Configure the Encapsulation Type

The encapsulation type you configure at each Layer 2 VPN site varies depending on which Layer 2 protocol you choose to configure. You need to use the same protocol at each Layer 2 VPN site if you configure ethernet-vlan as the encapsulation type. You do not need to use the same protocol at each Layer 2 VPN site if you configure any of the following encapsulation types:

• atm-aal5—ATM Adaptation Layer (AAL/5)
• atm-cell—ATM cell
• cisco-hdlc—Cisco Systems-compatible High-level Data Link Control (HDLC)
• ethernet—Ethernet
• ethernet-vlan—Ethernet VLAN
• frame-relay—Frame Relay
• interworking—Layer 2.5 interworking VPN
• ppp—Point-to-Point Protocol (PPP)

Note that if you configure different protocols at your Layer 2 VPN sites, you need to configure a TCC encapsulation type. For more information, see Configure TCC Encapsulation on Interfaces.

To configure the Layer 2 protocol accepted by the PE router, specify the encapsulation type by including the encapsulation statement at the [edit routing-instances routing-instance-name protocols l2vpn] hierarchy level:

[edit routing-instances routing-instance-name protocols l2vpn]

encapsulation type