IRM-1100 Expansion Module on the Compute Side
The IR1101 has two attachment points for expansion modules. The top side of the router is referred to as the Expansion side. The bottom side of the router is referred to as the Compute side.
Prior to IOS XE release 17.7.1, support was only on the Expansion side.
Starting with the 17.7.1 release, additional modules can be connected on the Compute side.
Features and Limitations
The following apply to the IRM-1100 with release 17.7.1:
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Switchports will not work if anything is connected on the Compute side
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MSATA and GPIO Pins for IRM-1100-SPMI are not supported when it is connected to the Compute side (bottom) for 17.7.1
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The IR1101 can only support a maximum of two LTE interfaces. Connecting an IRM-1100 on both sides is not supported. If connected in this configuration, only the Expansion side will be active.
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LTE interfaces when connected on Compute side, are enumerated cellular 0/4/0 and cellular 0/4/1
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CAT18 LTE module is not supported on the Compute side.
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Only the LTE interface functions when the IRM-1100-SP or IRM-1100-SPMI is connected on the Compute side.