Symptom
A Nexus 5000 switch may see a crash in the "fwm" (forwarding manager) process when configuring an ERSPAN destination session. Eg:
configure terminal
monitor session x type erspan-destination
destination interface Ethernetx/x
%FWM-2-FWM_ASSERT_FAILURE: ../platform/nuova/forwarding-sw/server/fwm_fu.c.XXXX assertion '(fwm_batching_info->fwm_batching_enabled == FALSE) && (fwm_batching_info->fwm_nested_batches == 0)' stack [0xXXXXXXXX...
%SYSMGR-2-SERVICE_CRASHED: Service "fwm" (PID XXXX) hasn't caught signal 6 (core will be saved).
%SYSMGR-2-HAP_FAILURE_SUP_RESET: System reset due to service "fwm" in vdc X has had a hap failure
Conditions
ERSPAN destination is being configured on the Nexus 5k.
Workaround
Avoid configuring ERSPAN destination on this platform, as it is not supported. See:
http://www.cisco.com/c/en/us/support/docs/switches/nexus-5000-series-switches/113501-nexus5000-erspan-config.html#backinfo
Further Problem Description
Starting in NX-OS 7.0(0)N1(1) and later, when a user attempts to configure ERSPAN destination on a Nexus 5000 switch, the message "Erspan termination is not supported on this platform" will be printed and the configuration will be ignored.
