3Com MSR 50 Frame-length, Ima ima-group, Syntax frame-length 32 64 128 Undo frame-length, 117

117

Use the undo frame-formatcommand to restore the default, that is, CRC4

ADM for ATM E1 interfaces and ESF ADM for ATM T1 interfaces.

ATM Direct Mapping (ADM) directly maps ATM cells transmitted over the E1/T1 line into E1/T1 frames. This process is defined by ITU-T G.804 and ATM forum.

Example # Configure no-CRC4 ADM framing on ATM E1 interface 5/0.

<Sysname> system-view

[Sysname] interface atm 5/0

[Sysname-Atm5/0] frame-format no-crc4-adm

frame-length

Syntax frame-length { 32 64 128 256 }

undo frame-length

View IMA group interface view

Parameter 32, 64, 128, 256: Specifies the number of ATM cells in an IMA frame.

Description Use the frame-lengthcommand to configure the number of ATM cells in an IMA frame.

Use the undo frame-lengthcommand to restore the default, that is, 128 ATM cells in an IMA frame.

Example # Set the number of ATM cells in an IMA frame to 64 on IMA group interface 1.

<Sysname> system-view [Sysname] interface atm 5/0 [Sysname-Atm5/0] ima ima-group 1

[Sysname-Atm5/0] interface ima-group 5/1 [Sysname-Ima-group5/1] frame-length 64

ima ima-group

Syntax ima ima-group group-number

undo ima ima-group

View ATM E1/T1 interface view

Parameter group-number: IMA group number, in the range 1 to 8.

Description Use the ima ima-groupcommand to add an ATM E1/T1 interface to an IMA group. If the specified IMA group does not exist, it is created first.