Oam Client; Oam Sublayer; Figure 31: Oam Sublayer Interfaces - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide
Related Topics

OAM Client

Related Topics

OAM Sublayer

228

Figure 31: OAM Sublayer Interfaces

OAM Client
OAM_CTL.req
802.3 OAM Client
service interface
OAM_CTL.ind
The following sections describe the OAM elements:
OAM Client on page 228
OAM Sublayer on page 228
OAM Feature Overview on page 230
OAM Messages on page 226
The OAM client establishes and manages Ethernet OAM on a link. The OAM client also
enables and configures the OAM sublayer. During the OAM discovery stage, the OAM
client monitors OAM PDUs received from the remote peer and enables OAM functionality
on the link, depending on the local and remote states, and configuration settings. Outside
of the discovery stage, the OAM client manages the rules of response to OAM PDUs and
the OAM remote loopback mode.
OAM Sublayer on page 228
OAM Elements Overview on page 227
The OAM sublayer presents two standard IEEE 802.3 MAC service interfaces: one pointed
toward the superior sublayers, which include the MAC client (or link aggregation), and
the other interface pointed toward the subordinate MAC control sublayer. The OAM
sublayer provides a dedicated interface for transmission of OAM control information and
OAM PDUs to and from a client.
The OAM sublayer is made up of three entities: control block, multiplexer, and packet
parser. The following sections describe each of the entities. Figure 32 on page 229 shows
OAMPDU.req MAC:MA_DATA.req
OAMPDU.ind
OAM Sublayer
MAC:MA_DATA.req MAC:MA_DATA.ind
MAC control
MAC
PHY
MAC Client
802.3 MAC data
service interface
MAC:MA_DATA.ind
802.3 MAC data
service interface
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