diff --git a/assets/platforms/cumulus_linux.yaml b/assets/platforms/cumulus_linux.yaml
new file mode 100644
index 0000000..148e0b9
--- /dev/null
+++ b/assets/platforms/cumulus_linux.yaml
@@ -0,0 +1,66 @@
+---
+platform-type: 'cumulus_linux'
+default:
+  driver-type: "network"
+  privilege-levels:
+    exec:
+      name: "exec"
+      pattern: '(?im)^\S+@\S+:\S+:\S+\$\s*$'
+      previous-priv:
+      deescalate:
+      escalate:
+      escalate-auth: false
+      escalate-prompt:
+    configuration:
+      name: "configuration"
+      pattern: '(?im)^\S+@\S+:\S+:\S+#\s*$'
+      previous-priv: "exec"
+      deescalate: "exit"
+      escalate: "sudo su"
+      escalate-auth: true
+      escalate-prompt: ": "
+  default-desired-privilege-level: "exec"
+  failed-when-contains:
+    - "Permission denied"
+    - "ERROR:"
+    - "command not found"
+  textfsm-platform: ""
+  network-on-open:
+    - operation: "acquire-priv"
+  network-on-close:
+    - operation: "acquire-priv"
+    - operation: "channel.write"
+      input: "exit"
+    - operation: "channel.return"
+variants:
+  root_login:
+    driver-type: "network"
+    privilege-levels:
+      exec:
+        name: "exec"
+        pattern: '(?im)^\S+@\S+:\S+:\S+#\s*$'
+        previous-priv:
+        deescalate:
+        escalate:
+        escalate-auth: false
+        escalate-prompt: ": "
+      configuration:
+        name: "configuration"
+        pattern: '(?im)^\S+@\S+:\S+:\S+#\s*$'
+        previous-priv: exec
+        deescalate:
+        escalate:
+        escalate-auth: false
+        escalate-prompt:
+    default-desired-privilege-level: "exec"
+    failed-when-contains:
+      - "Permission denied"
+      - "ERROR:"
+    textfsm-platform: ""
+    network-on-open:
+      - operation: "acquire-priv"
+    network-on-close:
+      - operation: "acquire-priv"
+      - operation: "channel.write"
+        input: "exit"
+      - operation: "channel.return"
diff --git a/assets/platforms/cumulus_vtysh.yaml b/assets/platforms/cumulus_vtysh.yaml
new file mode 100644
index 0000000..94e914e
--- /dev/null
+++ b/assets/platforms/cumulus_vtysh.yaml
@@ -0,0 +1,43 @@
+---
+platform-type: 'cumulus_vtysh'
+default:
+  driver-type: "network"
+  privilege-levels:
+    linux:
+      name: "linux"
+      pattern: '(?im)^\S+@\S+:\S+:\S+[\$|#]\s*$'
+      previous-priv:
+      deescalate:
+      escalate:
+      escalate-auth: false
+      escalate-prompt:
+    exec:
+      name: "exec"
+      pattern: '(?im)^[\w\.\-]+#\s*$'
+      previous-priv: "linux"
+      deescalate: "exit"
+      escalate: "vtysh"
+      escalate-auth: false
+      escalate-prompt:
+    configuration:
+      name: "configuration"
+      pattern: '(?im)^[\w\.\-]+\(config\)#\s*$'
+      previous-priv: "exec"
+      deescalate: "exit"
+      escalate: "configure terminal"
+      escalate-auth: false
+      escalate-prompt:
+  default-desired-privilege-level: "exec"
+  failed-when-contains:
+    - "Permission denied"
+    - "ERROR:"
+    - "% Unknown command"
+    - "% Command incomplete"
+  textfsm-platform: ""
+  network-on-open:
+    - operation: "acquire-priv"
+  network-on-close:
+    - operation: "acquire-priv"
+    - operation: "channel.write"
+      input: "exit"
