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encapsulation

You configure three encapsulation types: one for the encapsulation on the physical interfaces, one for the encapsulation on the logical interface, and one for the Layer 2 protocol on the routing instance.

encapsulation (physical interface)

Syntax

encapsulation (atm-ccc-cell-relay | atm-pvc | cisco-hdlc | cisco-hdlc-ccc | cisco-hdlc-tcc |
    ethernet-ccc | frame-relay | frame-relay-ccc | frame-relay-tcc | ppp | ppp-ccc | ppp-tcc |
    vlan-ccc | extended-vlan-ccc);

Hierarchy Level

[edit interfaces interface-name ]

Description

Physical link-layer encapsulation type.

Options

atm-ccc-cell-relay—Use Asynchronous Transfer Mode (ATM) cell relay encapsulation.

atm-pvc—Use ATM permanent virtual connection (PVC) encapsulation.

cisco-hdlc—Use Cisco-compatible High-level Data Link Control (HDLC) framing.

cisco-hdlc-ccc—Use Cisco-compatible HDLC framing on circuit cross-connect (CCC) circuits.

cisco-hdlc-tcc—Use Cisco-compatible HDLC framing on translational cross-connect (TCC) circuits for connecting unlike media.

ethernet-ccc—Use Ethernet CCC encapsulation on Ethernet interfaces that must accept packets carrying standard Tag Protocol ID (TPID) values.

ethernet-tcc—For interfaces that carry Internet Protocol Version 4 (IPv4) traffic, use Ethernet TCC encapsulation on interfaces that must accept packets carrying standard TPID values. Ethernet TCC is not currently supported on Fast Ethernet 48-port Physical Interface Cards (PICs) or the T-series platforms.

extended-vlan-ccc—Use extended virtual local area network (VLAN) encapsulation on CCC circuits with Gigabit Ethernet and four-port Fast Ethernet interfaces that must accept packets carrying 802.1Q values.

extended-vlan-tcc—For interfaces that carry IPv4 traffic, use extended VLAN encapsulation on TCC circuits with Gigabit Ethernet interfaces on which you want to use 802.1Q tagging. Extended Ethernet TCC is not currently supported on Fast Ethernet 48-port PICs or the T-series platforms.

frame-relay—Use Frame Relay encapsulation.

frame-relay-ccc—Use plain Frame Relay encapsulation or Frame Relay encapsulation on CCC circuits.

frame-relay-tcc—Use Frame Relay encapsulation on TCC circuits for connecting unlike media.

ppp—Use serial Point-to-Point Protocol (PPP) encapsulation.

ppp-ccc—Use serial PPP encapsulation on CCC circuits. When you use this encapsulation, you can configure the family ccc only.

ppp-tcc—Use serial PPP encapsulation on TCC circuits for connecting unlike media. When you use this encapsulation, you can configure the family tcc only.

vlan-ccc—Use Ethernet VLAN encapsulation on CCC circuits.

Default

PPP encapsulation.

Usage Guidelines

See Configure CCC Encapsulation on Interfaces or Configure TCC Encapsulation on Interfaces.

Required Privilege Level

interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.

encapsulation (logical interface)

Syntax

encapsulation (atm-ccc-cell-relay | atm-ccc-vc-mux | atm-tcc-vc-mux | atm-cisco-nlpid | atm-nlpid | atm-snap | atm-tcc-snap | atm-vc-mux | ether-over-atm-llc | frame-relay-ccc | frame-relay-tcc | multilink-framerelay | multilink-framerelay-uni-nni | multilink-ppp | vlan-ccc);

Hierarchy Level

[edit interfaces interface-name unit logical-unit-number ]

Description

Logical link-layer encapsulation type.

Options

atm-ccc-cell-relay—Use ATM cell relay encapsulation.

atm-ccc-vc-mux—Use ATM virtual connection (VC) multiplex encapsulation on CCC circuits. When you use this encapsulation, you can configure the family ccc only.

atm-tcc-vc-mux—Use ATM VC multiplex encapsulation on TCC circuits. When you use this encapsulation, you can configure the family tcc only.

atm-cisco-nlpid—Use Cisco ATM NLPID encapsulation. When you use this encapsulation, you can configure the family inet only.

atm-nlpid—Use ATM NLPID encapsulation. When you use this encapsulation, you can configure the family inet only.

atm-snap—Use ATM Subnetwork Access Protocol (SNAP) encapsulation.

atm-tcc-snap—Use ATM SNAP encapsulation on TCC circuits.

atm-vc-mux—Use ATM VC multiplex encapsulation. When you use this encapsulation, you can configure the family inet only.

ether-over-atm-llc—For interfaces that carry IPv4 traffic, use Ethernet over ATM Logical Link Control (LLC) encapsulation. When you use this encapsulation, you cannot configure multipoint interfaces.

frame-relay-ccc—Use Frame Relay encapsulation on CCC circuits. When you use this encapsulation, you can configure the family ccc only.

frame-relay-tcc—Use Frame Relay encapsulation on TCC circuits for connecting unlike media. When you use this encapsulation, you can configure the family tcc only.

multilink-framerelay—Use Multilink Frame Relay (MLFR) FRF.15 encapsulation. This encapsulation is used only on multilink interfaces and their constituent T1 or E1 interfaces.

multilink-ppp—Use Multilink Point-to-Point Protocol (MLPPP) encapsulation. This encapsulation is used only on multilink interfaces and their constituent T1 or E1 interfaces.

vlan-ccc—Use Ethernet VLAN encapsulation on CCC circuits. When you use this encapsulation, you can configure the family ccc only.

Usage Guidelines

See Configure CCC Encapsulation on Interfaces or Configure TCC Encapsulation on Interfaces.

Required Privilege Level

interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.

encapsulation (Layer 2 VPN)

Syntax

encapsulation type

Hierarchy Level

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

Description

Layer 2 protocol used for traffic from the customer edge (CE) router.

Options    

type—The following Layer 2 encapsulation types are supported:

Usage Guidelines

See Configure the Encapsulation Type.

Required Privilege Level

routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.

See also

encapsulation

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