Hierarchy Level (QFX5000 line of switches)
Hierarchy Level (QFX10000 line of switches)
Statement introduced in Junos OS Release 15.1F3 and 16.1R2.
When you configure gtp-tunnel-endpoint-identifier, the hash calculation of IPv4 or IPv6 packets are included in the GPRS tunneling protocol–tunnel endpoint ID (GTP-TEID) field hash calculations.
The gtp-tunnel-endpoint-identifier configuration statement is supported on PTX Series routers only when network services is set to enhanced-mode. For more information, see enhanced-mode.
On the QFX5000 and QFX10000 lines of switches, if the gtp-tunnel-endpoint-identifier statement is configured, the default Layer 4 port 2152 (and 2123 as well on QFX5000) is set to use along with the default first byte 0x32.
(On the QFX5000 line of switches only) In most cases, configuring the gtp-tunnel-endpoint-identifier statement on QFX5000 switches is sufficient for enabling GTP hashing. After you have enabled GTP hashing, if GTP hashing does not work, we recommend that you capture the packets using relevant tools and identify the offset value. As per standards, 0x32 is the default header offset value. But, due to some special patterns in the header, offset may vary to say 0x30, 0x28, and so on. In these cases, use the gtp-header-offset statement to set a proper offset value. Once the header offset value is resolved, run the gtp-tunnel-endpoint-identifier command for enabling GTP hashing successfully. Refer to gtp-header-offset for more details.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.