Configuring Ima Group Interface Clock Mode - Cisco Catalyst 8540 MSR Configuration Manual

Configuring IMA Group Parameters
Example
The following example shows the IMA group interface minimum active links configuration:
SwitchA# show ima interface
ATM0/0/ima1 is up
IMA Group Current Configuration:
IMA Link Information:
Link
-----
ATM0/0/2
ATM0/0/3
ATM0/0/4
ATM0/0/5

Configuring IMA Group Interface Clock Mode

The links configured as part of a IMA group interface can derive their clocking from one single clock
source using common transmit clocking (CTC) mode, or the link clocking can be derived individually
from different clock sources using independent transmit clocking (ITC) mode. For example, if three
interfaces are configured as members of an IMA group interface, one can be configured to use the
reference clock, and the remaining links can derive their clocking from the local oscillator.
To configure the clocking mode on the IMA group, perform the following steps, beginning in global
configuration mode:
Command
Step 1 Switch(config)# interface atm card/subcard/imagroup
Switch(config-if)#
Step 2
Switch(config-if)# ima clock-mode {common |
independent}
Example
The following example shows how to configure the IMA group clocking mode as independent:
SwitchA(config)# interface atm 0/0/ima1
SwitchA(config-if)# ima clock-mode independent
ATM Switch Router Software Configuration Guide
21-14
Group Index = 5
State: NearEnd = operational, FarEnd = operational
FailureStatus = noFailure
MinNumTxLinks = 3 MinNumRxLinks = 3
DiffDelayMax = 25 FrameLength
NeTxClkMode = common(ctc)
TestLink = 2
TestProcStatus = disabled
Physical Status
---------------
up
up
up
up
Chapter 21
= 128
CTC_Reference_Link = ATM0/0/2
Testpattern = Not Specified
GTSM change timestamp = 990427165502
NearEnd Rx Status
-----------------
active
active
active
active
Purpose
Specifies the IMA group to configure and
enters interface configuration mode.
Specifies the transmit clock mode for the IMA
group.
Configuring IMA Port Adapter Interfaces
Test Status
---------------
disabled
disabled
disabled
disabled
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