ZyXEL Communications xg3700 series User Manual page 385

Table 187 Advanced Application > OAM Status > OAM Details
LABEL DESCRIPTION
Mode This field displays the OAM mode. The device in active mode (typically the service
provider's device) controls the device in passive mode (typically the subscriber's
device).
Active: The port initiates OAM discovery; sends information PDUs; and may send
event notification PDUs, variable request/response PDUs, or loopback control PDUs.
Passive: The port waits for the remote device to initiate OAM discovery; sends
information PDUs; may send event notification PDUs; and may respond to variable
request PDUs or loopback control PDUs.
The Switch might not support some types of PDUs, as indicated in the fields below.
Unidirectional This field indicates whether or not the port can send information PDUs to transmit fault
information when the receive path is non-operational.
Remote loopback This field indicates whether or not the port can use loopback control PDUs to put the
remote device into loopback mode.
Link events This field indicates whether or not the port can interpret link events, such as link fault
and dying gasp. Link events are sent in event notification PDUs and indicate when the
number of errors in a given interval (time, number of frames, number of symbols, or
number of errored frame seconds) exceeds a specified threshold. Organizations may
create organization-specific link event TLVs as well.
Variable retrieval This field indicates whether or not the port can respond to requests for more
information, such as requests for Ethernet counters and statistics, about link events.
Max. OAMPDU This field displays the maximum size of PDU for receipt and delivery.
size
Local Client/Remote
Client
OAM configurations
Link status This field indicates that the link between the Switch port and a connected IEEE
802.3ah-enabled remote Ethernet device is up or down.
Info. revision This field displays the current version of local state and configuration. This two-octet
value starts at zero and increments every time the local state or configuration
changes.
Parser state This field indicates the current state of the parser.
Forward: The port is forwarding packets normally.
Loopback: The port is in loopback mode.
Discard: The port is discarding non-OAMPDUs because it is trying to or has put the
remote device into loopback mode.
Chapter 38 OAM
GS3700/XGS3700 Series User's Guide
385