Console

1. In the Google Cloud console, go to theInterconnect page.

   Go to Interconnect

2. On theCross-site networks tab, clickCreate cross-site network.

3. Specify the details of the cross-site network:

   • Name: a name for the cross-site network
   • Description: an optional description of the cross-site network

4. ClickNext.

5. Specify the basic details of the wire group to add to the cross-sitenetwork:

   • Name: a name for the wire group.
   • Description: an optional description of the wire group.

6. Select eitherVLAN mode orPort mode for your wire group. If necessary, reviewTraffic modes in the Cross-Site Interconnect overview.

7. In theUnmetered bandwidth field, enter the unmetered bandwidth,in Gbps, for the wire group.

   You can't configure bandwidth that exceeds the following:

   • Your quota between a given pair of metros or the limit for a given wire.If you haven't already, follow the instructions tocheck quotas and limits for bandwidth.
   • The Cross-Site Interconnect connection capacity.

   For additional considerations for configuringthis field, seeWire bandwidth.

8. If you configuredPort mode, review theFailure detectionfield. To enable failure detection, select theDisable portcheckbox.

   When you enable failure detection,Google Cloud continuously monitors each wire and disables a wireif it loses connectivity so that you can failover to an alternatepath, such as another healthy wire in the group.

9. Choose whether to allocate the wire group's bandwidth setting to eachwire or to share the bandwidth between all wires in the group.

   • Allocate per wire. The unmetered bandwidth is allocated to eachwire in the group. Consider the cost implications, because per-wireallocation reserves double the total bandwidth compared to sharedallocation.
   • Shared with wire group. The unmetered bandwidth is divided equallybetween each wire in the group. However, dynamic throttling allocatesunused unmetered bandwidth to other wires in the group.

10. ClickNext.

11. Specify the Cross-Site Interconnect connections over which to createyour cross-site network.

    1. Depending on your topology, select the connection or redundant connections that you created for your first site,Site A.
    2. Depending on your topology, select the connection or redundant connections that you created for your second site,Site B.

12. ClickNext.

13. If you configuredVLAN mode, specifyVLAN tags for eachwire in your wire group by entering an integer from2 to4093.

    You can't enter a VLAN tag value that is already in use on the sameCross-Site Interconnect connection.

14. Review the configuration of your cross-site network, and then clickCreate network.

15. If necessary, create additional wire groups in the cross-site networkby following the instructions toadd a wire group.You might want to add a wire group for the following reasons:

    • To add more bandwidth between site A and site B.

    • To connect additional sites. For example, you can add wiregroups that connect an additional site, site C, to site A and site B.

gcloud

Google Cloud CLI procedure overview

To complete the procedure for creating a cross-site network by usingthe Google Cloud CLI, do the following:

1. Create a cross-site network
2. Add a wire group to the cross-site network
3. Add an endpoint and connections for site A to the wire group:
   1. Add an endpoint that represents site A
   2. Add connection A1
   3. Add connection A2
4. Add an endpoint and connections for site B to the wire group:
   1. Add an endpoint that represents site B
   2. Add connection B1
   3. Add connection B2

You can create additional wire groups in the cross-site network dependingon your use case:

• To add more bandwidth between site A and site B, repeat the stepsfor creating a wire group and adding endpoints and connections.

• To connect additional sites, repeat the steps for each pair of sitesthat you want to connect. For example, you can create an additional wiregroup that connects site A to site C, and another that connects site B to site C.

You can alsoadd more wire groups later.

1. Create a cross-site network

To create a cross-site network, use thegcloud compute interconnects cross-site-networks create command.

  gcloud compute interconnects cross-site-networks createCROSS_SITE_NETWORK_NAME \      [--description=DESCRIPTION]

Replace the following values:

• CROSS_SITE_NETWORK_NAME: the name of the cross-site network
• DESCRIPTION: an optional description for the cross-sitenetwork

2. Add a wire group

To add a wire group, use thegcloud compute interconnects wire-groups create command.

  gcloud compute interconnects wire-groups createWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --bandwidth-unmetered=UNMETERED_BANDWIDTH \      --bandwidth-allocation=BANDWIDTH_ALLOCATION \      --fault-response=FAILURE_DETECTION \      [--description=DESCRIPTION]

Replace the following values:

• WIRE_GROUP_NAME: the name of the wire group
• CROSS_SITE_NETWORK_NAME: the name of the cross-sitenetwork to add the wire group to

• UNMETERED_BANDWIDTH: the unmetered bandwidthfor the wire group in Gbps. The bandwidth that you specify is allocatedto each wire in the group.

  You can't configure bandwidth that exceeds the following:

  • Your quota between a given pair of metros or the limit for a given wire.If you haven't already, follow the instructions tocheck quotas and limits for bandwidth.
  • The Cross-Site Interconnect connection capacity.

  For additional considerations for configuringthis field, seeWire bandwidth.

• BANDWIDTH_ALLOCATION: use this flag to set thebandwidth allocation scope, which can have either of the following values:

  • ALLOCATE_PER_WIRE, which provides a separate unmetered bandwidthallocation for each wire in the group.
  • SHARED_WITH_WIRE_GROUP, which has one unmetered bandwidth allocationthat is divided across each wire in the group. Dynamic throttlingreallocates unused bandwidth from unutilized or underutilized wires toother wires in the group.

• FAILURE_DETECTION: use this flag for port modeconfigurations only. To enable failure detection, enterDISABLE_PORT.Otherwise, enterNONE.

