2.16. GRE

These log messages refer to the GRE category.

2.16.1. [ID: 1650] GRE packet without any payload after GRE[...]

Log Categories
GRE
Log Message
GRE packet without any payload after GRE header.
Default Log Severity
Warning
Parameters
flow, pkt, user, userid
Explanation
Received a GRE packet without any payload after the GRE header.
Gateway Action
Drop
Action Description
None
Proposed Action
None

2.16.2. [ID: 1651] Mismatch between the GRE payload protocol[...]

Log Categories
GRE
Log Message
Mismatch between the GRE payload protocol type and the payload IP version.
Default Log Severity
Warning
Parameters
proto, ipver, flow, pkt, user, userid
Explanation
Received a GRE packet with header protocol type and payload IP version mismatch.
Gateway Action
Drop
Action Description
None
Proposed Action
None

2.16.3. [ID: 1649] Failed to reassemble fragmented GRE packet

Log Categories
GRE,FRAG
Log Message
Failed to reassemble fragmented GRE packet.
Default Log Severity
Warning
Parameters
pktlen, flow, pkt, user, userid
Explanation
The packet was fragmented and could not be reassembled.
Gateway Action
Drop
Action Description
None
Proposed Action
None

2.16.4. [ID: 1647] Unsupported GRE flags

Log Categories
GRE
Log Message
Unsupported GRE flags.
Default Log Severity
Warning
Parameters
flags, flow, pkt, user, userid
Explanation
Received a GRE packet with unsupported flags. Only support "checksum present", "key present", "sequence number present" flags.
Gateway Action
Drop
Action Description
None
Proposed Action
Check GRE endpoint configuration.

2.16.5. [ID: 1652] Unsupported GRE payload protocol type

Log Categories
GRE
Log Message
Unsupported GRE payload protocol type.
Default Log Severity
Warning
Parameters
proto, flow, pkt, user, userid
Explanation
Received a GRE packet with unsupported payload protocol type. Only IPv4 (0x0800) and IPv6 (0x86DD) are supported.
Gateway Action
Drop
Action Description
None
Proposed Action
None

2.16.6. [ID: 1648] Unsupported GRE version

Log Categories
GRE
Log Message
Unsupported GRE version.
Default Log Severity
Warning
Parameters
version, flow, pkt, user, userid
Explanation
Received a GRE packet with unsupported version. Only version 0 is supported.
Gateway Action
Drop
Action Description
None
Proposed Action
None