Gtpu cli reference

create gtpu tunnel

create gtpu tunnel src <local-tep-addr> {dst <remote-tep-addr>|group <mcast-addr> <intf-name>} teid <nn> [tteid <nn>] [encap-vrf-id <nn>] [decap-next [l2|ip4|ip6|node <name>]] [del | upd-tteid <nn>]

Add or delete a GTPU Tunnel.

GTPU can be used to transport Ethernet packets as its PDU type to provides allow L2 network or bridge domains (BDs) to span multiple servers. This is done by building an L2 overlay on top of an L3 network underlay using GTPU tunnels.

GTPU can also be used to transport IP packets as its PDU type to allow IP forwarding over underlay network, e.g. between RAN and UPF for mobility deployments.

Example of how to create a GTPU Tunnel:

create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 tteid 55 encap-vrf-id 7

Example of how to delete a GTPU Tunnel:

create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 teid 13 encap-vrf-id 7 del

Example of how to update tx TEID of a GTPU Tunnel:

create gtpu tunnel src 10.0.3.1 dst 10.0.3.3 encap-vrf-id 7 upd-tteid 55

Declaration: create_gtpu_tunnel_command src/plugins/gtpu/gtpu.c line 900

Implementation: gtpu_add_del_tunnel_command_fn

set flow-offload gtpu

set flow-offload gtpu hw <inerface-name> rx <tunnel-name> [del]

Declaration: gtpu_offload_command src/plugins/gtpu/gtpu.c line 1238

Implementation: gtpu_offload_command_fn

set interface ip gtpu-bypass

set interface ip gtpu-bypass <interface> [del]

This command adds the ‘ip4-gtpu-bypass’ graph node for a given interface. By adding the IPv4 gtpu-bypass graph node to an interface, the node checks for and validate input gtpu packet and bypass ip4-lookup, ip4-local, ip4-udp-lookup nodes to speedup gtpu packet forwarding. This node will cause extra overhead to for non-gtpu packets which is kept at a minimum.

Example of graph node before ip4-gtpu-bypass is enabled:

show vlib graph ip4-gtpu-bypass

           Name                      Next                    Previous
ip4-gtpu-bypass                error-drop [0]
                               gtpu4-input [1]
                                ip4-lookup [2]

Example of how to enable ip4-gtpu-bypass on an interface:

set interface ip gtpu-bypass GigabitEthernet2/0/0

Example of graph node after ip4-gtpu-bypass is enabled:

show vlib graph ip4-gtpu-bypass

           Name                      Next                    Previous
ip4-gtpu-bypass                error-drop [0]               ip4-input
                               gtpu4-input [1]        ip4-input-no-checksum
                                ip4-lookup [2]

Example of how to display the feature enabled on an interface:

show ip interface features GigabitEthernet2/0/0

IP feature paths configured on GigabitEthernet2/0/0...
...
ipv4 unicast:
  ip4-gtpu-bypass
  ip4-lookup
...

Example of how to disable ip4-gtpu-bypass on an interface:

set interface ip gtpu-bypass GigabitEthernet2/0/0 del

Declaration: set_interface_ip_gtpu_bypass_command src/plugins/gtpu/gtpu.c line 1052

Implementation: set_ip4_gtpu_bypass

set interface ip6 gtpu-bypass

set interface ip6 gtpu-bypass <interface> [del]

This command adds the ‘ip6-gtpu-bypass’ graph node for a given interface. By adding the IPv6 gtpu-bypass graph node to an interface, the node checks for and validate input gtpu packet and bypass ip6-lookup, ip6-local, ip6-udp-lookup nodes to speedup gtpu packet forwarding. This node will cause extra overhead to for non-gtpu packets which is kept at a minimum.

Example of graph node before ip6-gtpu-bypass is enabled:

show vlib graph ip6-gtpu-bypass

           Name                      Next                    Previous
ip6-gtpu-bypass                error-drop [0]
                               gtpu6-input [1]
                                ip6-lookup [2]

Example of how to enable ip6-gtpu-bypass on an interface:

set interface ip6 gtpu-bypass GigabitEthernet2/0/0

Example of graph node after ip6-gtpu-bypass is enabled:

show vlib graph ip6-gtpu-bypass

           Name                      Next                    Previous
ip6-gtpu-bypass                error-drop [0]               ip6-input
                               gtpu6-input [1]        ip4-input-no-checksum
                                ip6-lookup [2]

Example of how to display the feature enabled on an interface:

show ip interface features GigabitEthernet2/0/0

IP feature paths configured on GigabitEthernet2/0/0...
...
ipv6 unicast:
  ip6-gtpu-bypass
  ip6-lookup
...

Example of how to disable ip6-gtpu-bypass on an interface:

set interface ip6 gtpu-bypass GigabitEthernet2/0/0 del

Declaration: set_interface_ip6_gtpu_bypass_command src/plugins/gtpu/gtpu.c line 1109

Implementation: set_ip6_gtpu_bypass

show gtpu tunnel

show gtpu tunnel

Display all the GTPU Tunnel entries.

Example of how to display the GTPU Tunnel entries:

show gtpu tunnel

[0] src 10.0.3.1 dst 10.0.3.3 teid 13 tx-teid 55 encap_fib_index 0 sw_if_index 5 decap_next l2

Declaration: show_gtpu_tunnel_command src/plugins/gtpu/gtpu.c line 940

Implementation: show_gtpu_tunnel_command_fn