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Port not properly passing traffic after netlogin authentication when netlogin mode is set to optional.

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TitlePort not properly passing traffic after netlogin authentication when netlogin mode is set to optional.
Symptoms
  • fdb shows in two VLANs on a single port.
  • no traffic passing on port in expected VLAN
  • IP arp for device seen on original VLAN
Environment
  • Summit: x460-G2
  • EXOS: 21.1.1.4
  • NetLogin
Cause
Netlogin authentication mode for port is set to "optional"
Resolution
Workaround is to set the authentication mode to "required"
  • configure netlogin port <port-number> authentication mode required
Additional notes

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