NFV Usecase in OpenStack(vEPC)
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- ETSI NFV - EPC vs. vEPC - NFV Requirements - OpenStack Network for NFV - Problem & Solution
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NFV Usecase in OpenStack(vEPC)
- 1. NFV USECASE IN OPENSTACK 2015.11.10 Nicholas H. Park(nicholas.hpark@gmail.com)
- 2. Agenda ➤ ETSI NFV ➤ EPC vs. vEPC ➤ NFV Requirements ➤ OpenStack Network for NFV ➤ Problem & Solution
- 3. ETSI NFV ISG ➤ NFV 관련 기술의 산업 규격화 작업을 위해 전 세계 통신 사업자들을 중심으로 2012 년 11월 부터 활동 시작 ➤ 270개 이상의 회사와 38개의 Major 서비스 사업자 참여 ➤ 현재 NFV Phase 2 작업 진행중 ➤ http://www.etsi.org/technologies-clusters/technologies/nfv
- 4. ETSI NFV Architecture Our Scope
- 6. EPC vs. vEPC RNC eNB Iu S1-MME Wi-Fi S1-U 3G Core Billing System Gn/Gp Gr Gx Gi Gz Gs HLR SGSN GGSN PCRF MSC Evolved Packet Core MME S-GW P-GW S5/S8 S11 ePDG S5/S8 Internet/Applications vEPC on Cloud Infrastructure RNC eNB Iu S1-MME Wi-Fi S1-U Internet/Applications VNFC VNFC VNFC VNFC VNFC VNFC
- 7. NFV Requirements UTRAN/ E-UTRAN eNB UE PUBLIC LTE MME SGW PGW HSS PRIVATE LTE PGW INTERNET INTRANET COMPUTE NODE 1 COMPUTE NODE 2 MME SGW PGW HSS PGW UTRAN/ E-UTRAN eNB UE CONTROLLER NODE NETWORK NODE mgmt mgmt mgmt mgmteth0 INTERNET INTRANET eth1 eth2 eth1 eth2 eth1 EMS
- 9. Network Creation - External ➤ Create External Bridge Network
- 10. Network Creation - Tenant/Internal ➤ Create Tenant/Internal network Internal network and subnet creation $neutron net-create net0 $neutron subnet-create --name net0-subnet0 net0 10.0.0.0/24 S1C/S1U network and subnet creation $neutron net-create S1C-S1U $neutron subnet-create --name S1C-S1U—subnet S1C-S1U 192.168.16.0/27 S5C network and subnet creation $neutron net-create S5C $neutron subnet-create --name S5C-subnet S5C 192.168.13.0/27 S5U network and subnet creation $neutron net-create S5U $neutron subnet-create --name S5U-subnet S5U 192.168.12.0/27 SGi network and subnet creation $neutron net-create SGi $neutron subnet-create --name SGi-subnet SGi 192.168.15.0/27 Intranet network and subnet creation $neutron net-create intranet $neutron subnet-create --name intranet-subnet intranet 172.16.111.0/27
- 11. Network Creation - Tenant/Internal ➤ Create Tenant/Internal network
- 12. Network Creation - Router ➤ Create Router and add networks Router creation $neutron router-create ext-router Connect the router to external subnet by setting the gateway for the router as ext-router. $neutron router-gateway-set ext-router external $neutron router-interface-add ext-router net0-subnet0 S1C-S1U network and subnet creation $ NO NEED TO CONNECT S5C network and subnet creation $neutron router-interface-add ext-router S5C-subnet S5U network and subnet creation $neutron router-interface-add ext-router S5U-subnet SGi network and subnet creation $neutron router-interface-add ext-router SGi-subnet Intranet network and subnet creation $ NO NEED TO CONNECT
- 13. Problem ➤ UE(User Equipment, User Device)는 외부와 통신이 불가능 ➤ UE의 IP Address는 EPC 자체에서 할당하며, Neutron에서는 인지하지 못하는 Subnet(*NAT 처리 불가) ➤ Nova Instance(VNF)에 Address Pool중 임의의 IP를 추가로 할 당하면 IP 통신이 불가능 ➤ Neutron에서는 기본적으로 Anti Spoofing 정책이 적용되어 최초에 할당된 Fixed IP 이외에 임의 할당한 IP에 대한 Packet 처리 불가능
- 14. Neutron Solution ➤ UE network and subnet creation: $neutron subnet-create --name UE-Public-subnet SGi 10.37.0.0/24
- 15. Neutron Solution ➤ Network ports (“allowed_address_pair”) for VNF virtual IPs: $neutron port-show 4220c5ba-db2c-474b-8f27-c25ebc2ffd40 ➤ $neutron port-update 4220c5ba-db2c-474b-8f27-c25ebc2ffd40 ➤ —allowed_address_pairs list=true type=dict ➤ ip_address=172.100.10.20
- 16. THANK YOU!