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Understanding GTPv2 Message-Length Filtering


You can configure a device to drop GPRS tunneling protocol version 2 (GTPv2) packets that do not meet the specified minimum or maximum message lengths. In the GTPv2 header, the message length field indicates the length, in octets, of the GTPv2 payload. The message length does not include the length of the GTPv2 header itself, the UDP header, the TCP header, or the IP header.

The default minimum and maximum GTPv2 message lengths are 0 and 65,535 bytes, respectively. Therefore, you can specify the GTPv2 message length range from 0 to 65,535 bytes.