Controlplane vs dataplane how to#
Controlplane vs dataplane Offline#

Ĭonnection setup signaling protocols such as RSVP will be used to set up the EOP, reserve the resources, and possibly to fine-tune the connection parameters after it has been established.ĭistributed topology dissemination protocols such as OSPF or ISIS will be used to disseminate impairment information and spectrum availability and to allow the first node on the path to decide on the route, frequency slot, and connection parameters.The main control plane protocols that are likely to play a role for EON are: This fine-tuning process is likely to occur using control plane signaling. Once the two endpoints decide on first-order parameters like modulation format, they can refine second-order parameters, like the spacing between channels inside a superchannel.

Controlplane vs dataplane how to#

Conceivably, this decision can be refined via trial and error: the control plane decides on some rough connection parameters and establishes the connection the receivers at both endpoints measure connection performance (BER) and other metrics (CD, PMD, SNR, etc.) and decide how to tweak the connection parameters: if the BER is too high to guarantee the quality of the connection, it is improved, say, by changing the modulation format to a more robust one on the other hand, if the BER is very low, then it may be possible to improve the use of spectrum by moving to a more efficient modulation format, while still keeping the BER below the required maximum. Either way, it must be aware of the network topology, the different fiber characteristics, the spectrum utilization, and the design rules that dictate how to select connection parameters. The control plane could be fully distributed, or rely on a centralized path computation engine (PCE).

Controlplane vs dataplane Offline#

The control plane is most suitable to fully unlock the value of EON, because a truly adaptive network must base its decisions on actual measured data from the network and not on offline information in planning tools, or stale information in management systems (both of which are common practice today).

Extracting control information from L2-元 bridging data in the packet and notification of the data plane thereof.Ori Gerstel, Masahiko Jinno, in Optical Fiber Telecommunications (Sixth Edition), 2013 14.2.3.2 Control plane aspects.

Collection of statistics from the data plane is a function of the control plane.

Packets that are sent to the route processor for forwarding decision are the domain of the control plane.

Some traffic cannot be switched/forwarded in hardware.

In addition to the management of internal data and control circuits that govern the packet forwarding functions, here are other special considerations for the control plane: The decisions made at this layer are informed by the control plane.

Incoming IP packets are accepted into the router via the data plane, rewritten, and forwarded out their destination interface.

Data Plane: The realm of production traffic, this is largely aligned with hardware, which is optimal because it processes traffic much quicker than the CPU/memory.

The control plan, via its routing table, informs the packet forwarding decisions made by the data plane. Signaling and message exchange with routing protocol neighbors happens here.

Control Plane: Largely associated with RAM or memory, aligns with the characteristics of an EIGRP topology table or OSPF database.