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Operations, Administration, and Management of ATM Interfaces

ATM interfaces support the OAM standards of the ITU, per recommendation I.610. OAM provides VC/VP integrity and fault and performance management. The E-series router supports F4 and F5 ATM OAM fault management, loopback, and continuity check (CC) cells. These cells perform fault detection and notification, loopback testing, and link integrity.

ATM uses F4 and F5 cell flows as follows:

F4—Used in VPs
F5—Used in VCs

ATM interfaces always generate and validate CRC-10 checksums on OAM cells.

For information about configuring OAM on the router, see the following sections:

Configuring OAM
Configuring F5 OAM for Data PVCs

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