# Compare AWS Cloud WAN core network policy change set versions
<a name="cloudwan-policy-version-compare"></a>

Compare two policy versions against each other using the console. The comparison returns line-by-line changes between the two policies in JSON format with changes highlighted.

**To compare policy versions**

1. Access the Network Manager console at [https://console.aws.amazon.com/networkmanager/home/](https://console.aws.amazon.com/networkmanager/home).

1. Under **Connectivity**, choose **Global Networks**.

1. On the **Global networks** page, choose the global network ID.

1. In the navigation pane, choose **Core network**, and then choose **Policy versions**.

1. Under **Policy version ID**, choose the policy version that you want to compare against another policy.

1. Choose **View or apply change set**. 

1. On the Change set page, choose **Compare with LIVE**.

1. From the **Source** and **Target** dropdown lists, choose the policy versions that you want to compare. 

1. (Optional) From the **Policy section** dropdown list, choose a specific policy section to compare. Options are:
   + **All** — Compares all policy changes between the two policies. This is the default view.
   + **Network configuration** — Compares Border Gateway Protocol (BGP), Autonomous System Number (ASN), and core network edge locations.
   + **Segments** — Compares segment additions, deletions, or modifications.
   + **Segment actions** — Compares segment sharing and filtering.
   + **Attachment policies** — Compare how attachments map to segments.

1. Choose **Compare**.

   The **Results of comparison** section displays the changes between the two policies. In the following example, the **Segments** of a current LIVE **Source** policy are compared against the segment changes to an undeployed **Target** policy. The comparison shows that a new segment, **sandbox**, will be added when deploying the **Target** policy version.  
![\[A comparison of the Segments section between a LIVE policy and a policy version.\]](http://docs.aws.amazon.com/network-manager/latest/cloudwan/images/cwan-policy-compare.png)

1. By default, the changes for each policy display in separate policy windows. To see the results of the comparison line-by-line in a single window, turn the **Split** toggle off.