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Cisco Bug: CSCtc34915 - 2941: Tunnel checksum does not work when tunnel key option configured

Last Modified

Jan 30, 2017

Products (1)

  • Cisco MWR 2900 Series Mobile Wireless Routers

Known Affected Releases


Description (partial)


Packets sent across a GRE tunnel do not include a checksum in the GRE header even though <CmdBold>tunnel checksum<noCmdBold> is configured.


The issue only occurs on Cisco IOS Release 12.4(20)MR when both <CmdBold>tunnel checksum<noCmdBold> and <CmdBold>tunnel key<noCmdBold> are configured on a tunnel interface.
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