Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
Context Configuration Mode Commands
gtpp max-pdu-size ▀
Cisco ASR 5000 Series Command Line Interface Reference ▄
OL-22948-01
gtpp max-pdu-size
Configures the maximum payload size of a single GTPP packet that could be sent by the system.
Product
GGSN, SGSN
Privilege
Security Administrator, Administrator
Syntax
Default: 4096
Specifies the maximum payload size of the GTPP packet. The payload includes the CDR and the GTPP
header.
Specifies the maximum payload size of the GTPP packet. The payload includes the CDR and the GTPP
header.
is measured in octets and can be configured to any integer value from 1024 to 65400.
Usage
The GTPP packet contains headers (layer 2, IP, UDP, and GTPP) followed by the CDR. Each CDR contains
one or more volume containers. If a packet containing one CDR exceeds the configured maximum payload
size, the system creates and send the packet containing the one CDR regardless.
The larger the packet data unit (PDU) size allowed, the more volume containers that can be fit into the CDR.
The system performs standard IP fragmentation for packets that exceed the system‘s maximum transmission
unit (MTU).
one or more volume containers. If a packet containing one CDR exceeds the configured maximum payload
size, the system creates and send the packet containing the one CDR regardless.
The larger the packet data unit (PDU) size allowed, the more volume containers that can be fit into the CDR.
The system performs standard IP fragmentation for packets that exceed the system‘s maximum transmission
unit (MTU).
Important:
The maximum size of an IPv4 PDU (including the IPv4 and subsequent headers) is 65,535. However,
a slightly smaller limit is imposed by this command because the system‘s max-pdu-size doesn't include the IPv4 and
UDP headers, and because the system may need to encapsulate GTPP packets in a different/larger IP packet (for sending
to a backup device).
UDP headers, and because the system may need to encapsulate GTPP packets in a different/larger IP packet (for sending
to a backup device).
Example
The following command configures a maximum PDU size of 2048 octets:
The following command configures a maximum PDU size of 2048 octets: