[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-09-05。"],[],[],null,["# Modify VLAN attachments\n\nThis document describes how to modify VLAN attachments and Border Gateway\nProtocol (BGP) sessions for Cross-Cloud Interconnect.\n| **Note:** For definitions of terms used on this page, see [Cloud Interconnect key terms](/network-connectivity/docs/interconnect/concepts/terminology).\n\nThe following table describes properties of VLAN attachments and their BGP\nsessions, along with information about how to modify them.\n\nModify description, capacity, and MTU\n-------------------------------------\n\nThe section provides instructions for updating the description, capacity,\nand maximum transmission unit (MTU) of a VLAN attachment. Changing the\nattributes of a VLAN attachment, in rare cases, can cause traffic disruption.\nIf traffic is disrupted, the disruption typically lasts less than a minute.\n\nTo make use of the 1500-byte MTU, the VPC network that uses\nthe attachment must have an [MTU](/vpc/docs/mtu) set to `1500`.\nIn addition, the remote cloud resources must have an MTU set to`1500`.\nIf your network has the default MTU of `1460`, leave the field at `1440`. \n\n### Console\n\n1. In the Google Cloud console, go to the Cloud Interconnect\n **VLAN attachments** tab.\n\n [Go to VLAN attachments](https://console.cloud.google.com/hybrid/interconnects/list?tab=attachments)\n2. Select the VLAN attachment to modify.\n\n3. On the attachment's detail page, click **Edit**.\n\n4. Modify your VLAN attachment:\n\n - **Description**: Information about the VLAN attachment.\n - **Capacity**: The maximum bandwidth of the attachment.\n - **Maximum transmission unit (MTU)**: The MTU of the attachment.\n5. Click **Save**.\n\n### gcloud\n\nUse the\n[`gcloud compute interconnects attachments dedicated update` command](/sdk/gcloud/reference/compute/interconnects/attachments/dedicated/update): \n\n```\ngcloud compute interconnects attachments dedicated update NAME \\\n --region=REGION \\\n --description=DESCRIPTION \\\n --bandwidth=BANDWIDTH \\\n --mtu MTU\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eNAME\u003c/var\u003e: the name of the VLAN attachment\n- \u003cvar translate=\"no\"\u003eREGION\u003c/var\u003e: the region of the attachment\n- \u003cvar translate=\"no\"\u003eDESCRIPTION\u003c/var\u003e: a description of the attachment\n- \u003cvar translate=\"no\"\u003eBANDWIDTH\u003c/var\u003e: the provisioned capacity of the attachment\n- \u003cvar translate=\"no\"\u003eMTU\u003c/var\u003e: the MTU of the attachment\n\nWhat's next\n-----------\n\n- To learn more about Cross-Cloud Interconnect, see the\n [Cross-Cloud Interconnect overview](/network-connectivity/docs/interconnect/concepts/cci-overview).\n\n- To help you solve common issues that you might encounter when using\n Cloud Interconnect, see\n [Troubleshooting](/network-connectivity/docs/interconnect/support/troubleshooting#cci)."]]