Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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Figure 31: OAM Sublayer Interfaces
OAM_CTL.ind OAMPDU.ind
MAC:MA_DATA.req MAC:MA_DATA.ind
OAMPDU.req OAM_CTL.req
g016520
802.3 OAM Client
service interface
802.3 MAC data
service interface
MAC control
MAC
PHY
OAM Client
802.3 MAC data
service interface
MAC:MA_DATA.req
MAC:MA_DATA.ind
OAM Sublayer
MAC Client
The following sections describe the OAM elements:
■
OAM Client on page 232
■
OAM Sublayer on page 232
Related Topics
OAM Feature Overview on page 234
■
■
OAM Messages on page 230
OAM Client
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.
Related Topics
OAM Sublayer on page 232
■
■
OAM Elements Overview on page 231
OAM Sublayer
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.
232 ■
OAM Client
JUNOSe 11.1.x Link Layer Configuration Guide