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AWS network-manager: Add system routes to Cloud WAN route evaluation order

Service: network-manager · 2026-10-23 · Documentation low

File: network-manager/latest/cloudwan/cloudwan-route-evaluation.md · Type: network

Summary

Inserts 'System routes' as step 2 in the route evaluation order (renumbering subsequent steps) and links to the 1:1 NAT routing behavior page.

Security assessment

The edit documents routing precedence for NAT-installed system routes. Routing order can affect traffic paths, but the change is descriptive documentation of feature behavior, not a fix or hardening guidance.

Evidence

+    2. System routes. For more information, see [Routing behavior for 1:1 NAT in AWS Cloud WAN](./cloudwan-nat-routing.html).

Diff

diff --git a/network-manager/latest/cloudwan/cloudwan-route-evaluation.md b/network-manager/latest/cloudwan/cloudwan-route-evaluation.md
index 03da029..38fc2ba 100644
--- a//network-manager/latest/cloudwan/cloudwan-route-evaluation.md
+++ b//network-manager/latest/cloudwan/cloudwan-route-evaluation.md
@@ -17 +17 @@ Cloud WAN evaluates routes at each core network edge in the following order:
-    2. VPC-propagated routes in the same Region.
+    2. System routes. For more information, see [Routing behavior for 1:1 NAT in AWS Cloud WAN](./cloudwan-nat-routing.html).
@@ -19 +19,3 @@ Cloud WAN evaluates routes at each core network edge in the following order:
-    3. For dynamic routes received at the core network with an _unequal_ AS path length and/or MED BGP attributes, Cloud WAN evaluates them in the following order:
+    3. VPC-propagated routes in the same Region.
+
+    4. For dynamic routes received at the core network with an _unequal_ AS path length and/or MED BGP attributes, Cloud WAN evaluates them in the following order:
@@ -25 +27 @@ Cloud WAN evaluates routes at each core network edge in the following order:
-    4. For dynamic routes received at the core network with _equal_ AS path length and MED BGP attributes, Cloud WAN evaluates them in the following order:
+    5. For dynamic routes received at the core network with _equal_ AS path length and MED BGP attributes, Cloud WAN evaluates them in the following order: