To configure Google Cloud Platform (GCP) Interconnect and Oracle Cloud Infrastructure (OCI) FastConnect
To configure Google Cloud Platform (GCP) Interconnect
and Oracle Cloud Infrastructure (OCI) FastConnect, you need to establish
a reliable, high-bandwidth connection between GCP and OCI for private
communication. This connection can be achieved via Partner Interconnect
for GCP and FastConnect for OCI. Below is a detailed step-by-step guide
to set up GCP Interconnect with OCI FastConnect:
1. Understanding the Terminology
a. Google Cloud Interconnect
- Google
Cloud Interconnect offers two types of connections:
- Dedicated
Interconnect: Physical connections between your on-premise
infrastructure and GCP.
- Partner
Interconnect: A private connection provided by GCP’s network partners
to connect your on-prem infrastructure or other clouds to GCP.
For GCP-to-OCI, Partner Interconnect is typically
used since both clouds are involved.
b. OCI FastConnect
- Oracle
FastConnect provides a dedicated, private connection between OCI and
your on-premise data center or other clouds (e.g., GCP, AWS). You can set
up FastConnect either directly or through FastConnect Partner Networks.
2. Steps to Configure GCP Interconnect with OCI
FastConnect
The process involves configuring both GCP and OCI to enable
communication through their respective private connection services. You will
typically need to engage with a network partner for the connection.
Step 1: Choose a Partner for Interconnect
- Select
a Network Partner:
- Both
GCP Partner Interconnect and OCI FastConnect work with various network
partners like Equinix, Megaport, and BT.
- Select
a partner that supports both GCP and OCI and provides connectivity in the
regions where your workloads are hosted.
Step 2: Configure GCP Partner Interconnect
- Reserve
VLAN Attachments:
- Go
to Google Cloud Console.
- Navigate
to Hybrid Connectivity → Partner Interconnect.
- Click
Create a Connection and select Partner Interconnect.
- Enter
the VLAN attachment settings, which will be used to connect to the
partner. This includes the region, VLAN tag, and the bandwidth you want
to allocate.
- Work
with the Partner:
- The
network partner will provide you with connection details, such as LOA
(Letter of Authorization) and Cross-Connect ID.
- Share
these details with your partner, and they will establish the physical
link between GCP and their network.
- Configure
the VPC on GCP:
- You
need to configure the Virtual Private Cloud (VPC) network and cloud
router in GCP to manage routing over the Partner Interconnect.
- Create
a Cloud Router under the Networking tab and link it to the VLAN
Attachment you reserved.
- Advertise
the necessary IP ranges to OCI using BGP (Border Gateway Protocol),
which will enable IP routing between the two clouds.
Step 3: Configure OCI FastConnect
- Create
a FastConnect Virtual Circuit:
- In
the Oracle Cloud Console, go to Networking → FastConnect
→ Create Virtual Circuit.
- Choose
FastConnect via Partner as the connection type, since you are
using a partner for the interconnection with GCP.
- Enter
the Partner Details (e.g., Megaport or Equinix), and select the location
and bandwidth that matches the details from GCP.
- Specify
the BGP Information:
- During
the FastConnect setup, specify BGP ASN (Autonomous System Number),
IP ranges, and BGP session details that match your GCP Interconnect
configuration.
- OCI
will provide you with a BGP IP address to use on your GCP side.
- Confirm
the FastConnect Virtual Circuit:
- Once
the network partner has provisioned the FastConnect, you can confirm the virtual
circuit status in the OCI console. It should show as active.
Step 4: Establish BGP Peering
- Configure
BGP on GCP Cloud Router:
- On
the GCP Cloud Router that you created earlier, configure the BGP peer
for the connection to OCI.
- Use
the IP addresses and ASN information provided by OCI FastConnect.
- Make
sure the advertised routes from GCP can reach the necessary OCI networks.
- Configure
BGP on OCI:
- In
OCI, configure the BGP peer for GCP in the FastConnect settings.
- Advertise
the necessary routes to GCP so that traffic can flow between the GCP VPC
and the OCI VCN (Virtual Cloud Network).
- Test
the BGP Connection:
- Once
the BGP sessions are established on both GCP and OCI, test the connection
by pinging resources between the GCP VPC and OCI VCN.
- Check
the routing tables in both environments to confirm that the proper routes
are learned.
Step 5: Verify and Monitor the Connection
- Check
Network Performance:
- Use
network diagnostic tools to measure latency and throughput between GCP
and OCI.
- Ensure
the desired bandwidth and latency are being met, and verify that the
connection remains stable under load.
- Monitoring:
- Use
the monitoring tools available in both GCP and OCI to track the
performance of the interconnect.
- Set
up alerts for any issues such as BGP flaps, high latency, or downtime.
3. Example Scenario
Let’s say you want to connect your GCP resources in
us-central1 with your OCI resources in Phoenix (us-ashburn-1).
- Partner
Selection: Choose a partner like Megaport that has availability
in both the GCP region (us-central1) and the OCI region (us-ashburn-1).
- Provision
VLAN on GCP: Create a VLAN attachment using Google Cloud Console
and specify Megaport as the partner.
- Provision
Virtual Circuit on OCI: Create a FastConnect virtual circuit on
OCI using Megaport as the provider. Specify the Phoenix region and
ensure that the bandwidth matches the GCP Interconnect bandwidth.
- BGP
Configuration: Set up BGP peering between the GCP Cloud Router
and OCI’s FastConnect, making sure that IP routes are properly advertised.
4. Best Practices
- Use
Redundant Connections:
- Ensure
redundancy by setting up multiple Interconnects/FastConnect circuits in
different availability zones or regions.
- Bandwidth
Considerations:
- Choose
appropriate bandwidth for your workloads. If you're unsure, start with a
lower bandwidth tier and monitor usage before scaling up.
- Test
the Network Regularly:
- Periodically
test the connection to ensure performance and reliability, especially
under high loads.
- Keep
BGP Configurations Consistent:
- Ensure
that BGP configuration on both GCP and OCI matches to avoid routing
issues.
- Engage
with Network Partners:
- Work
closely with your partner (e.g., Megaport, Equinix) to ensure the setup
is correct and troubleshoot any network issues.
5. Monitoring and Troubleshooting
Both GCP and OCI provide built-in tools for
monitoring the health of the connection:
- Google
Cloud Monitoring: GCP’s Cloud Monitoring can monitor the health
of the Interconnect connection, traffic, and latency.
- OCI
Monitoring: Use OCI’s Network Monitoring tools to track the
FastConnect virtual circuit status, traffic levels, and BGP sessions.
If issues arise, you can:
- Check
BGP session status.
- Validate
that advertised routes are properly learned.
- Use
diagnostic tools like ping, traceroute, and OCI's FastConnect health
check.
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