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Cisco Bug: CSCvh72748 - Request to increase max allowable size of DNS message over UDP

Last Modified

Aug 19, 2019

Products (1)

  • Cisco TelePresence Video Communication Server (VCS)

Known Affected Releases

unspecified

Description (partial)

Symptom:
DNS requests that elicit large responses may not be processed by the Expressway.

Conditions:
Specific to DNS over UDP.  Limitation due to rfc1035 - section 2.3.4  (there is no such limitation with DNS over TCP)
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