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Basic Concept of Xconnect in the case of AToM

Hello

What is the basic concept of Xconnect in the case of AToM?

How AToM can be implemented in the live networks? What are the issues that can faced in the AToM technology?

I am unavair of this concept as i need to start this topic, Pls help me out how can i start to implement this?

Thanxs in advance for guiding me....

Regards!!!

Inderdeep

2 ACCEPTED SOLUTIONS

Accepted Solutions
Silver

Re: Basic Concept of Xconnect in the case of AToM

Hi Inder

You could also get good information from given link

http://www.mplsvpn.info/search/label/L2VPN

regards

Shivlu Jain         

Re: Basic Concept of Xconnect in the case of AToM

Hi,

AToM is the way of carrying layer-2 protocols over MPLS. these layer-2 protocols are , Ethernet , HDLC , PPP , Frame-relay, and ATM.

The L2VPN is carried in point to point fashion and its TTL value always set to 2 , the top label is the tunnel label and the inner label is always going to be the VC label

VPLS is carried in point to multipoint fashion and its TTL value alwys set  to 255.

Ethernet Over MPLS allows CDP,STP, and VTP to be tunneled over MPLS.

Ethernet Over MPLS has two Modes:

1- Port Mode

2- Vlan Mode

Besides what others has suggested, Bellow is one excellent resource:

---  Layer 2 VPN Architecture (Cisco press)

HTH

Mohamed

6 REPLIES
Hall of Fame Super Silver

Re: Basic Concept of Xconnect in the case of AToM

Community Member

Re: Basic Concept of Xconnect in the case of AToM

Thanxs for sharing your knowledge....

Regards

Inderdeep

http://www.networksbaseline.in/

Silver

Re: Basic Concept of Xconnect in the case of AToM

Hi Inder

You could also get good information from given link

http://www.mplsvpn.info/search/label/L2VPN

regards

Shivlu Jain         

Re: Basic Concept of Xconnect in the case of AToM

Hi Indeer

Please find the attach sample config. Were you can get an good idea to cofigure AToM.

& also please refer the below link were you can learn more about AToM.

http://fengnet.com/book/MPLS%20Configuration%20on%20Cisco%20IOS%20Software/ch11.html

Regards

Chetan Kumar

Community Member

Re: Basic Concept of Xconnect in the case of AToM

Thanxs shivlu and chetan...

Cheers!!!

Inderdeep

http://www.networksbaseline.in/

Re: Basic Concept of Xconnect in the case of AToM

Hi,

AToM is the way of carrying layer-2 protocols over MPLS. these layer-2 protocols are , Ethernet , HDLC , PPP , Frame-relay, and ATM.

The L2VPN is carried in point to point fashion and its TTL value always set to 2 , the top label is the tunnel label and the inner label is always going to be the VC label

VPLS is carried in point to multipoint fashion and its TTL value alwys set  to 255.

Ethernet Over MPLS allows CDP,STP, and VTP to be tunneled over MPLS.

Ethernet Over MPLS has two Modes:

1- Port Mode

2- Vlan Mode

Besides what others has suggested, Bellow is one excellent resource:

---  Layer 2 VPN Architecture (Cisco press)

HTH

Mohamed

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