What are the most common IMA known issues?
A. The most common IMA known issues are summarized in the table below. Registered CCO users can use the Bug Toolkit (registered customers only) for more details on these bugs. Bug Description CSCdt64050 When the the atm vc-per-vp command is applied to an NM with the intention of modifying the VCI range, the command is accepted on the interface, but the SAR is not updated. This leads to connectivity issues, ping losses, and one way traffic on the ATM VC. This issue is resolved in Cisco IOS® software versions 12.2(4)T, and 12.2(4). CSCdr39332 When a single T1 or E1 link in an Inverse Multiplexing over ATM (IMA) environment has surpassed the differential delay limit on a Cisco 3600 series router, the other “good” T1 or E1 links may become deactivated and the IMA group will run on the single T1 or E1 link with the excess delay. The expected behavior is that the “bad” T1 or E1 link with the added delay will be deactivated and the three “good” T1 or E1 links will remain operational. CSCdr222
