Licensing Requirements and Limitations for IMA
Involved Network Elements
None.
Licensing Requirements
IMA is a basic capability of an AR router and is not under license control.
Hardware Requirements
Series |
Feature Support |
|---|---|
AR600, AR1600, AR6100, AR6200, AR6300 Series |
Only the AR6100 series, AR6200 series, and AR6300 series support IMA function. |
Feature Limitations
The 4E1-IMA interface card supports E1-IMA interfaces. For the mapping between the device and interface card, see 4E1-IMA (4-Port-E1 ATM IMA Interface Card) in the NetEngine AR Get to Know the Product-Hardware Description-Cards-E1/T1 Card.
- E1-IMA interfaces and the IMA group do not support IS-IS.
When the router is connected to the peer device through E1-IMA interfaces, one E1-IMA interface must work in master clock mode and the other must work in slave clock mode.
- If devices cannot communicate after an IMA group is configured, run the shutdown and undo shutdown commands in the view of the IMA group that connects the devices.
After the frame-length and ima-standard commands are executed, run the shutdown and undo shutdown commands in the IMA group view to make the configuration take effect.
- Only non-service-configured E1-IMA links can join an IMA group.
- IMA groups can be configured in three modes: symmetric mode and symmetric operation, symmetric mode and asymmetric operation, and asymmetric mode and asymmetric operation. Currently, the device supports symmetric mode and symmetric operation.