Preview Tool

Cisco Bug: CSCuj17631 - VSG Performance deteriorates when egress vEth PP is secured

Last Modified

Feb 05, 2017

Products (2)

  • Cisco Nexus 1000V Switch for VMware vSphere
  • Cisco Nexus 1000V Switch

Known Affected Releases


Description (partial)

TCP bandwidth drops by ~ 60% (compared to no VSG applied) when a port-profile with VSG is configured on the Egress side.

The issue is seen when all the below conditions are met:
* The source and destination VMs are on separate hosts.
* The uplink is a 10Gb uplink.
* A port-profile with VSG service is configured on the destination host.
* TCP traffic is sent using iperf (Transfer occurs over a single connection)
Bug details contain sensitive information and therefore require a 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.