Chapter 39 OAM
GS2220 Series User’s Guide
347
C HAPTER 39
O AM
39.1 O AM O ve rvie w
Link layer Ethernet OAM (Operations, Administration and Maintenance) as described in IEEE 802.3ah is a
link monitoring protocol. It utilizes OAM Protocol Data Units or OAM PDUs to transmit link status
information between directly connected Ethernet devices. Both devices must support IEEE 802.3ah.
Because link layer Ethernet OAM operates at layer two of the OSI (Open Systems Interconnection Basic
Reference) model, neither IP or SNMP are necessary to monitor or troubleshoot network connection
problems.
The Switch supports the following IEEE 802.3ah features:
• Discovery – this identifies the devices on each end of the Ethernet link and their OAM configuration.
• Remote Loopback – this can initiate a loopback test between Ethernet devices.
39.1.1 Wha t You C a n Do
• Use the O AM Sta tus screen (
Section 39.2 on page 347) to view the configuration of ports on which
Ethernet OAM is enabled.
• Use the O AM Config ura tio n screen (Section 39.3 on page 351) to enable Ethernet OAM on the Switch.
• Use the O AM Re m o te Loo pba c k screen (
Section 39.4 on page 353) to perform remote-loopback tests.
39.2 O AM Sta tus
Use this screen to view the configuration of ports on which Ethernet OAM is enabled. Click Adva nc e d
Applic a tio n > OAM in the navigation panel.