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Cisco Bug: CSCvv25124 - 7800/8800 support for jumbo frames transmission

Last Modified

Aug 18, 2020

Products (1)

  • Cisco IP Phone 8800 Series

Known Affected Releases

12.7(1) 12.8(1)

Description (partial)

Symptom:
7800 and 8800 phone to support jumbo frames

Conditions:
Transmission of frames greater than 1500 bytes drops or not transmitted by phone to PC if connected to the phone.
 If DF bit is not set the frames will be broken up and still transmitted in smaller packets to the device connected on the PC port. The packets are not passed through the port if they are true jumbo packets.

In the vast majority of networks this is not going to be an issue.
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