On the VLAN attachment details page, locate the Status field. It
should be Up.
Check your route tables
Look at your route tables in both OCI and Google Cloud.
Check the OCI route table
In OCI, make sure that you see the Google Cloud routes that you expect.
Console
In the menu menu, select
Networking. In the Customer connectivity navigation, select
Dynamic routing gateway.
Click the name of the appropriate DRG.
In the list of attachments, look for the name of your VCN, and then click
the Autogenerated Drg Route Table for VCN attachments link.
Click Get all routes.
If you don't see the results that you expect, review the private virtual
circuits that you created in OCI. Verify that you entered the correct values
for each circuit, paying special attention to the values for
Customer BGP IPv4 address, BGP Peer IP, and VLAN. Then check the
route table again.
Check the Google Cloud route table
In Google Cloud, make sure that you see the OCI routes that you expect.
Console
In the Google Cloud console, go to the VPC networks page.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-29 UTC."],[],[],null,["# Verify your connections\n\nTo check connectivity between your Google Cloud and OCI networks, complete\nthe following tasks.\n\nCheck for a signal from OCI\n---------------------------\n\n\nIn Google Cloud, check to see whether your\nCross-Cloud Interconnect port is receiving a signal from the\nFastConnect port.\n\n### Console\n\n1. In the Google Cloud console, go to the Cloud Interconnect **Physical\n connections** page.\n\n [Go to **Physical\n connections**](https://console.cloud.google.com/hybrid/interconnects/list?tab=interconnects)\n2. Click the name of your primary Cross-Cloud Interconnect connection.\n3. On the **Interconnect details** page, locate the **Link circuit info** table. Check the **Receiving Optical Power** column. This column indicates whether the Cross-Cloud Interconnect connection is receiving input from the OCI port. The value in this column should be **OK**.\n4. Repeat the preceding steps for your redundant Cross-Cloud Interconnect connection.\n\nCheck the BGP sessions\n----------------------\n\nMake sure that your BGP sessions are up. Check the session state in both OCI and\nGoogle Cloud.\n\n### Verify the session in OCI\n\nTo check the session state in OCI, use the following steps. Complete these\nsteps twice, once for each FastConnect resource. \n\n### Console\n\n1. In the menu menu, select **Networking** . In the **Customer connectivity** navigation, select **FastConnect**.\n2. Click the name of the appropriate FastConnect resource.\n3. Click **Virtual circuits**. The page updates to include additional options.\n4. On the **Virtual circuit information** tab, locate the **IPv4 BGP state** field. It should be **Up**.\n\n### Verify the session in Google Cloud\n\nTo check the session state in Google Cloud, use the following steps. Complete these\nsteps twice, once for each Google Cloud VLAN attachment. \n\n### Console\n\n1. In the Google Cloud console, go to the Cloud Interconnect\n **VLAN attachments** page.\n\n [Go to VLAN attachments](https://console.cloud.google.com/hybrid/interconnects/list?tab=attachments)\n2. Click the name of your primary VLAN attachment.\n\n3. On the **VLAN attachment details** page, locate the **Status** field. It\n should be **Up**.\n\nCheck your route tables\n-----------------------\n\nLook at your route tables in both OCI and Google Cloud.\n\n### Check the OCI route table\n\nIn OCI, make sure that you see the Google Cloud routes that you expect. \n\n### Console\n\n1. In the menu menu, select **Networking** . In the **Customer connectivity** navigation, select **Dynamic routing gateway**.\n2. Click the name of the appropriate DRG.\n3. In the list of attachments, look for the name of your VCN, and then click the **Autogenerated Drg Route Table for VCN attachments** link.\n4. Click **Get all routes**.\n\nIf you don't see the results that you expect, review the private virtual\ncircuits that you created in OCI. Verify that you entered the correct values\nfor each circuit, paying special attention to the values for\n**Customer BGP IPv4 address** , **BGP Peer IP** , and **VLAN**. Then check the\nroute table again.\n\n### Check the Google Cloud route table\n\nIn Google Cloud, make sure that you see the OCI routes that you expect. \n\n### Console\n\n1. In the Google Cloud console, go to the **VPC networks** page.\n\n [Go to VPC networks](https://console.cloud.google.com/networking/networks/list)\n2. Click the name of your network.\n\n3. Click the **Routes** tab. Verify that the routes from your OCI network\n show up as expected.\n\nReview the Troubleshooting page\n-------------------------------\n\nFor additional guidance, see\n[Troubleshooting](/network-connectivity/docs/interconnect/support/troubleshooting)."]]
