Server authenticated but got 169.254.x.x IP

[antonioyan99]

Hi Cisco ISE expert,

An very strange issue just happened from my client's ISE deployement.

A server with a static IP as 10.42.x.x passed authentication but it's showing a 169.254.x.x IP address from ISE log.

And the server was offline, the user was not able to ping the 10.42.x.x address.

After the admin issued re-authentication, it came back online with the 10.42.x.x

I have attached a screenshot of the log.

Does someone happen to know why this happend?

Thanks.

[nspasov]

Can you post your switchport configuration?

My guess is that the server times out on DHCP.

Thank you for rating helpful posts!

[antonioyan99]

I believe I said it's static IP, and I have confirmed with the client .

Here is the switch port configruation:

interface GigabitEthernet1/0/6
 description <<< customer port For E10 service  <<<
 switchport access vlan 2
 switchport mode access
 no logging event link-status
 authentication event fail action next-method
 authentication event server dead action authorize vlan 2
 authentication event server dead action authorize voice
 authentication event server alive action reinitialize
 authentication host-mode multi-auth
 authentication open
 authentication order dot1x mab
 authentication priority dot1x mab
 authentication port-control auto
 authentication periodic
 authentication timer reauthenticate 7200
 authentication violation restrict
 mab
 no snmp trap link-status
 mls qos trust dscp
 dot1x pae authenticator
 dot1x timeout tx-period 10
 storm-control broadcast level 90.00
 storm-control multicast level 90.00
 storm-control action shutdown
 storm-control action trap
 spanning-tree portfast
 spanning-tree guard root
!