JUNOSe 11.1.0 Release Notes
8
Release Highlights
Ethernet
Support for Configuring 802.3ah OAM Link-Fault Management on Ethernet
Interfaces
JUNOSe Software supports the IEEE 802.3ah standard for Operation,
Administration, and Maintenance (OAM). You can configure IEEE 802.3ah
OAM on Ethernet point-to-point direct links or emulated point-to-point links.
You must enable link-fault management on an interface using the
ethernet
oam lfm
command in Interface Configuration mode to be able to configure link
detection settings.
JUNOSe Software supports the following OAM functionalities:
Discovery—Detects the devices in the network and their OAM capabilities.
This process is triggered automatically when you enable OAM on the
interface.
Link monitoring—Detects and signifies link faults under various conditions
using the Event Notification OAM protocol data unit (PDU), and sends
events to the remote OAM entity when problems are detected on the link.
Remote fault detection—Detects failure conditions that occur in the receive
path of the link and influences the state of the link based on the Event
Notification OAM PDU received from the remote peer.
Remote loopback—Causes the interface of a local entity to receive and
respond to loopback requests from remote peers. Remote loopback mode
ensures link quality between the router and a remote peer.
The following line module combinations on E Series routers support the
802.3ah OAM link-fault management feature:
ES2 4G line module combinations on the E120 router and the E320 router:
ES2 4G line modules with ES2-S1 GE-8 IOA
ES2 4G line modules with ES2-S1 GE-4 IOA
ES2 4G line modules with ES2-S1 10GE IOA
GE-2 and GE-HDE line module combinations on ERX14xx models, ERX7xx
models, and the ERX310 router:
GE-2 and GE-HDE line modules with GE-2 SFP I/O module
GE-HDE line modules with GE-8 I/O module
In addition, the following log event categories have been added to support the
OAM link-fault management feature:
NOTE:
Because the hysteresis mechanism is not available in JUNOSe Software
Release 11.1.0, an OAM session can terminate unexpectedly.