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Why VOLTHA is needed in todays time? How does it work?
- 1. VOLTHA VIRTUAL OLT HARDWARE ABSTRACTION
- 2. TO DO: Components of PON Networking? Issues in PON and Solution. Why VOLTHA came into picture? What is SEBA? What is VOLTHA? How it is related to PON? 2
- 3. FTTX architecture: CORE NETWORK In FTTX: X could be anything like office, curb, home etc. Central Unit/Office: which will have OLT/OLTs ONU OLT OLT OLT OLT OLT Gateway X • All the devices will be vendor specific/ proprietary. • You can not program all the devices (non programmable devices). • Expensive hardware + Operations (High Capex and Opex) • Lack of agility is present due to closed non-programmable devices • SDN is required to manage hardware by creating a closed group for OLTs with the help of software. 3
- 4. SEBA Introduction: SEBA: SDN enabled broadband access. The existing OLT in PON network will be bifurcated into two major components: 1) White BOX OLT: Hardware that will be necessary to terminate any optical connection. 2) Software Stack: VOLTHA. 4
- 5. 5 White box OLTs Open Flow Agent Net Conf OMCI Stack OLT APIs VOLTHA OLT disaggregation into VOLTHA: AAA Mcast VLANs ONOS: SDN Controller OpenFlow NetConf … 1) White box OLT will be connected via adapter. 2) VOLTHA will implement bunch of abstractions (below mentioned) on the top of OLT: • OMCI Stack • OLT APIs 3) VOLTHA’s north bound will communicate with Open Flow and Net Conf which will make it look like a switch. 4) Devices which are like switch, can be managed by ONOS software. It will be able to make the whole PON architecture programmable like traditional open flow tables. 5) On the topmost, ONOS will be able to run variety of operations like VLAN, multicast , AAA etc.
- 6. 6 VOLTHA architecture: • Modularized to abstract as much as hardware • It can work with vendor specific OLTs/ White-box OLTs/ vendor specific ONTs with the help of their respective adapter. • VOLTHA core will handle all the configuration part which will include logging, OMCI stack etc
- 7. Working of VOLTHA: 7 • VOLTHA model will activate the OLT. • After activation, OLT will send its information about configuration. • VOLTHA will create a hardware abstraction with OLT by including its 4 NNI ports and will start acting like a switch. • Then, this will be further communicated to the ONOS as it understands the switch. • All the further port links will be connected similarly afterwards with ONOS.
- 8. Thank You!