Cloud Router가 BGP 피어에서 NOTIFICATION 메시지를 수신하면 Cloud Router는 해당 피어와의 BGP 연결을 닫고 학습된 모든 경로를 삭제합니다.
BGP 피어는 다양한 이유로 NOTIFICATION 메시지를 전송할 수 있습니다. 예를 들어 피어는 'Hold Timer Expired' 메시지를 보낼 수 있습니다.
Cloud Router 로그에 CONFIG_DISABLED 메시지가 표시됨
CONFIG_DISABLED 메시지는 Cloud Router에서 의도적으로 BGP 세션을 중지했음을 나타냅니다. BGP 세션을 중지하면 Cloud Router가 오류 상태를 즉시 피어에 전달하려고 합니다.
이 메시지는 다음과 같은 이유로 표시될 수 있습니다.
사용자가 Cloud Router API,Google Cloud 콘솔 또는 Google Cloud CLI를 사용하여 BGP 세션을 사용 중지했습니다. BGP 세션 중지 또는 삭제를 참조하세요.
Cloud VPN에 설정된 BGP 세션의 경우 BGP 세션과 연결된 VPN 터널에서 IKE 및 하위 보안 연결(SA)을 설정하지 않았습니다. VPN 연결 문제를 해결하려면 Cloud VPN 문제 해결을 참조하세요.
Cloud Interconnect에 설정된 BGP 세션의 경우 VLAN 연결이 구성되지 않았거나 관리자 다운 상태입니다. 이 문제를 해결하려면 Cloud Interconnect 문서의 문제 해결을 참조하세요.
BFD가 사용 설정된 BGP 세션의 경우 Cloud Router의 BFD 제어 감지 타이머가 만료되었습니다. 이러한 경우 BGP 세션이 중지됩니다. BFD 세션 상태에 대한 상세 설명은 BFD 진단 메시지 및 세션 상태를 참조하세요.
Cloud Router 로그에 LINK_DOWN 메시지가 표시됨
Google 피어링 에지 라우터와 Cloud Interconnect용 VLAN 연결 간의 링크가 다운되면 Cloud Router 로그에 LINK_DOWN 메시지가 표시됩니다. 피어링 에지 라우터는 Cloud Interconnect 연결을 프로비저닝한 코로케이션 시설 내에서 Google이 관리하는 네트워킹 장비입니다.
LINK_DOWN 메시지는 해당 BGP 피어 상태가 다운되었음을 나타내는 신호입니다. 이 메시지는 Cloud Interconnect 기반 BGP 세션에만 적용됩니다.
다음 단계
Cloud Logging을 사용하여 Cloud Router를 모니터링하는 방법에 대한 자세한 내용은 로그 및 측정항목 보기를 참조하세요.
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-09-05(UTC)"],[],[],null,["# Troubleshoot Cloud Router log messages\n======================================\n\nThis guide is for troubleshooting log messages that appear in\nCloud Router logs.\n\nFor additional troubleshooting information, see the following:\n\n- [Troubleshoot BGP sessions](/network-connectivity/docs/router/support/troubleshoot-bgp-sessions)\n- [Troubleshoot BGP peering](/network-connectivity/docs/router/support/troubleshoot-bgp-peering)\n- [Troubleshoot BGP routes and route\n selection](/network-connectivity/docs/router/support/troubleshoot-bgp-routes)\n\n`NOTIFICATION_RECEIVED` message appears in Cloud Router logs\n------------------------------------------------------------\n\nA `NOTIFICATION_RECEIVED` message appears in the Cloud Router logs when\nthe Cloud Router has received a `NOTIFICATION` message from the BGP\npeer. The `NOTIFICATION` message is a signal to Cloud Router that it\nshould stop the BGP session.\n\nWhen the Cloud Router receives a `NOTIFICATION` message from its BGP\npeer, Cloud Router closes the BGP connection with that peer and removes\nall its learned routes.\n\nThe BGP peer can send `NOTIFICATION` messages for a variety of reasons. For\nexample, the peer might send a \"Hold Timer Expired\" message.\n\n`CONFIG_DISABLED` message appears in Cloud Router logs\n------------------------------------------------------\n\nA `CONFIG_DISABLED` message indicates that Cloud Router has\nintentionally stopped the BGP session. By stopping the BGP session,\nCloud Router is attempting to immediately communicate an error state to\nits peer.\n\nThis message can appear due to any of the following reasons:\n\n- A user has disabled the BGP session by using the Cloud Router API,\n Google Cloud console, or the Google Cloud CLI. See [Disabling or removing BGP\n sessions](/network-connectivity/docs/router/how-to/disabling-removing-bgp).\n\n- For a BGP session set up for Cloud VPN, the VPN tunnel associated\n with the BGP session has not established an IKE and child security\n association (SA). To troubleshoot VPN connectivity, see [Cloud VPN\n troubleshooting](/network-connectivity/docs/vpn/support/troubleshooting).\n\n- For a BGP session set up for Cloud Interconnect, the VLAN\n attachment is not configured or is in an admin-down state. To troubleshoot\n the issue further, see\n [Troubleshooting](/network-connectivity/docs/interconnect/support/troubleshooting)\n in the Cloud Interconnect documentation.\n\n- For a BFD-enabled BGP session, the BFD control detection timer on the\n Cloud Router has expired. When this occurs, the BGP session is\n stopped. For more information on BFD session states, see [BFD diagnostic\n messages and session states](/network-connectivity/docs/router/concepts/bfd-states).\n\n`LINK_DOWN` message appears in Cloud Router logs\n------------------------------------------------\n\nA `LINK_DOWN` message appears in the Cloud Router logs when the link\nbetween the Google peering edge router and your VLAN attachment for\nCloud Interconnect is down. The peering edge router is networking\nequipment that is managed by Google inside the colocation facility where you\nhave provisioned your Cloud Interconnect connection.\n\nThe `LINK_DOWN` message is a signal that the corresponding BGP peer status is\ndown. This message applies only to Cloud Interconnect-based BGP\nsessions.\n\nWhat's next\n-----------\n\n- For more information about how to use Cloud Logging to monitor\n Cloud Router, see\n [View logs and metrics](/network-connectivity/docs/router/how-to/viewing-logs-metrics).\n\n- For additional support, see\n [Getting support](/network-connectivity/docs/router/support/getting-support).\n\n- For information about BGP session states, see\n [BGP session states](/network-connectivity/docs/router/concepts/bgp-states).\n\n- For information about diagnostic messages and session states related to\n Bidirectional Forwarding Detection (BFD), see\n [BFD diagnostic messages and session states](/network-connectivity/docs/router/concepts/bfd-states).\n\n- For issues related to using Cloud Router with Router appliance,\n see\n [Troubleshooting Router appliance](/network-connectivity/docs/network-connectivity-center/support/troubleshooting#troubleshooting-ra)\n in the Network Connectivity Center documentation."]]
