunnel label: not ready, not a host route
Is the loopback address of the two PEs explictly advertised in OSPF? If not, this could be the issue.
02-09-2004 04:59 PM
Make sure you have an LSP from PE1 to PE2 and another one back. If you don't, verify that P sees both PE1 and PE2 as LDP neighbors.
02-10-2004 01:30 PM
The VC is ok, the LDP sessions are ok in the three routers.
r5#sh mpls l2transport vc detail
Local interface: Fa1/1.100 up, line protocol up, Eth VLAN 100 up
Destination address: 10.1.1.1, VC ID: 100, VC status: up
Tunnel label: 18, next hop point2point
Output interface: Se3/0:0, imposed label stack {18 19}
Create time: 1w0d, last status change time: 23:47:53
Signaling protocol: LDP, peer 10.1.1.1:0 up
MPLS VC labels: local 21, remote 19
Group ID: local 2, remote 2
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 0, send 0
byte totals: receive 0, send 0
packet drops: receive 0, send 0
If I ping from the CE to CE packets don´t go through the tunnel
02-10-2004 08:59 PM
A couple of questions for you.
What platform is this?
What IOS version?
Could post a copy of the PE configs.
Thanks,
02-17-2004 02:17 PM
Hi, the PE's are 7206 with 12.2-14 IOS and the CE's are 2611 with 12.3-5
CE1 configuration:
r6#show running-config
Building configuration...
Current configuration : 1743 bytes
!
version 12.3
service timestamps debug datetime localtime
service timestamps log datetime localtime show-timezone
no service password-encryption
!
hostname r6
!
boot-start-marker
boot-end-marker
!
no logging console
enable password cisco
!
memory-size iomem 15
clock timezone Uruguay 0
no aaa new-model
ip subnet-zero
ip tftp source-interface Ethernet0/0
no ip domain lookup
ip host r14 10.10.4.2
ip host r13 10.10.3.2
ip host r9 192.168.10.9
ip host r8 192.168.10.8
ip host r7 192.168.10.7
ip host r5 192.168.10.5
ip host r4 192.168.10.4
ip host r3 192.168.10.3
ip host r2 192.168.10.2
ip host r1 192.168.10.1
no ftp-server write-enable
!
!
!
!
interface Loopback0
no ip address
no ip mroute-cache
shutdown
!
interface Ethernet0/0
description LAN LOCAL
ip address 10.0.0.2 255.255.255.0
no ip mroute-cache
full-duplex
no keepalive
!
interface Ethernet0/0.100
no ip mroute-cache
!
interface Serial0/0
no ip address
no ip mroute-cache
shutdown
no fair-queue
!
interface Ethernet0/1
ip address 192.168.10.1 255.255.255.0
no ip mroute-cache
full-duplex
!
interface FastEthernet1/0
no ip address
no ip mroute-cache
speed 100
full-duplex
no keepalive
!
interface FastEthernet1/0.100
encapsulation dot1Q 100
ip address 192.168.22.6 255.255.255.0
!
interface FastEthernet1/0.200
encapsulation dot1Q 200
ip address 192.168.200.6 255.255.255.0
!
no ip http server
ip classless
!
!
!
tftp-server flash:
tftp-server flash:c2600-telco-mz.123-5.bin
!
line con 0
transport preferred all
transport output all
line aux 0
transport preferred all
transport output all
line vty 0 4
password cisco
login
transport preferred all
transport input all
transport output all
!
ntp clock-period 17208299
ntp server 192.168.56.5
!
end
.....................................
PE1 configuration:
r5#sh running-config
Building configuration...
Current configuration : 2997 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r5
!
logging snmp-authfail
logging cns-events debugging
enable password cisco
!
ip subnet-zero
ip cef
!
!
no ip domain-lookup
ip host r14 10.10.4.2
ip host r13 10.10.3.2
ip host r9 192.168.10.9
ip host r8 192.168.10.8
ip host r7 192.168.10.7
ip host r6 192.168.10.6
ip host r4 192.168.10.4
ip host r3 192.168.10.3
ip host r2 192.168.10.2
ip host r1 192.168.10.1
!
mpls label protocol ldp
mpls ldp logging neighbor-changes
tag-switching tdp router-id Loopback0 force
!
class-map match-all VOIP
match mpls experimental 5
class-map match-any VOIPCLIENTE
match ip dscp ef
!
