Intial documentation.

Author: Dan Partelly

docs/module/lag.md

@@ -10,6 +10,8 @@ LAG is currently supported on these platforms:
 | --------------------- |:--:|:--:|:--:|:---:|
 | Arista EOS [❗](caveats-eos) | ✅ | ✅ | ✅ | ✅ |
 | Aruba AOS-CX [❗](caveats-aruba) | ✅ | ✅ | ✅ | ✅ |
+| Cisco IOL L2[^iol2] | ✅ | ✅ | ✅ | ❌ |
+| Cisco IOSV L2[^iol2]  | ✅ | ✅ | ✅ | ❌ |
 | Cumulus Linux 4.x     | ✅ | ✅ | ❌  | ❌ |
 | Cumulus 5.x (NVUE)    | ✅ | ✅ | ❌  | ✅ |
 | Dell OS10             | ✅ | ✅ | ✅  | ✅ |
@@ -18,6 +20,7 @@ LAG is currently supported on these platforms:
 | JunOS[^Junos]         | ✅ | ✅ | ✅  | ❌ |
 
 [^Junos]: Includes vSRX, vPTX and vJunos-switch. vJunos-router (and vMX) do not support LAG.
+[^iol2]: Port-Channel interfaces will be treated like physical interfaces. Setting LACP rate is not avilable.
 
 ## Parameters