diff --git a/NOTES.md b/NOTES.md
index ca7ae80..071a259 100644
--- a/NOTES.md
+++ b/NOTES.md
@@ -6,3 +6,6 @@ Cannot create VLANs
 Cannot set Egress/Untagged for VLAN 1
 
 Can set VLAN names
+
+SNMPv3 does not support 3DES or AES encryption.
+authProtocol=usmHMACSHAAuthProtocol, privProtocol=usmDESPrivProtocol