diff --git a/topologies/abc_leafv4.yaml b/topologies/abc_leafv4_mixed-link.yml
similarity index 100%
rename from topologies/abc_leafv4.yaml
rename to topologies/abc_leafv4_mixed-link.yml
diff --git a/topologies/abcd_corev6.yaml b/topologies/abcd_corev6.yaml
new file mode 100644
index 0000000..5a5f011
--- /dev/null
+++ b/topologies/abcd_corev6.yaml
@@ -0,0 +1,6 @@
+---
+links:
+  - domains: ['a', 'b']
+  - domains: ['b', 'c']
+    enable_v4: false
+  - domains: ['c', 'd']
diff --git a/topologies/pair.yml b/topologies/pair.yml
new file mode 100644
index 0000000..faa77cd
--- /dev/null
+++ b/topologies/pair.yml
@@ -0,0 +1,3 @@
+---
+links:
+  - domains: ['a', 'b']