Alcatel-Lucent 7750 SR Manual page 1296

VPRN Service Configuration Commands
oam
Syntax oam
Context config>service>vprn>interface >sap>atm
config>service>vprn>sub-if>grp-if>sap>atm
Description This command enables the context to configure OAM functionality for a PVCC delimiting a SAP.
The ATM-capable MDAs support F5 end-to-end OAM functionality (AIS, RDI, Loopback):
alarm-cells
Syntax [no] alarm-cells
Context config>service>vprn>if>sap>atm>oam
config>service>vprn>sub-if>grp-if>sap>atm>oam
Description
This command configures AIS/RDI fault management on a PVCC. Fault management allows PVCC
termination to monitor and report the status of their connection by propagating fault information
through the network and by driving PVCC's operational status.
When alarm-cells functionality is enabled, a PVCC's operational status is affected when a PVCC goes
into an AIS or RDI state because of an AIS/RDI processing (assuming nothing else affects PVCC's
operational status, for example, if the PVCC goes DOWN, or enters a fault state and comes back UP,
or exits that fault state). RDI cells are generated when PVCC is operationally DOWN. No OAM-
specific SNMP trap is raised whenever an endpoint enters/exits an AIS or RDI state, however, if as
result of an OAM state change, the PVCC changes operational status, then a trap is expected from an
entity the PVCC is associated with (for example a SAP).
The no command disables alarm-cells functionality for a PVCC. When alarm-cells functionality is
disabled, a PVCC's operational status is no longer affected by a PVCC's OAM state changes due to
AIS/RDI processing (note that when alarm-cells is disabled, a PVCC will change operational status to
UP due to alarm-cell processing) and RDI cells are not generated as result of the PVCC going into
AIS or RDI state. The PVCC's OAM status, however, will record OAM faults as described above.
Default
Enabled for PVCCs delimiting VPRN SAPs
Page 1296
• ITU-T Recommendation I.610 - B-ISDN Operation and Maintenance Principles and Functions
version 11/95
• GR-1248-CORE - Generic Requirements for Operations of ATM Network Elements (NEs). Issue
3 June 1996
• GR-1113-CORE - Bellcore, Asynchronous Transfer Mode (ATM) and ATM Adaptation Layer
(AAL) Protocols Generic Requirements, Issue 1, July 1994
7750 SR OS Services Guide