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Command Reference

Release 11.2 GS

atm sonet

To set the mode of operation and thus control type of the ATM cell used for cell-rate decoupling on

the SONET PLIM, use the atm sonet interface conﬁguration command. To restore the default

Synchronous Transport Signal level 12, concatenated (STS-12c) operation, use the no form of this

command.

atm sonet [stm-4]

no atm sonet [stm-4]

Syntax Description

Default

STS-12c

Command Mode

Interface conﬁguration

Usage Guidelines

This command was modiﬁed in Cisco IOS Release 11.2 GS to add the stm-4 keyword.

Use STM-4 in applications where SDH framing is required.

Use the default (STS-12c) in applications where the ATM switch requires “unassigned cells” for rate

adaptation. An unassigned cell contains 32 zeros.

Example

The following example sets the mode of operation to SONET STM-4 on ATM interface 3/0:

Router(config)# interface atm 3/0

Router(config-if)# atm sonet stm-4

Router(config-if)# end

Router#

stm-4 (Optional) Synchronous Digital Hierarchy/Synchronous Transport

Signal level 4 (SDH/STM-4) operation (ITU-T speciﬁcation).

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