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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter
Configuring the Clock Source
Possible errors are
• IMA group is not yet enabled
• One of the parameters is invalid
Resilient Link—Maximum number of T1/E1 links within the AIM group that can go down and the AIM
group will still remain active.
In the following example, the number of resilient link is changed to 2 and the differential delay to
100 ms. Enter the following command:
cnfaimgrp 1 100 2
Display the AIM Group
The command is dspaimgrp group number.
AXIS18.1.13.IMATM.a > dspaimgrp 1
Sample Display
IMA Group number : 1
Port type : UNI
Lines configured : 1.2.3
Enable : Modify
IMA Group state : Active
Port Speed (cells/sec) : 13476
LcpCellsPeriodicity(cells) : 128
LcpDelayTolerance (IMA frames) : 1
ReadPtrWrPtrDiff (cells) : 4
NumResiliency : 2 /* Resilient links */
MaxTolerableDiffDelay (msec) : 100 /* Diff delay tolerable */
Lines Present : 1.2.3
Remote IMA id : 0x33
Local IMA id : 0x33 /* The aim group is
Observed Diff delay (msec) : 0 in loopback, and hence
local/remote id is same. */
Syntax : dspimagrp (or dspaimgrp) "imagroup_number"
IMA group number -- value ranging from 1 to 8
Explanation of some of the parameters:
Local AIMUX ID—Indicates the IMA-ID in use at the local end.
Used in AIM state machine to communicate with the other side entity.
Remote AIMUX ID—Indicates the IMA-ID in use at the remote end.
Observed Diff delay—The observed differential delay is between the two different physical links in the
IMA group.