  When you enable failure detection,Google Cloud continuously monitors each wire and disables a wireif it loses connectivity so that you can failover to an alternatepath, such as another healthy wire in the group.

• DESCRIPTION: an optional description of the wire group.

3a. Add an endpoint for site A

To add an endpoint to the wire group that represents your first site, orsite A, use thegcloud compute interconnects wire-groups add-endpoint command.

  gcloud compute interconnects wire-groups add-endpointWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_A_LABEL

Replace the following values:

• WIRE_GROUP_NAME: the name of the wire group that youcreated previously
• CROSS_SITE_NETWORK_NAME: the name of the cross-sitenetwork to which you are adding a wire group
• ENDPOINT_A_LABEL: a label for the endpoint, suchasashburn

3b. Add connection A1

To add the first Cross-Site Interconnect connection to thewire group for site A, orconnection A1, use thegcloud compute interconnects wire-groups add-interconnect command.

  gcloud compute interconnects wire-groups add-interconnectWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_A_LABEL \      --interconnect-label=INTERCONNECT_CONNECTION_A1_LABEL \      --interconnect=INTERCONNECT_CONNECTION_A1 \      --vlan-tags=TRAFFIC_MODE

Replace the following values:

• WIRE_GROUP_NAME: the name of the wire group that youcreated previously
• CROSS_SITE_NETWORK_NAME: the name of the cross-sitenetwork to which you are adding a wire group
• ENDPOINT_A_LABEL: the existing label that you specifiedwhen you created the endpoint for site A
• INTERCONNECT_CONNECTION_A1_LABEL: a new labelfor the first Cross-Site Interconnect connection that youcreated for site A
• INTERCONNECT_CONNECTION_A1: the connectionthat you created for site A. You can specify the connection by its name,partial URI, or full URI. See the following examples:
  • my-connection
  • projects/my-project/global/interconnects/my-connection
  • https://compute.googleapis.com/compute/v1/projects/my-project/global/interconnects/my-connection

• TRAFFIC_MODE: the traffic mode configuration for the wiresthat use this Cross-Site Interconnect connection:

  • To configure port mode, enter-1.

  • To configure VLAN mode, choose one of the following:

    • To auto-allocate VLAN tag values, enter0.
    • To specify your own VLAN tag values, enter an integer from2 to4093. VLAN tags must be the same for both endpoints of a wire. Youcan't enter a VLAN tag value that is already in use on theCloud Interconnect connection.

3c. Add connection A2

  gcloud compute interconnects wire-groups add-interconnectWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_A_LABEL \      --interconnect-label=INTERCONNECT_CONNECTION_A2_LABEL \      --interconnect=INTERCONNECT_CONNECTION_A2 \      --vlan-tags=TRAFFIC_MODE

Replace the following values:

• WIRE_GROUP_NAME: the name of the wire group that youcreated previously
• CROSS_SITE_NETWORK_NAME: the name of the cross-sitenetwork to which you are adding a wire group
• ENDPOINT_A_LABEL: the existing label that you specifiedwhen you created the endpoint for site A
• INTERCONNECT_CONNECTION_A2_LABEL: a new labelfor the redundant Cross-Site Interconnect connection that youcreated for site A
• INTERCONNECT_CONNECTION_A2: the redundant connectionthat you created for site A. You can specify the connection by its name,partial URI, or full URI. See the following examples:
  • my-connection
  • projects/my-project/global/interconnects/my-connection
  • https://compute.googleapis.com/compute/v1/projects/my-project/global/interconnects/my-connection

• TRAFFIC_MODE: the traffic mode configuration for the wiresthat use this Cross-Site Interconnect connection:

  • To configure port mode, enter-1.

  • To configure VLAN mode, choose one of the following:

    • To auto-allocate VLAN tag values, enter0.
    • To specify your own VLAN tag values, enter an integer from2 to4093. VLAN tags must be the same for both endpoints of a wire. Youcan't enter a VLAN tag value that is already in use on theCloud Interconnect connection.

4a. Add an endpoint for site B

To add an endpoint to the wire group that represents your second site, orsite B, use thegcloud compute interconnects wire-groups add-endpoint command.

  gcloud compute interconnects wire-groups add-endpointWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_B_LABEL

Replace the following values:

• WIRE_GROUP_NAME: the name of the wire group that youcreated previously
• CROSS_SITE_NETWORK_NAME: the name of the cross-sitenetwork to which you are adding a wire group
• ENDPOINT_B_LABEL: a label for the endpoint, suchaschicago

4b. Add connection B1

To add a Cross-Site Interconnect connection to the wire groupfor site B, orInterconnect connection B1, use thegcloud compute interconnects wire-groups add-interconnect command.

  gcloud compute interconnects wire-groups add-interconnectWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_B_LABEL \      --interconnect-label=INTERCONNECT_CONNECTION_B1_LABEL \      --interconnect=INTERCONNECT_CONNECTION_B1 \      --vlan-tags=TRAFFIC_MODE

  gcloud compute interconnects wire-groups add-interconnectWIRE_GROUP_NAME \      --cross-site-network=CROSS_SITE_NETWORK_NAME \      --endpoint-label=ENDPOINT_B_LABEL \      --interconnect-label=INTERCONNECT_CONNECTION_B2_LABEL \      --interconnect=INTERCONNECT_CONNECTION_B2 \      --vlan-tags=TRAFFIC_MODE