Ace ACE-3105, Инструкция по установке и эксплуатации

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ACE-3105, ACE-3205 Ver. 5.2 OAM Modes of Operation over ATM C-1
Appendix C
ATM OAM Functionality
C.1 Introduction
ACE-3105, ACE-3205 provides F4 and F5 ATM OAM support that complies with
ITU-I.610.
The main OAM features of are:
•
Each side of a VP/VC cross-connection (connection point) can be set as an
intermediate or segment endpoint, according to its OAM descriptor.
•
The ATM host or CES connection is set as a VC endpoint (end-to-end or
segment point).
•
A segment endpoint can run a Continuity Check (CC) mechanism per
connection point in Source mode, Sink mode or both.
•
AIS state is declared upon AIS, LOC or physical failure detection, and ends
after no failure is detected for 3.5 seconds.
•
OAM cells are inserted into the cell stream ahead of the shaper.
• OAM loopback cells can be used to determine connectivity at specific points
in a network or between networks, including packet-switched networks on
which ATM traffic is encapsulated.
C.2 OAM Modes of Operation over ATM
There are five modes in which OAM can operate over ATM networks:
• VP Intermediate Point
• VC Intermediate Point
• VP Segment Point
• VC Segment Point
•
VC End-to-End Point
.