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Cisco Bug: CSCun05752 - DOC: ASA config guide - EDNS behavior

Last Modified

Nov 09, 2016

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

8.4 9.1

Description (partial)

DNSSEC / EDNS info in the ASA Configuration guide should be improved.

Several additional message-length maximum commands are available:
•The existing global limit (default): message-length maximum 512
•A client or server specific limit: message-length maximum client 4096 and message-length maximum server 4096
•The dynamic value specified in the OPT RR field: message-length maximum client auto
If the three commands are present at the same time, the ASA allows the automatically configured length up to the configured client or server maximum. For all other DNS traffic, the message-length maximum is used.
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