VLL Services
7705 SAR OS Services Guide Page 159
Ethernet VLL (Epipe) Services
This section provides information about the Epipe service.
Topics in this section include:
• Epipe Service Overview
→ Ethernet Access Egress Queuing and Scheduling
→ Ethernet SAP-to-SAP
→ Ethernet OAM
→ Control Word
→ MTU
→ Raw and Tagged Modes
→ IP Filters
Epipe configuration information is found under the following topics:
• Common Configuration Tasks on page 198
• Configuring VLL Components on page 199
→ Creating an Epipe Service on page 207
• Service Management Tasks on page 221
Epipe Service Overview
An Ethernet pseudowire (PW) is used to carry Ethernet/802.3 protocol data units (PDUs)
over an MPLS or IP network, allowing service providers to offer emulated Ethernet services
over existing MPLS or IP networks. For the 7705 SAR, Ethernet emulation is a point-to-
point service.
The 7705 SAR uses Ethernet VLLs to carry Ethernet traffic from various sources at a site,
including traffic such as e911 locators, power supply probes, and HSPA-dedicated
interfaces. Native Ethernet bridging is not supported.
An MPLS Epipe service is the Alcatel-Lucent implementation of an Ethernet VLL based on
the IETF RFC 4448, Encapsulation Methods for Transport of Ethernet over MPLS
Networks.
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