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encapsulation

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

encapsulation (logical interface)

Syntax

encapsulation (atm-ccc-cell-relay | atm-ccc-vc-mux | atm-tcc-vc-mux | atm-cisco-nlpid | atm-mlppp-llc | atm-nlpid | atm-snap | atm-tcc-snap | atm-vc-mux | ether-over-atm-llc | ether-vpls-over-atm-llc | frame-relay-ccc | frame-relay-tcc | multilink-frame-relay-end-to-end | multilink-ppp | vlan-ccc);

Hierarchy Level

[edit interfaces interface-name unit logical-unit-number],
[edit logical-routers logical-router-name 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-mlppp-llc—Use Multilink PPP over ATM adaptation layer 5 (AAL5) logical link control (LLC). This encapsulation type is used only on ATM 2 interfaces. For this encapsulation type, your router must be equipped with a Link Services PIC.

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.

ether-vpls-over-atm-llc—Use Ethernet VPLS over ATM LLC encapsulation. This encapsulation type enables a VPLS instance to support bridging between Ethernet interfaces and ATM interfaces, as described in RFC 2684, Multiprotocol Encapsulation over ATM Adaptation Layer 5. This encapsulation type is used only on ATM 2 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-frame-relay-end-to-end—Use Multilink Frame Relay (MLFR) FRF.15 encapsulation for multilink and link services 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 (physical interface)

Syntax

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

Hierarchy Level

[edit interfaces interface-name],
[edit logical-routers logical-router-name 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).

ethernet-vpls—Use Ethernet Virtual Private LAN Service (VPLS) encapsulation on Ethernet interfaces that have VPLS enabled and that must accept packets carrying standard Tag Protocol ID (TPID) values. On M-series routers, the 4-port Fast Ethernet TX PIC and the 1-port, 2-port, and 4-port, 4-slot Gigabit Ethernet PICs can use the Ethernet VPLS encapsulation type.

extended-vlan-ccc—Use extended virtual local area network (VLAN) encapsulation on CCC circuits with Gigabit Ethernet and 4-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.

extended-vlan-vpls—Use extended VLAN VPLS encapsulation on Ethernet interfaces that have VLAN 802.1Q tagging and VPLS enabled and that must accept packets carrying TPIDs 0x8100, 0x9100, and 0x9901. On M-series routers, the 4-port Fast Ethernet TX PIC and the 1-port, 2-port, and 4-port, 4-slot Gigabit Ethernet PICs can use the Ethernet VPLS encapsulation type.

frame-relay—Use Frame Relay encapsulation.

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

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

multilink-frame-relay-uni-nni—Use only on link services interfaces functioning as FRF.16 bundles and their constituent T1, E1, or NxDS-0 interfaces.

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.

vlan-vpls—Use VLAN VPLS encapsulation on Ethernet interfaces with VLAN tagging and VPLS enabled. Interfaces with VLAN VPLS encapsulation accept packets carrying standard TPID values only. On M-series routers, the 4-port Fast Ethernet TX PIC and the 1-port, 2-port, and 4-port, 4-slot Gigabit Ethernet PICs can use the Ethernet VPLS encapsulation type.

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 (Layer 2 VPN)

Syntax

encapsulation type;

Hierarchy Level

[edit logical-routers logical-router-name routing-instances routing-instance-name protocols l2vpn],
[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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