First Published date: 8/12/16
Revised date: 8/18/16
Software Advisory
Impacted Releases:
Cisco APIC Releases 2.0(1m), 2.0(1n), 2.0(1o), 2.0(1p).
Cisco Nexus 9000 ACI-Mode Switch Releases 12.0(1m), 12.0(1n), 12.0(1o), 12.0(1p)
Bug ID: CSCva54489
Summary:
The infrastructure DHCP pool process does not get cleared after an upgrade to Cisco APIC release 2.0(1m). The following fault occurs: “F608160 [FSM:FAILED]: Task for updating pool (TASK:ifc::dhcpd:DhcpPoolUpdatePool)”. Under the policymgr logs, there are DHCP entries with an error description of "Parent not present to create PoolDef".
Workaround:
Downgrade the software to Cisco APIC Release 1.x, or completely wipe the Cisco ACI fabric, and specify a new TEP address pool in the setup script (/22 minimum).
Details:
This issue occurs when upgrading to or performing a new installation of Cisco ACI release 2.0(x) when the VTEP address block has a subnet mask that is equal to /23 or greater (for example /24).
If the VTEP address block has a subnet mask that is equal to /23 or greater (for example /24), the fabricSetupP managed object is not created, no default pod policy object is created, and the ASN/route reflector configuration is removed. As a result, all L3 Out routes received on a border leaf switch will not be redistributed to a non-border leaf switch, and all L3 Out traffic is dropped on the non-border leaf switch.
A fix for this issue is included in:
Currently a fix for this issue is not available on a 2.0(x) release. At this time it is advised that if the fabric has a VTEP address block with a subnet mask that is equal to /23 or greater (for example /24), do not upgrade to this release until a fix is available.