для Cisco Cisco IOS Software Release 12.0(13)S7
Implementing IPv6 over Frame Relay
Information About Implementing IPv6 over Frame Relay
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OC-48 PoS SPA—Frame Relay
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OC-192 PoS SPA—Frame Relay
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For ingress 1c/1D and nC/nD policies, primary-level hierarchical policing is not supported for IPv6
traffic.
traffic.
Information About Implementing IPv6 over Frame Relay
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Frame Relay Overview
Frame Relay is used as a way to offer multiple service levels for a customer link. The IPv6 over Frame
Relay feature allows users to configure IPv6 addresses over Frame Relay physical interfaces and
subinterfaces on Engine 3 and Engine 5 line cards in Cisco 12000 series Internet routers and to send IPv6
traffic over the Frame Relay interfaces. The supported Frame Relay encapsulations are Cisco Frame
Relay and Internet Engineering Task Force (IETF) Frame Relay.
Relay feature allows users to configure IPv6 addresses over Frame Relay physical interfaces and
subinterfaces on Engine 3 and Engine 5 line cards in Cisco 12000 series Internet routers and to send IPv6
traffic over the Frame Relay interfaces. The supported Frame Relay encapsulations are Cisco Frame
Relay and Internet Engineering Task Force (IETF) Frame Relay.
IPv6 is tunneled over dual-stack MPLS networks (that is, 6PE) on Frame Relay encapsulated links with
QoS and access lists (ACLs) enabled. IPv6 ACLs are supported on Frame Relay encapsulated links in
the same way they are supported in IPv4.
QoS and access lists (ACLs) enabled. IPv6 ACLs are supported on Frame Relay encapsulated links in
the same way they are supported in IPv4.
The IETF Frame Relay encapsulation with network layer protocol ID (NLPID) format uses fast path with
the Engine 3 and Engine 5 line cards.
the Engine 3 and Engine 5 line cards.
Frame Relay Encapsulation on the IPv6 Interface
IPv6 over Frame Relay encapsulation support on Cisco 12000 series Internet routers line cards is
required for service providers (SPs) who offer 6PE service. Frame Relay encapsulation is configured on
the main interface of the supported line cards. Users can configure either Cisco or IETF Frame Relay
encapsulation on the main interface.
required for service providers (SPs) who offer 6PE service. Frame Relay encapsulation is configured on
the main interface of the supported line cards. Users can configure either Cisco or IETF Frame Relay
encapsulation on the main interface.
The Frame Relay encapsulation type set on an interface affects the NLPID in the 4-byte encapsulation
that is added to any packets that egress out of the interface. However, in the ingress direction both
NLPIDs corresponding to the two Frame Relay encapsulations are recognized. Only 10-bit data-link
connection identifier (DLCI) address field packets are recognized.
that is added to any packets that egress out of the interface. However, in the ingress direction both
NLPIDs corresponding to the two Frame Relay encapsulations are recognized. Only 10-bit data-link
connection identifier (DLCI) address field packets are recognized.
Frame Relay Encapsulation on Supported IPv6 Subinterfaces
Frame Relay subinterfaces are supported on the line-card main interfaces configured with Frame Relay
encapsulation. A user can configure a subinterface with a given DLCI.
encapsulation. A user can configure a subinterface with a given DLCI.