Eth-Cfm Oampdu - Alcatel-Lucent 7705 Service Manual

VLAN/dot1p
This is the VLAN dot1p identifier. If null encapsulation is configured (for Ethernet SAPs or
spoke SDP bindings to a VC-type, ether or vlan), the frame is tagged with NULL.

ETH-CFM OAMPDU

The contents of the Ethernet OAMPDU depend on whether dot1ag or Y.1731 standards are
being used. For details on the dot1ag or Y.1731 OAMPDU, see
FCS
This is the frame check sequence field.
ETH-CFM OAMPDU
As shown in
7705 SAR OS Services Guide
Figure 11, each ETH-CFM OAMPDU message contains the following fields:
• MD level or MEG level: user-configured value, 0 to 7
• version: current version is 0
• opcodes: as defined in IEEE 802.1ag and Y.1731 standards, for messages such as:
→ Continuity Check Message (CCM)
→ Loopback Message (LBM)
→ Loopback Reply (LBR)
→ Linktrace Message (LTM)
→ Linktrace Reply (LTR)
• flags: as defined in IEEE 802.1ag and Y.1731 standards
• one or more TLVs, which include:
→ End TLV
→ Data TLV
→ Reply Ingress TLV
→ Reply Egress TLV
→ LTM egress identifier TLV
→ LTR egress identifier TLV
→ Test TLV
Services Overview
ETH-CFM OAMPDU.
Page 65