Gre Header Matches - Network Critical SmartNA-X User Manual

194 | IPP Module Preset Matches and Transforms | SmartNA-X 1G/10G Modular
Transport header port number matches
The following Matches can be used to match Transport headers. GTP is identified by port number and travels over UDP
(or optionally TCP for GTP version 2) TCP and UDP port numbers are in the same location in the header, so this works
for either.
Table 14: Transport header port number matches
Match name
Source-GTP-C-IPv4
Dest-GTP-C-IPv4
Source-GTP-U-IPv4
Dest-GTP-U-IPv4
Source-GTP'-IPv4
Dest-GTP'-IPv4
Source-GTP-C-IPv6
Dest-GTP-C-IPv6
Source-GTP-U-IPv6
Dest-GTP-U-IPv6
Source-GTP'-IPv6
Dest-GTP'-IPv6

GRE header matches

The following Matches can be used to match GRE or PPTP GRE headers using Key and Sequence fields (but not
Checksum, Routing or Acknowledgement). The GRE header contains many options. It has a length of 1-5 words.
Table 15: GRE or PPTP GRE header using Key and Sequence fields
Match name
GRE-KS-L=3-IPv4
GRE-KS-L=3-IPv6
Table 16: GRE headers using Checksum, Key and Sequence fields
Match name
GRE-CKS-L=4-IPv4
Match definition (start bit, width, value)
272, 16, 2123
288, 16, 2123
272, 16, 2152
288, 16, 2152
272, 16, 3386
288, 16, 3386
432, 16, 2123
448, 16, 2123
432, 16, 2152
448, 16, 2152
432, 16, 3386
448, 16, 3386
Match definition (start bit, width, value)
272, 9, 96
432, 9, 96
Match definition (start bit, width, value)
272, 9, 97
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SmartNA-X 1G/10G User Guide 1.4 2015 Network Critical Solutions Limited