Skip to content

F5

Commands Containing bash Require Admin Rights

Known affected software versions: all

Result: Some commands require bash access - this needs administrative permissions. Otherwise they cannot be executed. - run util bash -c uptime - for device uptime - run util bash -c "ntpq -np" - for NTP peer server communications - run util bash -c "tmsh list sys snmp all-properties" - for SNMP information - run util bash -c "clsh tmsh show sys hardware" - for hardware information, admin access is needed when cluster is present to list multiple blades.

Long Timeout for show ltm virtual details Command

Known affected software versions: all

Description: The show ltm virtual details command may hang for a significant period before sending any response back to the user, which can cause the discovery process to stop.

Result: Some F5 devices might not be discovered.

Fix: In the CLI, test the duration required to retrieve data for this command. Update the network device session timeout accordingly.

Long or Infinite Discovery Due to restjavad Frequent Restarts Because of Insufficient Memory

Affected product: BIG-IP TMOS

Known affected software versions: See the F5 documentation.

Description: The show ltm virtual details command may cause the restjavad daemon on F5 to restart frequently due to insufficient memory, resulting in long or infinite discovery.

Result: Some F5 devices might not be discovered.

Fix: Increase the memory allocated for the restjavad process. See F5 Bug ID 776393.

SNMP Passphrases Appear to Change Each Time During Configuration Backup

Affected versions: all versions below 14.1.0

Description: When SNMPv3 users are configured with authentication and privacy passwords, the encrypted password displayed in TMSH appear to change each time they are displayed. The same applies when retrieving the configuration file using the cd /;show running-config recursive command.

Environment:

  • TMSH
  • SNMPv3
  • Encrypted passwords

Result: IP Fabric considers every new F5 configuration file as changed.

Fix: Upgrade to a fixed version as noted in Bug ID 532181.

F5 Device Fails To Be Discovered Due to ASM out of memory error

Affected versions: all

Description: When IP Fabric issues the show ltm virtual recursive command, Error Message: ASM out of memory error: event code X242/X260 Exceeded maximum memory assigned for XML/JSON processing appears, which halts the discovery process for the device.

Environment:

  • ASM Policy configured to process XML Requests
  • XML requests are not processed
  • At the time of the issue, logs like Cannot allocate x more bytes for XML parser. current memory size y (in bytes) appear in /var/log/ts/bd.log and logs like ASM out of memory error: event code X242/X260 Exceeded maximum memory assigned for XML/JSON processing appear in /var/log/asm

Result: IP Fabric fails to discover the device.

Fix: Mitigation steps can be found on F5’s page K22526837.

Disk partition shared has only x % free Message Causes Infinite Discovery

Affected versions: all

Description: During discovery, if the device’s disk is full, it issues a syslog message to the shell every 3 minutes, but the default timeout for discovery is 5 minutes. This causes the discovery process to never finish.

Environment:

  • Disk space
  • High utilization

Result: IP Fabric discovery never finishes.

Fix: Mitigation steps can be found on F5’s page K15485103.