!
policy-map SETEXP
class VOIPCLIENTE
set mpls experimental 5
policy-map CLIENTE
class VOIPCLIENTE
priority 32
class class-default
fair-queue
shape average 256000
policy-map PREMIUM384
class VOIP
priority 120
class class-default
fair-queue
policy-map PREMIUM256
class VOIP
priority 80
class class-default
fair-queue
!
call rsvp-sync
!
!
!
!
!
!
controller E1 3/0
channel-group 0 timeslots 1-4
!
controller E1 3/1
channel-group 0 timeslots 1-4
!
controller E1 3/2
!
controller E1 3/3
!
controller E1 3/4
!
controller E1 3/5
!
controller E1 3/6
!
controller E1 3/7
!
!
!
interface Loopback0
ip address 10.1.1.5 255.255.255.255
!
interface FastEthernet1/0
no ip address
shutdown
duplex full
!
interface FastEthernet1/0.100
!
interface FastEthernet1/1
no ip address
no keepalive
duplex full
tag-switching mtu 1520
tag-switching ip
!
interface FastEthernet1/1.100
encapsulation dot1Q 100
ip directed-broadcast
mpls l2transport route 10.1.1.1 100
tag-switching mtu 1520
tag-switching ip
!
interface FastEthernet1/1.200
encapsulation dot1Q 200
mpls l2transport route 10.1.1.1 200
!
interface Serial3/0:0
description ATOM: CONEXION CON R3
mtu 2000
ip address 192.168.2.5 255.255.255.0
tag-switching mtu 1512
tag-switching ip
!
interface Serial3/1:0
description ATOM: CONEXION CON R6
ip address 192.168.4.5 255.255.255.0
tag-switching ip
!
interface FastEthernet4/0
no ip address
shutdown
duplex half
mpls label protocol ldp
tag-switching ip
!
interface ATM6/0
no ip address
shutdown
!
router ospf 100
router-id 10.1.1.5
log-adjacency-changes
redistribute connected
redistribute static
network 10.1.1.0 0.0.0.255 area 0
network 192.168.2.0 0.0.0.255 area 0
!
ip classless
no ip http server
!
ip explicit-path name respaldoR1 enable
next-address 192.168.15.1
next-address 192.168.12.2
!
ip explicit-path name clasebeR8 enable
next-address 192.168.58.8
next-address 192.168.28.2
!
!
ip access-list standard Wo
!
logging trap debugging
logging source-interface Serial3/0:0
logging 200.40.120.76
logging 192.168.0.3
!
!
tftp-server slot0
tftp-server slot1
tftp-server slot0:
tftp-server slot0:c7200-p-mz.122-14.S.bin
!
dial-peer cor custom
!
!
!
!
line con 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
no login
!
end
................
The pair CE2-PE2 is like CE1-PE1
Tanks
02-17-2004 07:54 PM
Your configuration looks good a part from the fact that "tag-switching ip" is configured under fa1/1. Could you remove that command and see if it fixes the issue.
Can you also tell us how you are testing the forwarding plane.
02-18-2004 02:55 PM
what do you mean by saying forwarding plane?
What I did to test MPLS is a trace from the PE1 to PE2. I saw the label swaping. To check the trunk 802.1q I used the "show vlans" command and "show mpls l2transport vc detail". everiting seems fine.
02-18-2004 04:48 PM
Two things I would like you to verify.
- Is your IOS 12.2(14) or 12.2(14)S
- Could you make sure there is an LSP between the two PEs. The best thing to do is to start with the outside label given in the "show mpls l2transport vc detail" command and to verify the LSP hop by hop.
From you previous post:
Output interface: Se3/0:0, imposed label stack {18 19}
Do the same in both direction.
