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Cisco Bug: CSCup56792 - Supporting 4 byte DTLS header

Last Modified

Apr 18, 2019

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

This bug is raised to track the migration of DTLS header from 1 byte to 4 bytes to improve performance.


Related Community Discussions

VPN Phones Fail to Connect via IOS 15.3 SSL VPN (webvpn) Gateway - Solution
If you have deployed or are deploying VPN phones using IOS Router SSL VPN and the router is or being upgraded to IOS 15.3(x), and IOS-XE 3.3, then you will most likely run into the problem described below which causes the the phone to start the negotiate the VPN but fail during the DTLS phase. If the phone debug log shows this error: VPNC: -process_login: login failed, 'webvpn=' not found in cookie Then it's most likely you have this same problem. The fix is contrary to the configuration procedures ...
Latest activity: Aug 02, 2016
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