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Failure to Establish Gateway Tunnels
The insight can be accessed from the , , and context. This insight provides information about gateway tunnels that are marked down in the network. It is categorized under availability since the clients connected to these gateways experience connectivity drops.
insight is available for branch and VPNC gateways in the network.
Tunnels are marked down in the network based on the following scenarios:
- If Classic Central receives telemetry from a branch gateway that a specific tunnel is down.
- If Classic Central receives telemetry from the VPNC that a specific tunnel is down.
- Lack of telemetry from both branch and VPNC gateway.
This insight displays the following information:
Insight Summary
The insight summary provides the following details:
- —Displays the possible causes for tunnel down in the network.
- —Displays the exact number and percentage of tunnel down that occurred against each failure reason.
Time Series Graph
The time series graph displays the percentage and number of tunnels down in the network during the selected time period. You can hover your mouse over each bar graph to see the exact percentage of tunnels down.
Cards
The cards vary based on the context that you access the insight from. Click one of the cards to view further details:
|
Cards |
Context |
|---|---|
|
Global |
|
|
Global, Site |
|
|
Global, Site, Device |
|
|
Global, Site, Device |
Site
Lists the number of sites where the gateways experience tunnel down. Click the arrow 
to expand the card and click the number displayed on the card, to view a detailed description of the impacted sites:
- —Name of the site impacted by the insight.
- —Number of tunnels down in each site that experience high memory utilization in each site.
- —Total number of gateway tunnels in each site.
- —Number of gateways impacted by tunnel down in each site.
- —Number of VPNC gateways that experience tunnel down in each site.
Gateway
Lists the number and the reason for the cause of tunnel down in gateways. Click the arrow to expand the card and click the number displayed on the card to view a detailed description of the impacted gateways:
- —Serial number of each gateway and link to the page.
- —Name of the gateway that experience tunnel down.
- —Operational mode of the gateway.
- —Number of tunnels down in each gateway.
- —Total number tunnels in each gateway.
- —Time range of tunnel down in each gateway.
- —The hardware model number of the gateway.
- —Version of the firmware running on each gateway.
- —Name of the site where the gateway resides.
VPNC
Displays the total number of VPNC gateways experiencing tunnel down. Click the arrow to expand the card and view the amount of time (minutes) and the reasons for the cause of down tunnels on the VPNC gateways.
Click the number displayed on the card to view a detailed description of the impacted VPNC gateways:
- —Serial number of each gateway and link to the specific insight at the gateway context.
- —Name of the gateway that experience tunnel down.
- —Operation mode of the VPNC.
- —Number of tunnels down in each gateway.
- —Number of tunnels down in each gateway.
- —Number of gateways impacted by tunnel down.
- —Number of sites impacted by tunnel down.
- —Time range of tunnel down in each gateway.
- —The hardware model number of the gateway.
- —Version of the firmware running on each gateway.
- —Name of the site where the gateway resides.
Tunnel
Displays the total number of gateways experiencing the tunnel down. Click the arrow to expand the card to view the amount of time (minutes) and the reasons for the cause of tunnel down in the network.
Click the number displayed on the card to view a detailed description of the impacted tunnels:
- —Name of the site where the tunnel resides and link to the specific insight at the site context.
- —IP address of the impacted gateway.
- —IP address of the impacted VPNC gateway.
- —Time range of tunnel down.
- —VLAN ID of the gateway.
- —VLAN ID of the VPNC.
- —Name of the gateway where the tunnel is down.
- —MAC Media Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network. address of the impacted gateway.
- —Name of the VPNC gateway where the tunnel is down.
- —MAC address of the impacted VPNC gateway.
- —Serial number of the gateway and link to the specific insight at the gateway context.
- —Serial number of VPNC gateway.
