Cisco Bug: CSCsg38930 - 7600 SPA-IPSEC-2G - Multicast data is not forwarded through GRE Tunnel
Jan 24, 2017
- Cisco IOS
Known Affected Releases
Symptoms: IP fragments may not be forwarded over an GRE tunnel when the tunnel is configured to go through an IPSEC-SPA-2G. These IP fragments may be dropped. Conditions: This symptom is observed on a Cisco 7600 series that has a Supervisor Engine 720 and an IPSEC-SPA-2G, and that runs Cisco IOS Release 12.2(18)SXF5 when the tunnel is configured in the following manner: - Path MTU Discovery (PMTUD) is enabled. - IPsec tunnel protection is enabled. - The <CmdBold>crypto engine slot<noCmdBold> <CmdArg>slot/subslot<noCmdArg> <CmdBold>inside<noCmdBold> command is enabled. The symptom may also affect other releases. The output of the <CmdBold>show crypto vlan<noCmdBold> command shows the VLAN that is associated with the crypto configuration.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases