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Cisco Bug: CSCsz48211 - 802.1x & DHCP Snooping: host can't get IP add in guest or auth-fail vlan

Last Modified

Jan 27, 2017

Products (1)

  • Cisco Catalyst 3560 Series Switches

Known Affected Releases


Description (partial)


A data device can't get an IP address though DHCP.


All of the following must be true.

- 802.1x switchport configuration
- authentication host-mode multi-domain
- IP phone is not present .OR. IP phone is present but fails authentication
- data device is in guest vlan .OR. auth-fail vlan
- DHCP snooping is configured on the guest vlan or auth-fail vlan which ever is applicable
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
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