Protocol
RoCEv2
RDMA over Converged Ethernet v2
RDMA over UDP/IPv4/IPv6 on Ethernet: InfiniBand BTH follows the UDP header (port 4791). Routable across L3 with ECN/PFC/DCQCN for congestion management on lossless or near-lossless fabrics.
Tags
rdmaudp-4791bthcongestiondatacenter
Related protocols
RoCE v1
Lab readyRDMA over Converged Ethernet version 1 encapsulates InfiniBand verbs in Ethernet frames without IP/UDP headers. It is an L2-only design l…
RDMA Verbs
Lab readyKernel-bypass networking model: queue pairs, memory regions, and work requests move data between registered buffers with minimal CPU. Com…
InfiniBand
Lab readyLossless switched fabric with its own L2/L3 (LID/GID), subnet manager, and verbs transport (RC/UD/…). Credits, VLs, and partition keys pr…
PFC / ECN
Lab readyLossless and ECN tools for datacenter Ethernet: Priority Flow Control pauses individual priorities, while Explicit Congestion Notificatio…
DCQCN
Lab readyData Center Quantized Congestion Notification — RoCE congestion control that uses ECN marks and Congestion Notification Packets to rate-l…
Ethernet II
Lab readyUbiquitous LAN frame: 6-byte MACs, 2-byte EtherType, payload, and 32-bit FCS. Preamble/SFD precede the frame on the wire; 802.1Q inserts …
UDP
Lab readyUser Datagram Protocol — connectionless transport with ports and an optional checksum. It is the basis for DNS, RTP, QUIC, DHCP, and RoCE…