NGOAM

NGOAM (Next Generation OAM, also called VXLAN OAM) configuration manages the operations, administration and maintenance settings for VXLAN EVPN fabrics on NX-OS devices. install_acl installs the ACL that traps NGOAM packets to the supervisor, which is required for VXLAN OAM tools such as ping and traceroute over the overlay. Loop detection periodically sends probes on access ports to detect Layer 2 loops and blocks a port where a loop is found; after the port recovery interval the port is checked again and brought back up when the loop is gone. Loop detection requires the ing-sup TCAM region to be carved first. NGOAM requires feature ngoam.

Diagram

Classes

nxos

Name	Type	Constraint	Mandatory	Default Value
devices	List	devices	No
device_groups	List	device_groups	No
global	Class	global	No
templates	List	templates	No

devices (nxos)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

device_groups (nxos)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

global (nxos)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

templates (nxos)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

configuration (nxos.devices)

Name	Type	Constraint	Mandatory	Default Value
system	Class	system	No

system (nxos.devices.configuration)

Name	Type	Constraint	Mandatory	Default Value
ngoam	Class	ngoam	No

ngoam (nxos.devices.configuration.system)

Name	Type	Constraint	Mandatory	Default Value
install_acl	Boolean	true, false	No
loop_detection	Boolean	true, false	No
loop_detection_periodic_probe_interval	Integer	min: 60, max: 3600	No
loop_detection_port_recovery_interval	Integer	min: 300, max: 3600	No

Examples

Example 1: VXLAN leaf with the NGOAM ACL installed

nxos:
  devices:
    - name: LEAF1
      configuration:
        feature:
          ngoam: true
        system:
          ngoam:
            install_acl: true

Example 2: VXLAN leaf with NGOAM loop detection and tuned timers

nxos:
  devices:
    - name: LEAF2
      configuration:
        feature:
          ngoam: true
        system:
          hardware_access_list_tcam_region:
            ing_sup_size: 768
          ngoam:
            install_acl: true
            loop_detection: true
            loop_detection_periodic_probe_interval: 120
            loop_detection_port_recovery_interval: 900