3com MSR 20-20 참조 매뉴얼

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HAPTER

 2: IMA-E1/T1 I

NTERFACE

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ONFIGURATION

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OMMANDS

Use the undo ima ima-group command to remove an interface from an IMA 
group.

By default, no IMA group is created.

Before adding an ATM E1/T1 interface to an IMA group, you need to remove the 
network layer service-related configurations of the interface. for example, the IP 
address assigned to the interface by using the undo ip address command.

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# Add the link of ATM E1 interface 5/0 to IMA group 1.

<Sysname> system-view

[Sysname] interface atm 5/0

[Sysname-Atm5/0] ima ima-group 1 

ima-clock { ctc [ link-number number ] | itc }

IMA group interface view

ctc: Common transmit clock configuration. In this mode, all links in the IMA group 
share the same clock source, which can be an external clock or the one extracted 
from a member link.

link-number number: Number of the E1/T1 link that provides the clock source. It 
ranges from 0 to 7.

itc: Independent transmit clock configuration. In this mode, the links in the IMA 
group use at least two clock sources.

Use the ima-clock command to configure the clock mode of the IMA group.

Use the undo ima-clock command to restore the default, that is, CTC.

When the IMA group adopts ITC mode, you must set the clock mode of each 
member ATM E1/T1 link to slave with the clock slave command.

When the IMA group adopts CTC mode, you must set the clock mode of each 
member ATM E1/T1 link to master with the clock master command.

# Set the clock mode to ITC on IMA group 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] ima-clock itc