Symptom: A Cisco 2204XP or 2208XP Fabric Extender (FEX) experiences a power-down condition while the rest of the chassis is still receiving power.
Conditions: In very rare instances a Cisco UCSM chassis during normal system operation, regardless of the load on the blade or the system, can experience a power-down condition on one of its IO-Modules (IOM).
Workaround: There is no work-around for this issue. Affected customers should call technical support to replace the part that failed.
Additionally upgrade process may be impacted due to low memory available.
Conditions: This has been experienced in a UCS environment running 2.1(1a). The decodes of the crash point to a memory leak in the BMCD process:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 458 0.0 38.2 118240 98052 ? Sl 2012 481:44 bmcd -F
Workaround: It's best to upgrade to get past this issue.
It's possible to restart the bmcd process to temporarily fix the memory leak. This can provide days/weeks and maybe months until the out of memory condition occurs. Contact TAC to do this. This can be a strategy to avoid any operational impact until a software upgrade window. Note: If free memory is too low it will impact software update.
Further Problem Description: Information about CPU and memory usage can be obtained from UCS CLI via: connect IOM X (where X is the number of chassis) show platform software cmcctrl process info show platform software cmcctrl process meminfo
Specifically for this bug: show platform software cmcctrl process info | i bmc memory utilization should show below 15% in a healthy environment. (4th column)
show platform software cmcctrl process meminfo | i MemFree Should show above 16MB of memory free (~16384 kB) in a healthy environment.
Topology & Design:
Two ACI fabrics
Stretching VLANs using OTV
Both fabrics are advertising BD subnets into same routing domain
Some BDs(or say VLANs) are stretched, but some are not.
Endpoints can move betwee...
VMware Trunk Port Group is supported from ACI version 2.1
VMM integration must be configured properly
ASA device package must be uploaded to APIC
ASAv version must be compatible with ACI and device package version
Topology &Design:Traffic flow within same fabric:Endpoint moves to Fabric-2Bounce Entry Times OutTraffic Black-holedSummarySolutionAppendix:
In the Previous articles of ACI Automation, we are using Postman/Newman a...