MEF E-line, E-LAN & E-tree services vs MPLS

[Sherif Atef Ahmed Ismail]

Dears

Would like your assistance regarding below plz

I was wondering how MEF  E-line, E-LAN & E-tree services are configured at Cisco ??

What come to my mind is that first we need to have MPLS network then implement these services as below

E-line  ---->> EoMPLS  (AToM)

E-LAN ---->> VPLS

E-Tree ---->> Point-to-Mulipoint Traffic Engineering

So am I correct, or I can configure these services without having MPLS network ???

Many Thanks

Sherif Ismail

[Michalis Milaitis]

Here is the documentation of ASR9K Carrier ethernet model and is a good reference for the cisco Carrier ethernet framework : http://www.cisco.com/en/US/docs/routers/asr9000/software/asr9k_r3.9/lxvpn/configuration/guide/lesc39ethi.html#wp1188343

Cisco Defines three types of services :

• Ethernet Wire Service (EWS), An Ethernet Wire Service is a service that emulates a point-to-point Ethernet segment.
• Ethernet Relay Service (ERS), Ethernet Relay Service is similar to EWS in that it offers point-to-point connectivity. The key differentiation between EWS and ERS is that an ERS uses a VLAN tag to multiplex several, non-same-destination pseudowires to one port.
• Ethernet Multipoint Service (EMS), An Ethernet Multipoint Service (EMS) differs from EWS and ERS in that an EMS provides a multipoint connectivity model. It should be noted that an EMS service definition is still under review within the IETF Virtual Private LAN Service (VPLS) working group.

The MPLS is used to extend your ethernet domain and connect your remote sites or POPs. You can apply these service in a pure metro ethernet domain without MPLS, MPLS is used to expand over your L3 networks through L2VPN technologies!!

[Sherif Atef Ahmed Ismail]

Thanks Michalis

Thats was extermely helpful

Is there a similar link for 7600  ??

I am asking this cause all exmaples I have seen at 7600 uses MPLS (ATOM) .. So If you know how would I configure these services without MPLS @ 7600, I would be grateful

http://www.cisco.com/en/US/docs/net_mgmt/ip_solution_center/4.2/metro_ethernet/user/guide/config.html

Many Thanks

Sherif Ismail

[Michalis Milaitis]

I have made an example with an ethernet virtual circuit that connects two CPEs without mpls and AToM. The config is for 7600 with Ethernet services card (ES or ES+). I've used "local connect" for the connection of the two service instaces. Instead of this you can use bridge-domain and global vlan.

The configuration guide for ES20 is http://www.cisco.com/en/US/docs/routers/7600/install_config/ES20_config_guide/baldcfg.html and for ES+ is http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html .

p.s. If you dont have ES cards you can use switchport interfaces on the 7600 in trunk mode.

[Sherif Atef Ahmed Ismail]

WoW .. great reply

Actually I am new to carrier ethernet and these commands are new to me .. I wonder from where to start

- Anyway, It seems that these commands need to be configured at each device starting from source till destination, correct ?

- Also, If you can share an example for E-LAN without using MPLS, I would be very v.grateful

Appreciate your assistance

Best Regards

Sherif Ismail

[Michalis Milaitis]

Yes you have to provision the vlan from on point to the other. On each node's interfaces you have to configure an ethernet flow point (ie vlan manipulation). For example on a service instance at 7600 you can configure to match one or two vlans and pop one or two vlans.

For multipoint services on 7600 you have to configure all the service instaces which should be communicate under the same bridge domain. It depends on what service you want to deploy, there is not a general configuration guideline for this. For example if you want to have 3 service instances on different interfaces talking together the configuration is :

interface GigabitEthernet1/0/1

service instance 100 ethernet

  encapsulation dot1q 100

   rewrite ingress tag pop 1 symmetric

   bridge-domain 10

!

interface GigabitEthernet1/0/2

service instance 101 ethernet

  encapsulation dot1q 101

   rewrite ingress tag pop 1 symmetric

   bridge-domain 10

!

interface GigabitEthernet10/3

service instance 102 ethernet

  encapsulation dot1q 102

   rewrite ingress tag pop 1 symmetric

   bridge-domain 10

The ethernet services configuration on ES cards is very flexible, you can do vlan translation,1 --> 2 mappings, 2 --> 1 mappings. You can see the details on ES configuration guide http://www.cisco.com/en/US/docs/routers/7600/install_config/ES20_config_guide/baldcfg.html

Best regards,

Michael
.

