MPLS Configuration on Cisco IOS Software

Implementing AToM for Like to Like Circuits

AToM supports the following Layer 2 technologies over MPLS:

• Ethernet

• 802.1Q VLAN

• ATM AAL5 frames

• ATM cells

• Frame Relay

• PPP

• HDLC

In this section, you will configure AToM for the following like to like circuits:

• ATM over MPLS

  - AAL5 over MPLS

  - ATM Cell Relay over MPLS

• Ethernet over MPLS

  - Router-based port mode

  - Router-based VLAN mode

  - Switch-based port mode

  - Switch-based VLAN mode

  - Switch-based Dot1q tunnel mode

• PPP over MPLS

• HDLC over MPLS

• Frame Relay over MPLS

ATM over MPLS

In ATM over MPLS, two modes of encapsulation are supported to transport ATM cells over MPLS:

• AAL5 over MPLS

• ATM Cell Relay over MPLS

AAL5 over MPLS

In AAL5 over MPLS operation, the entire AAL5 frame is encapsulated and label switched across ...