This document describes how to modify VLAN attachments for Dedicated Interconnect.
The following table lists properties associated with VLAN attachments and describes how to modify the properties.
|Property||How to modify|
For details, see the next section Modifying description, capacity, and MTU.
Modifications are immediate and in rare cases, can cause traffic disruption. If traffic is disrupted, the disruption lasts less than a minute.
|Whether a VLAN attachment is enabled or disabled||To disable or re-enable a VLAN attachment, see Disable VLAN attachments.|
BGP IP addresses (Cloud Router IP address, on-premises router IP address)
You can't modify these properties for existing attachments. Instead, you must recreate the VLAN attachment.
To create VLAN attachments for Dedicated Interconnect, see Creating VLAN attachments.
|MD5 authentication||Follow the steps in Add authentication to an existing session.|
The peer ASN is not a property of the VLAN attachment—it is part of the BGP configuration of the Cloud Router. To modify the peer ASN, update the Cloud Router's BGP session for the VLAN attachment.
For more information, see the following resources:
- Viewing BGP session configuration
glcoud compute routers update-bgp-peercommand reference
routers.updateAPI method reference
Modify description, capacity, and MTU
The section provides instructions for updating the description, capacity, and maximum transmission unit (MTU) of a VLAN attachment. Changing the attributes of a VLAN attachment, in rare cases, can cause traffic disruption. If traffic is disrupted, the disruption lasts less than a minute.
To make use of the 1500-byte MTU, the VPC network using
the attachment must have an MTU set to
In addition, the on-premises VMs and routers must have an MTU set to
If your network has the default MTU of
1460, leave the field at
In the Google Cloud console, go to the Cloud Interconnect VLAN attachments tab.
Select the VLAN attachment to modify.
On the attachment's detail page, click Edit.
Modify your VLAN attachment:
- Description: Information about the VLAN attachment.
- Capacity: The maximum bandwidth of the attachment.
- Maximum transmission unit (MTU): The MTU of the attachment.
interconnectAttachment by specifying the name of the existing
VLAN attachment and the attributes to modify:
gcloud compute interconnects attachments dedicated update NAME \ --region=REGION \ --description=DESCRIPTION \ --bandwidth=BANDWIDTH \ --mtu MTU
Replace the following:
NAME: the name of the existing VLAN attachment
REGION: the region of the attachment
DESCRIPTION: a description of the attachment
BANDWIDTH: the provisioned capacity of the attachment
MTU: the MTU of the attachment
For more information, see the
gcloud compute interconnects attachments dedicated update reference.
To create an Interconnect connection, see the Dedicated Interconnect provisioning overview.
To learn more about Cloud Interconnect options, see the Cloud Interconnect overview.
To help you solve common issues that you might encounter when using Cloud Interconnect, see Troubleshooting.