[Sherif Atef Ahmed Ismail]

Thanks Michael

Your replies were so helpful

My only doubt now is that to configure these commands on each device in path ... it will be v.hectic

Best Regards

Sherif Ismail

[judebryant]

Michalis Milaitis,

I like your drawing, however on the UPE why not use dot1q tunnel.  That way you dont have go globally define all vlans comming from the CPE.  The UPE can define one VLan (outer tag or Service Tag), and all incomming vlans ( inner tag or Customer Tag) gets double tagged.

Also instead of using the bridge-domain command in your service instance, use the xconnect command.  The xconnect command will forward all incoming traffic from one port to another port, vs bridge-domain where you have to globally define the vlan and learn all mac-addressses on the incomming ports. 

However if you need to share more than two ports then bridge-domain is the correct answer.

These two suggestions will save overhead and resources on your devices.

Regards

Jude

[ปลาวาฬทราย RMUTT CPE IX]

I used ME3400 is aggregate and configured policy match vlan.

Police 100M is not work with frame size 80 byte.

The destination received 105M so is exceed over 2%.

I tried upgrade and downgrade all other IOS version for ME3400 from cisco.com is same result. (exceed over 2%)

What should I do, please ?

[Hashiem.croeser]

Hi, can you send a copy of your PMAP?

Sounds like the 100M in your bps cir might be incorrect.

Rgds.

Sent from Cisco Technical Support iPad App

[ปลาวาฬทราย RMUTT CPE IX]

SW-A#sho policy-map int g0/2
GigabitEthernet0/2

  Service-policy input: mef14_vlan4051-2_100mb

    Class-map: vlan_4051 (match-all)
      0 packets
      Match: vlan  4051

      Service-policy : mef14_100mb

        Class-map: class-default (match-any)
          0 packets, 0 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: any       
      police cir 100000000 bc 50000
         conform-action transmit
         exceed-action drop
      conform: 12058350 (packets) exceed: 71540858 (packets)

    Class-map: vlan_4052 (match-all)
      0 packets
      Match: vlan  4052

      Service-policy : mef14_100mb

        Class-map: class-default (match-any)
          0 packets, 0 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: any       
      police cir 100000000 bc 50000
         conform-action transmit
         exceed-action drop
      conform: 15329372 (packets) exceed: 100815697 (packets)

    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
SW-A#

[Hashiem.croeser]

Hi,

Did you explicitly configured the bc of 50000? From my test ME34EG, IOS is calculating a bc of 1000000? Perhaps you can change the bc.

CPT_Test_ME-3400EG-2CS#sh policy-map TEST100

  Policy Map TEST100

    Class class-default

     police cir 100000000 bc 1000000

       conform-action transmit

       exceed-action drop

Also, are you doing a proper RFC 2544 test with test instruments?

Rgds,

[ปลาวาฬทราย RMUTT CPE IX]

Yes, I  explicitly configured the bc is 50000.

policy-map mef14_100mb

class class-default

    police cir 100000000 bc 50000

      conform-action transmit

      exceed-action drop

I can't configure less than this.

SW_A(config-pmap-c)#    police cir 100000000 bc 40000

Conform burst size increased to 50000

I test with frame size 600 or 1500 byte is worked. but, frame size 80 byte is not worked.

[Hashiem.croeser]

Perhaps try an leave it on the IOS calculated default: bc 1000000

Any reason for explicitly to 50000?

Cheers.

[ปลาวาฬทราย RMUTT CPE IX]

Today, I changed to not explicitly (IOS calculated default). It's still not worked (exceed over 2%).