Cisco Cisco IOS Software Release 12.0(23)S

If ATM OAM traffic reduction is enabled on routers R1 and R2, then because of the random nature of 
the traffic reduction algorithm, either router can initiate OAM command cells and the other router will 
have to listen to the incoming OAM command cells.

If this feature is enabled on only one router (R1, for example), then the frequency of that router must be 
greater than or equal to the interval frequency set in the other router (R2) in order for router R1 to stop 
sending OAM command cells.

The ATM OAM Traffic Reduction feature is enabled by the oam-pvc command. When the optimum 
keyword is enabled, and when a change in the interval frequency of router R2 is detected, the VC initiates 
an OAM command cell from router R1 and does not go into the Retry mode immediately. If no response 
is obtained, the VC goes into the Retry mode and follows the OAM Retry procedure.

This section contains the following procedures.

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To configure ATM OAM traffic reduction on an ATM interface, use the following commands.

configure terminal

interface atm interface-number

pvc interface-number

oam-pvc [manage] [frequency] [auto-detect [optimum]]