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Cisco Bug: CSCul06380 - ISG does not respond to Discover after roaming

Last Modified

Feb 27, 2018

Products (17)

  • Cisco IOS
  • Cisco ME 3600X-24TS-M Switch
  • Cisco 7301 Router
  • Cisco 7206 Router
  • Cisco 7206VXR Router
  • Cisco 7204 Router
  • Cisco 7202 Router
  • Cisco ME 3600X-24CX-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
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Known Affected Releases


Description (partial)

When DHCP client starts with Discover(not renew) after roarming, ISG doesn't allocate an IP to the client with below error message, until the old session is timed out.

*Oct 15 11:26:33.814: DHCPD: Error code 1 returned in author_address - drop request

IOS-XE: 3.7.X
ISG: initiator dhcp (ISG is the DHCP server)
Scenario: Roaming between different interfaces(different sub-network)
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