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Cisco Bug: CSCvt64696 - AAA RADIUS server connection failure

Last Modified

Aug 29, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.12(2.151)

Description (partial)

Symptom:
After some time all radius authentications fail and only a reboot temporarily fixes the problem.

Conditions:
RADIUS authentication is configured. During outage "show aaa-server" displays high RTT even though packet capture confirms that RADIUS servers replies almost immediately:

Server status: ACTIVE, Last transaction at XX:XX:XX UTC
Number of pending requests 255
Average round trip time 38643ms

In the debug radius/debug aas shim 255 we can also see similar errors:

radius mkreq: 0x80000002
alloc_rip 0x00002abeab552c60
free_rip 0x00002abeab552c60
ident_alloc failed
ioctl_mkreq fail
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Related Community Discussions
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