ETU Service Card (Ethernet Tributary Unit)

The ETU Service Card terminates Ethernet services and maps them into OTN containers for efficient transport across HYD optical platforms. Designed for metro aggregation, DCI on-ramps, and enterprise backbones, it supports flexible port mixes (GE/10GE/25GE/100GE) and encapsulates traffic using GFP-F with ODUk/ODUflex grooming or direct OTU mapping (e.g., 100GbE→OTU4). Hardware-assisted QoS and carrier OAM ensure predictable performance, while LSO/NMS integration streamlines provisioning and assurance. The card installs into HYD 1U/2U/5U chassis and pairs with coherent line cards (100G/200G/400G) and optical modules (MUX/DEMUX, EDFA/Raman, OLP, OCM/OTDR) for end-to-end service delivery.

• Client ports (model-dependent):

  • 24×GE (SFP), 8×10GE (SFP+), 8×25GE (SFP28), 2×100GE (QSFP28)

• OTN mapping: GFP-F, ODU0/1/2/2e/3/4/ODUflex, 100GbE→OTU4; multi-service muxponder modes (e.g., N×10/25G→ODUflex/OTU)

• Timing/OAM: SyncE, IEEE 1588v2 (T-BC/T-TC, model-dep.), 802.1ag/Y.1731, 802.3ah link OAM

• L2 features: VLAN/Q-in-Q, CoS/DSCP classification, traffic shaping/policing, LACP, LLDP

• Test & PM: PRBS, near/far loopback, RFC-style service turn-up (Y.1564), 15-min/24-h performance counters, alarms/events

• Reliability: Client 1+1 port protection, LFP, LOS/LOF trigger; platform OLP 1+1 on line side

• Management: NMS/Web/CLI/SNMP, Netconf/YANG; templates & zero-touch profiles

• Form factor & power: Hot-swappable card for HYD 1U/2U/5U; −48 VDC via backplane; low power