+    - operation: "channel.return"
diff --git a/driver/generic/driver_test.go b/driver/generic/driver_test.go
index 7edfda3..d3241f7 100644
--- a/driver/generic/driver_test.go
+++ b/driver/generic/driver_test.go
@@ -82,6 +82,12 @@ func prepareDriver(
 		options.WithFileTransportFile(resolveFile(t, payloadFile)),
 		options.WithTransportReadSize(1),
 		options.WithReadDelay(0),
+		options.WithFailedWhenContains([]string{
+			"% Ambiguous command",
+			"% Incomplete command",
+			"% Invalid input detected",
+			"% Unknown command",
+		}),
 	)
 	if err != nil {
 		t.Errorf("%s: encountered error creating generic Driver, error: %s", testName, err)
diff --git a/driver/generic/sendcommand_test.go b/driver/generic/sendcommand_test.go
index 0ff93e4..a11ca08 100644
--- a/driver/generic/sendcommand_test.go
+++ b/driver/generic/sendcommand_test.go
@@ -83,3 +83,41 @@ func TestSendCommand(t *testing.T) {
 		t.Run(testName, f)
 	}
 }
+
+func testSendCommandFails(testName string, testCase *sendCommandTestCase) func(t *testing.T) {
+	return func(t *testing.T) {
+		t.Logf("%s: starting", testName)
+
+		d, _ := prepareDriver(t, testName, testCase.payloadFile)
+
+		r, err := d.SendCommand(testCase.command)
+		if err != nil {
+			t.Fatalf("%s: response object indicates failure",
+				testName)
+		}
+
+		if r.Failed == nil {
+			t.Fatalf(
+				"%s: expected r.Failed to be set",
+				testName,
+			)
+		}
+	}
+}
+
+func TestSendCommandFails(t *testing.T) {
+	cases := map[string]*sendCommandTestCase{
+		"send-command-failure-simple": {
+			description: "simple send command failure test",
+			command:     "thiscommandshouldfail",
+			payloadFile: "send-command-failure-simple.txt",
+			stripPrompt: false,
+			eager:       false,
+		},
+	}
+
+	for testName, testCase := range cases {
+		f := testSendCommandFails(testName, testCase)
+		t.Run(testName, f)
+	}
+}
diff --git a/driver/generic/test-fixtures/golden/send-commands-failure-simple-in.txt b/driver/generic/test-fixtures/golden/send-commands-failure-simple-in.txt
new file mode 100644
index 0000000..d41b70a
--- /dev/null
+++ b/driver/generic/test-fixtures/golden/send-commands-failure-simple-in.txt
@@ -0,0 +1,2 @@
+thiscommandshouldfail
+
diff --git a/driver/generic/test-fixtures/golden/send-commands-failure-simple-out.txt b/driver/generic/test-fixtures/golden/send-commands-failure-simple-out.txt
new file mode 100644
index 0000000..8ec4e0f
--- /dev/null
+++ b/driver/generic/test-fixtures/golden/send-commands-failure-simple-out.txt
@@ -0,0 +1 @@
+% Unknown command or computer name, or unable to find computer address
diff --git a/driver/generic/test-fixtures/send-command-failure-simple.txt b/driver/generic/test-fixtures/send-command-failure-simple.txt
new file mode 100644
index 0000000..101c328
--- /dev/null
+++ b/driver/generic/test-fixtures/send-command-failure-simple.txt
@@ -0,0 +1,3 @@
+C3560CX#thiscommandshouldfail
+% Unknown command or computer name, or unable to find computer address
+C3560CX#
\ No newline at end of file
diff --git a/examples/generic_driver/basics/main.go b/examples/generic_driver/basics/main.go
index b860951..2d0ddcd 100644
--- a/examples/generic_driver/basics/main.go
+++ b/examples/generic_driver/basics/main.go
@@ -66,6 +66,7 @@ func main() {
 