02-20-2004 03:36 PM
PE1 and PE2 : 12.2(14)S
and P : 12.3(5)
ty
02-18-2004 05:06 PM
Could you run the following commands for me:
On P: sh mpls forwarding-table label 18
On PE2: show mpls l2transport vc detail
On P: sh mpls forwarding-table label
This is to verify that you have end to end LSPs between the two PEs.
02-20-2004 03:33 PM
For PE1:
R1#show mpls l2transport vc detail
*Feb 20 19:45:08.862: %SYS-5-CONFIG_I: Configured from console by console
Local interface: Fa1/1.100 up, line protocol up, Eth VLAN 100 up
Destination address: 10.1.1.5, VC ID: 100, VC status: up
Tunnel label: 17, next hop point2point
Output interface: Se3/1:0, imposed label stack {17 22}
Create time: 2d07h, last status change time: 00:12:55
Signaling protocol: LDP, peer 10.1.1.5:0 up
MPLS VC labels: local 17, remote 22
Group ID: local 2, remote 2
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 0, send 0
byte totals: receive 0, send 0
packet drops: receive 0, send 0
R1#show mpls forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
17 Untagged l2ckt(100) 0 Fa1/1.100 point2point
18 Pop tag 10.1.1.4/32 0 Se3/1:0 point2point
19 17 10.1.1.5/32 0 Se3/1:0 point2point
20 Pop tag 192.168.2.0/24 0 Se3/1:0 point2point
R1#show mpls l2transport binding
Destination Address: 10.1.1.5, VC ID: 100
Local Label: 17
Cbit: 1, VC Type: Ethernet, GroupID: 2
MTU: 1500, Interface Desc: n/a
Remote Label: 22
Cbit: 1, VC Type: Ethernet, GroupID: 2
MTU: 1500, Interface Desc: n/a
Destination Address: 192.168.13.4, VC ID: 1
Local Label: 16
Cbit: 1, VC Type: Ethernet, GroupID: 2
MTU: 1500, Interface Desc: n/a
Remote Label: unassigned
for PE2:
r5#show mpls forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
17 Pop tag 192.168.3.0/24 0 Se3/0:0 point2point
18 16 10.1.1.1/32 0 Se3/0:0 point2point
19 Pop tag 10.1.1.4/32 0 Se3/0:0 point2point
22 Untagged l2ckt(100) 0 Fa1/1.100 point2point
r5#show mpls l2transport binding
Destination Address: 10.1.1.1, VC ID: 100
Local Label: 22
Cbit: 1, VC Type: Ethernet, GroupID: 2
MTU: 1500, Interface Desc: n/a
Remote Label: 17
Cbit: 1, VC Type: Ethernet, GroupID: 2
MTU: 1500, Interface Desc: n/a
r5#show mpls l2transport vc detail
Local interface: Fa1/1.100 up, line protocol up, Eth VLAN 100 up
Destination address: 10.1.1.1, VC ID: 100, VC status: up
Tunnel label: 16, next hop point2point
Output interface: Se3/0:0, imposed label stack {16 17}
Create time: 2d07h, last status change time: 00:11:11
Signaling protocol: LDP, peer 10.1.1.1:0 up
MPLS VC labels: local 22, remote 17
Group ID: local 2, remote 2
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 0, send 0
byte totals: receive 0, send 0
packet drops: receive 0, send 0
for P:
r4#show mpls forwarding-table
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
16 Pop tag 10.1.1.1/32 5951 Se1/0:0 point2point
17 Pop tag 10.1.1.5/32 77149 Se1/1:0 point2point
ty in advance
02-20-2004 08:29 PM
This looks good. Have you removed the following commands from FastEthernet1/1.100 on PE1 (also PE2 if configured the same way).
tag-switching mtu 1520
tag-switching ip
Try this and let me know how it goes.
02-27-2004 01:28 PM
We removed this commands from PE1 and PE2
and it still not working.
ty
02-27-2004 07:38 PM
Diego,
After reviewing your configs and the information you sent so far, I'd be tempted to believe that you could be running into a softwre bug. Is this a production environment? Any possibility for you to use another release of code such as 12.2(18)S2?
Let me know,
02-27-2004 07:44 PM
Sorry, I meant 12.2(18)S3.
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