面向数据中心的 OcNOS 6.4：gNMI 遥测、EVPN 策略控制与 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 streaming telemetry
!
! OcNOS builds a subscription from three separate top-level objects:
! a sensor-group, a destination-group, and a subscription-name that binds them.
configure terminal
!
feature streaming-telemetry
!
sensor-group OC-INTERFACES
  sensor-path /interfaces/interface/state/counters
  sensor-path /interfaces/interface/state/oper-status
  exit
!
destination-group COLLECTOR
  tunnel-server ip 10.100.0.50 port 9339
  exit
!
subscription-name FABRIC-OC
  sensor-group OC-INTERFACES sample-interval 10    ! seconds, not milliseconds
  destination-group COLLECTOR
  encoding json-ietf
  exit
!
commit
exit
!
! Verify:
show streaming-telemetry persistent-subscriptions brief
show streaming-telemetry persistent-subscriptions details

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
!
configure terminal
!
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 selected routes to DCI peers only
    neighbor 10.200.0.1 route-map DCI-EXPORT out
    exit-address-family
  exit
!
ip extcommunity-list RT-LIST permit rt 65001:10001
ip extcommunity-list RT-LIST permit rt 65001:10002
!
route-map RT-FILTER permit 10
  match extcommunity RT-LIST
  exit
!
commit
exit
!
! Verify RT filtering is active:
show bgp l2vpn evpn summary
show bgp l2vpn evpn prefix-route

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 (Ethernet SPAN)
!
configure terminal
!
monitor session 1 type local
  source interface xe1 rx
  destination interface xe48
  exit
!
commit
exit
!
! Verify:
show monitor session 1

IP Infusion Product Team