Smart Access Gateway (SAG) provides quick diagnosis to detect and troubleshoot issues in SAG configurations, Internet quality, and workload quality. This allows you to find and handle network issues at the earliest opportunity.

Background information

When you connect private networks to Alibaba Cloud through SAG devices, network issues may occur due to poor Internet quality or incorrect configurations. This topic describes how to use quick diagnosis.

Procedure

  1. Log on to the Smart Access Gateway console.
  2. Use one of the following methods to go to the Device Management tab.
    • Click the ID of the target SAG instance. On the instance details page, click Device Management.
    • Find the target SAG instance and choose The Hide/Show icon > Device Management in the Actions column.
  3. On the Device Management tab, click Quick Diagnosis.
  4. Click Diagnose to diagnose the network status. The following table lists the check items.
    Type Item Description
    SAG configurations LAN port configurations Checks the status of the LAN port on the SAG device and whether the IP address of the LAN port is correctly configured.
    WAN port configurations Checks the status of the WAN port on the SAG device, the status of the 4G connection, and whether the IP address of the WAN port is correctly configured.
    Management port configurations Checks the status of the management port on the SAG device and whether the IP address of the management port is correctly configured.
    Leased line port configurations Checks the status of the leased line port on the SAG device and whether the IP address of the management port is correctly configured.
    CIDR block configurations Checks whether the CIDR blocks of the ports on the SAG device have IP addresses that overlap with each other.
    Neighbor device status Checks whether the SAG device has Open Shortest Path First (OSPF) or Border Gateway Protocol (BGP) enabled, and whether the neighbor device is working as expected.
    High availability configurations Checks whether the SAG device has high availability (HA) enabled and whether the HA feature is working as expected.
    Workload quality Connection status Checks whether the SAG device is connected to the management and control center.
    Online status Checks whether the SAG device is connected to Alibaba Cloud.
    Expiration status Checks whether the SAG device has expired.
    CCN configurations Checks whether the SAG device is associated with a Cloud Connect Network (CCN) instance, and whether the associated CCN instance is correctly configured.
    CIDR block configurations Checks whether the CIDR blocks of the ports on the SAG device overlap with the CIDR blocks in the cloud.
    VPN connection Checks the VPN connection through which the SAG device is connected to Alibaba Cloud. Check items include average latency of data transmission and packet loss.
    Internet quality Internet connection Checks the quality of the connection between the Internet and the SAG device. The SAG device can be connected to the Internet through a WAN port or 4G networks. Check items include average latency of data transmission and packet loss.
    DNS resolution Checks whether the SAG device can use DNS to resolve domain names as expected.
  5. After the diagnosis is completed, you can view the results and recommended solutions.
    The results can be classified into the following types based on the issue severity.
    Severity Description
    Error A major issue is detected on the check item. We recommend that you handle the issue at the earliest opportunity.
    Warning A minor issue is detected on the check item. You can handle the issue as needed.
    No Error No issue is detected on the check item.

What to do next

  • You can click The Export icon in the upper-right corner to download the diagnosis results.
  • After you fix the network issues, you can click Diagnose Again to verify the fixes.