 	// note that there is a convenience wrapper around send interactive in the generic driver as
 	// well, so you could simply do `d.SendInteractive` here rather than poking the channel directly
+	// remember to refer to `.Result` object in that case
 	interactiveOutput, err := d.Channel.SendInteractive(events)
 	if err != nil {
 		fmt.Printf("failed to send interactive input to device; error: %+v\n", err)
@@ -84,6 +85,10 @@ func main() {
 		fmt.Printf("failed to send command; error: %+v\n", err)
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response objects indicates failure: %+v\n", r.Failed)
+		return
+	}
 
 	fmt.Printf(
 		"sent command '%s', output received (SendCommand):\n %s\n\n\n",
diff --git a/examples/generic_driver/custom_logging/main.go b/examples/generic_driver/custom_logging/main.go
index 3a4146d..88731d9 100644
--- a/examples/generic_driver/custom_logging/main.go
+++ b/examples/generic_driver/custom_logging/main.go
@@ -61,6 +61,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("got some output: %s\n\n\n", r.Result)
 }
diff --git a/examples/generic_driver/default_logging/main.go b/examples/generic_driver/default_logging/main.go
index 3884b32..fc48d14 100644
--- a/examples/generic_driver/default_logging/main.go
+++ b/examples/generic_driver/default_logging/main.go
@@ -37,6 +37,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("got some output: %s\n\n\n", r.Result)
 }
diff --git a/examples/generic_driver/interactive_prompts/main.go b/examples/generic_driver/interactive_prompts/main.go
index 82ec9b9..6b0fb1e 100644
--- a/examples/generic_driver/interactive_prompts/main.go
+++ b/examples/generic_driver/interactive_prompts/main.go
@@ -50,6 +50,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("interact response:\n%s\n", r.Result)
 }
diff --git a/examples/generic_driver/textfsm_integration/main.go b/examples/generic_driver/textfsm_integration/main.go
index 2661ee8..05e1ee1 100644
--- a/examples/generic_driver/textfsm_integration/main.go
+++ b/examples/generic_driver/textfsm_integration/main.go
@@ -44,6 +44,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	parsedOut, err := r.TextFsmParse(*arg)
 	if err != nil {
diff --git a/examples/netconf_driver/basics/main.go b/examples/netconf_driver/basics/main.go
index d258422..1839dab 100644
--- a/examples/netconf_driver/basics/main.go
+++ b/examples/netconf_driver/basics/main.go
@@ -36,6 +36,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("Config result: %s", r.Result)
 }
diff --git a/examples/network_driver/basics/main.go b/examples/network_driver/basics/main.go
index 950385d..a62ffdf 100644
--- a/examples/network_driver/basics/main.go
+++ b/examples/network_driver/basics/main.go
@@ -103,6 +103,11 @@ func main() {
 
 		return
 	}
+	if interactiveOutput.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", interactiveOutput.Failed)
+
+		return
+	}
 
 	fmt.Printf("output received (SendInteractive):\n %s\n\n\n", interactiveOutput.Result)
 
@@ -116,6 +121,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf(
 		"sent command '%s', output received (SendCommand):\n %s\n\n\n",
diff --git a/examples/network_driver/platforms/main.go b/examples/network_driver/platforms/main.go
index 55638c5..f2c0272 100644
--- a/examples/network_driver/platforms/main.go
+++ b/examples/network_driver/platforms/main.go
@@ -83,6 +83,11 @@ func main() {
 	if err != nil {
 		fmt.Printf("failed to send interactive input to device; error: %+v\n", err)
 	}
+	if interactiveOutput.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", interactiveOutput.Failed)
+
+		return
+	}
 
 	fmt.Printf("output received (SendInteractive):\n %s\n\n\n", interactiveOutput.Result)
 
@@ -94,6 +99,11 @@ func main() {
 		fmt.Printf("failed to send command; error: %+v\n", err)
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf(
 		"sent command '%s', output received (SendCommand):\n %s\n\n\n",
diff --git a/examples/network_driver/privilege_levels/main.go b/examples/network_driver/privilege_levels/main.go
index 686f759..a774ee8 100644
--- a/examples/network_driver/privilege_levels/main.go
+++ b/examples/network_driver/privilege_levels/main.go
@@ -72,6 +72,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("got running config: %s\n\n\n", r.Result)
 }
diff --git a/examples/network_driver/sending_configs/main.go b/examples/network_driver/sending_configs/main.go
index 2d36ad9..e1f246c 100644
--- a/examples/network_driver/sending_configs/main.go
+++ b/examples/network_driver/sending_configs/main.go
@@ -48,6 +48,11 @@ func main() {
 
 		return
 	}
+	if r.Failed != nil {
+		fmt.Printf("response object indicates failure: %+v\n", r.Failed)
+
+		return
+	}
 
 	fmt.Printf("sending configs took %f seconds", r.ElapsedTime)
 }