Cisco ACI Software Advisory Notice for CSCva54489

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.