OcNOS 6.4 for Data Centers: gNMI Telemetry, EVPN Policy Control, and OpenConfig

OcNOS 6.4 for Data Centers is now generally available. This release focuses on operational visibility and policy precision — two requirements that define mature data center NOS deployments at scale. The headline addition is gNMI-based streaming telemetry with OpenConfig YANG models, giving DC operators real-time insight into fabric state using standardized, vendor-neutral interfaces.

gNMI Streaming Telemetry with OpenConfig

OcNOS 6.4 DC supports gNMI server dial-in mode — network monitoring systems subscribe to OcNOS data center switches and receive real-time streaming data using OpenConfig YANG data models. This is the industry-standard path away from SNMP polling toward event-driven network observability.

! OcNOS 6.4 DC -- gNMI OpenConfig subscription
!
telemetry
  subscription FABRIC-OC
    protocol gNMI
    encoding JSON_IETF
    sensor-group OC-INTERFACES
      ! OpenConfig standard path -- works with any gNMI collector
      path openconfig:/interfaces/interface[name=*]/state/counters
      path openconfig:/interfaces/interface[name=*]/state/oper-status
    !
    destination-group COLLECTOR
      address 10.100.0.50 port 57400
    !
    sample-interval 10000             ! 10-second samples for counters
  !
  subscription FABRIC-EVENTS
    sensor-group OC-BGP
      path openconfig:/network-instances/network-instance[name=*]/protocols/protocol/bgp/neighbors/neighbor[neighbor-address=*]/state/session-state
    !
    destination-group COLLECTOR
    sample-interval 0                 ! On-change for BGP session events
  !

EVPN Route Target Filtering

OcNOS 6.4 DC introduces Route Target (RT) filtering for EVPN-VXLAN deployments. In large multi-tenant fabrics with many VNIs, selective RT import and export controls prevent unnecessary route propagation, reduce control-plane memory consumption, and improve BGP convergence speed.

! OcNOS 6.4 DC -- EVPN RT filtering for multi-tenant isolation
!
router bgp 65001
  address-family l2vpn evpn
    !
    ! Import only specific RT communities from this neighbor
    neighbor 10.0.0.2 route-map RT-FILTER in
    !
    ! Export specific VNIs to DCI peers only
    neighbor 10.200.0.1 route-map DCI-EXPORT out
  exit-address-family
!
route-map RT-FILTER permit 10
  match extcommunity RT-LIST
!
ip extcommunity-list RT-LIST permit rt 65001:10001
ip extcommunity-list RT-LIST permit rt 65001:10002
!
! Verify RT filtering is active:
show bgp l2vpn evpn summary
show bgp l2vpn evpn route type prefix detail | include RT

Selective Packet Mirroring

OcNOS 6.4 DC introduces selective mirroring to CPU with intelligent filtering. Operators can capture specific traffic flows for analysis directly within the fabric — without external tap hardware or dedicated capture infrastructure.

! OcNOS 6.4 DC -- Selective packet mirroring
!
monitor session 1
  source interface Ethernet1/1 rx
  filter access-group MIRROR-FILTER
  destination cpu
!
ip access-list MIRROR-FILTER
  permit ip 10.10.1.0/24 any       ! Mirror traffic from specific subnet
  permit udp any any dst-port 4789 ! Mirror VXLAN-encapsulated frames
!
show monitor session 1
show capture buffer statistics

• OcNOS 6.4 for Service Providers
• OcNOS 6.4 Release Overview
• OcNOS-DC Product Page
• Contact IP Infusion

IP Infusion Product Team