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New Member

CFM

My goal is to be able to see the performance of the customers vlan on the ME3400 through the network. I have been unable to get this to work in my lab. Does anyone have a sample of this that could help me out? I have opened a Case with cisco, but havent gotten far either.. I do have a 3750 in the middle between these two, but dont have anything setup on it, other than allowing the vlans to pass between the ports of course...

ethernet cfm domain PROVIDER level 7

ethernet cfm domain CUSTOMER level 4

service 201 vlan 201

ethernet cfm enable

ip sla 201

ethernet jitter mpid 201 domain CUSTOMER vlan 201

ip sla schedule 201 life forever start-time now

int gig0/1

Description Customer Port

ethernet cfm mip level 7

ethernet cfm mep level 4 mpid 201 vlan 201

interface GigabitEthernet0/4

port-type nni

switchport mode trunk

ethernet cfm mip level 7

ethernet cfm cc enable level 0-7 vlan 1-4095

ME3400-LAB2# show ethernet cfm maintenance-points local

MPID DomainName Level Type VLAN Port CC-Status MAC

201 CUSTOMER 4 MEP I 201 Gi0/1 Enabled 0023.ac5c.aa80

Level Type Port MAC

7 MIP Gi0/4 0023.ac5c.aa80

7 MIP Gi0/1 0023.ac5c.aa80

ME3400-LAB2# show ethernet cfm maintenance-points remote

Total Remote MEPs: 0

ME3400-LAB2#

==========

ethernet cfm domain PROVIDER level 7

ethernet cfm domain CUSTOMER level 4

service 201 vlan 201

ethernet cfm enable

IP SLA RESPONDER

interface FastEthernet0/16

Description Customer Port

switchport access vlan 201

ethernet cfm mip level 7

ethernet cfm mep level 4 mpid 201 vlan 201

interface GigabitEthernet0/1

description to 3750

port-type nni

switchport mode trunk

ethernet cfm mip level 7

ethernet cfm cc enable level 0-7 vlan 1-4095

ME3400-LAB1#show ethernet cfm maintenance-points local

MPID DomainName Level Type VLAN Port CC-Status MAC

201 CUSTOMER 4 MEP I 201 Fa0/16 Enabled 0016.9d26.6180

Level Type Port MAC

7 MIP Gi0/1 0016.9d26.6180

7 MIP Fa0/16 0016.9d26.6180

ME3400-LAB1#show ethernet cfm maintenance-points remote

Total Remote MEPs: 0

6 REPLIES
Silver

Re: CFM

You use VLAN configuration mode, accessed by entering the vlan global configuration command to create VLANs and to modify some parameters. You use the interface configuration mode to define the port membership mode and to add and remove ports from VLANs. The results of these commands are written to the running-configuration file, and you can display the file by entering the show running-config privileged EXEC command.

The below URL helps you in configuring the VLAN in ME3400:

http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_25_ex/configuration/guide/swvlan.html#wp1150876

New Member

Re: CFM

I dont think this has anything to do with what I am trying to accomplish.

The vlans have already been created, and assigned to their respective interfaces. I am trying to look at the SLA performance of the customers vlan through my network end to end.

Cisco Employee

Re: CFM

The problem is that your not seeing the remote MEPs.

There are special multicast packets that should flow between the MEP points and they should see eachother, sort of like CDP neighbors.

Work with TAC more closely is my best next step. These issues require a lot of troubleshoot with sniffer traces, bug scrubbing, etc since ethernet CFM is such a young protocol.

Some of our platforms only support Cisco Proprietary CFM, but I am fairly certain that ME3400 supports IEEE.

Again, wireshark is your best friend you need to figure out if the handshake mechanism between to the MEPs is happening, or if something is blocking it.

New Member

Re: CFM

Thanks, still have the case open with Cisco and it has been escalated. The middle device between the ME3400's is a 3750. As far as we can all tell, multicast packets should be able to flow through. Unless there is something specific that needs to be turned on to allow these special "multicast" packets through...

Will attempt some wireshark captures and see what comes up.

New Member

Re: CFM

It was a config error on the devices. Multicast is working just fine...

Here is a simple point to point I have running (ME to ME) Find and Replace 301 with vlan you need. You can then do a "show ip sla stat" and see the results of the vlan going through your network.

Switch One:

ethernet cfm domain PROVIDER level 7

ethernet CFM domain CUSTOMER level 4

service service-vlan301 vlan 301

mep crosscheck mpid 3011 vlan 301

ethernet cfm enable

ethernet cfm traceroute cache

!

interface gig0/1

ethernet cfm mip level 7

ethernet cfm mep level 4 mpid 3012 vlan 301

!

interface gig0/4

ethernet cfm mip level 4

!

ethernet cfm cc enable level any vlan 301

ip sla 301

ethernet jitter mpid 3011 domain CUSTOMER vlan 301

ip sla schedule 301 life forever start-time now

exit

ethernet cfm mep crosscheck enable level any vlan 301

Switch Two:

ethernet cfm domain PROVIDER level 7

ethernet CFM domain CUSTOMER level 4

service service-vlan301 vlan 301

mep crosscheck mpid 3012 vlan 301

ethernet cfm enable

ethernet cfm traceroute cache

!

interface gig0/1

ethernet cfm mip level 7

ethernet cfm mep level 4 mpid 3011 vlan 301

!

interface gig0/4

ethernet cfm mip level 4

!

ethernet cfm cc enable level any vlan 301

ip sla 301

ethernet jitter mpid 3012 domain CUSTOMER vlan 301

ip sla schedule 301 life forever start-time now

exit

ethernet cfm mep crosscheck enable level any vlan 301

New Member

Re: CFM

Hi,

Have you ever tested the same configuration using CFM over Bridge-domain, on 7600 Es20+?

I tried the configuration you suggest between Switch one (7600 Es20+) and switch two (3750 Metro), and it's fine. But the configuration of 7600 port is "switchport", now i need to configure CFM on service instance and bridge domain.

Thanks

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