Guest

Preview Tool

Cisco Bug: CSCuw55005 - VxLAN:On standalone TOR, after feature VPC NVE loopback goes down.

Last Modified

Oct 05, 2018

Products (1)

  • Cisco MDS 9000 NX-OS and SAN-OS Software

Known Affected Releases

7.0(3)I2(1.24) 7.0(3)I2(1.48) 7.0(3)I2(1.71) 7.0(8)II(0.1)

Description (partial)

Symptom:
Loopback interface stuck in admin down

Conditions:
loopback0 is down (Administratively down)
admin state is up,
 

Conditions:
"feature vpc" is enabled

Related Community Discussions

VXLAN 環境で NVE source の Loopback interface が Admin down となる実装について
    問題の概要 VXLAN 環境で利用している Nexus 9000/3000 シリーズで NVE interface の source に指定されている Loopback interface が Administrative down になる場合があります。 この動作はマニュアルに記載されている以下のように、 vPC 環境での peer-link 障害時に Secondary の通信を意図的に停止するための実装です。 | VPC Considerations for VXLAN BGP EVPN Deployment When peer-link is shut, the loopback interface used by NVE on the VPC secondary is brought down and the status is Admin Shut. This is done so that the route to the loopback is withdrawn on the upstream and that the upstream can divert all ...
Latest activity: Jun 14, 2018
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.