EoMPLS configuration

[diegomacedo]

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?

[Harold Ritter]

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.

[diegomacedo]

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

[Harold Ritter]

A couple of questions for you.

What platform is this?

What IOS version?

Could post a copy of the PE configs.

Thanks,

[diegomacedo]

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

[Harold Ritter]

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.

[diegomacedo]

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.

[Harold Ritter]

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.

[diegomacedo]

PE1 and PE2 : 12.2(14)S

and P : 12.3(5)

ty

[Harold Ritter]

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.

[diegomacedo]

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

[Harold Ritter]

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.

[diegomacedo]

We removed this commands from PE1 and PE2

and it still not working.

ty

[Harold Ritter]

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,

[Harold Ritter]

Sorry, I meant 12.2(18)S3.