VN to VN이란 무엇인가? FCoE VN to VN(VN2VN)은 FCoE를 사용하여 두 개의 엔드 노드(ENode)를 직접 연결하는 T11의 새로운 제안 표준. ENode는 FC 또는 FCoE 스위치(FCF)에 연 결하지 않고 다른 원격 ENode를 사용해서 VN2VN 가상 링크를 만들 수 있으므로 포트 조닝과 고급 파이버 채널 서비스 모두 필요하지 않습니다. 스토리지 소프 트웨어는 LUN 마스킹을 사용하여 LUN의 액세스 및 보안을 제어합니다. VN2VN 패브릭은 ENode들 사이에 무손실 이더넷 스위치를 가질 수 있습니다. 따라서 여러 개의 ENode가 VN2VN 패브릭에 있는 둘 이상의 VN2VN 가상 링크를 만드는 데 참여할 수 있습니다. VN2VN의 작동 모드는 지점간(PT2PT)과 다지점 등 두 가지입니다. 참고: 작동 모드는 초기화 도중에만 사용됩니다.
The purpose of this article is to provide the best practice Fiber Channel implementation with S4810 as FSB and S5000 as FCF
What is FIP (FCoE Initialization Protocol)?
Fiber Channel over Ethernet initialization protocol (FIP) ensures a virtual point-to-point link between Enodes and Fiberchannel Forwarded switches over transit FCoE-enabled bridges.
The below mentioned steps are carried out by FIP.
Enode sends FIP VLAN Request to discover FCoE VLANs on All-FCoE-Forwarders MAC (01:01:18:01:00:02) Enode receives FIP VLAN Response from FCF. Enode sends FIP Solicitation to discover FCFs using well known MAC (01:01:18:01:00:02) FIP Solicitation contains information regarding Enode MAC, Enode WWNN and Enode FCoE frame size. Enode receives FIP Advertisement from FCF FIP Advertisement contains information like Priority, WWNN of FCF, Fabric Descriptor and FKA ADV Period. Enode sends FIP FC ELS FLOGI to address 0xFFFFFE Enode receives FC ELS ACC (FLOGI) from FCF.
What is FIP Snooping Bridge (FSB)?
It acts as a bridge between FCoE capable devices (CNAs) and the Fiber Channel Forwarder (FCF). It monitors the FIP frames and dynamically configures ACLs to permit authorized point-to-point traffic. It is also known as FCoE transit switch
What is FCF (Fiber Channel Forwarders)?
It is a combination of FCoE and FC switch. It accepts the connections from the FSB to pass through it and reach the Fiber Channel switch.
What is N_Port ID Virtualization (NPIV)?
This is a feature which helps multiple N_Port IDs to share a single physical N_Port.
What is Data Center Bridging (DCB)?
The Data Center Bridging mainly comprises of three factors.
Priority Flow Control (PFC) Enhanced transmission Selection (ETS) Data Center Bridging Exchange (DCBX)
What are the different types of ports?
N_Port (Node Port): A port on the End Node (Either Host or Storage)
F_Port (Fabric Port): A port on the FC switch which provides the necessary information to Node ports.
E_Port (Expansion Port): A port connected between FC switches to form an Inter-Switch Link.