Product Bulletin - EPL1
This technical guide provides instructions and optical specifications for connecting your enterprise or service provider equipment to our high-performance Ethernet Private Line 1 Packetized Transport Service.
EPL1-100G
Our network delivers handoffs using a 400G breakout topology (400G-QSFP-DD split into 4x 100G QSFP28 interfaces). Each 100G handoff is provisioned as a Point-to-Point, Transparent Layer 2 Circuit, designed to pass customer frames between two 100G ports unaltered.
Provider Optics: OSOFiber will use 400GBase-DR4 Optics broken out into 4x100G LC connectors as the customer demarcation point.
Customer Optics: Customer must use a 100GBase-DR, Single-Lambda, Duplex-LC transceiver to correctly interop with the Provider Optics.
EPL1-10G
Coming Soon!
Common to All EPL1 Products
Design
All EPL1 products are designed according to IEEE 802.1ad, commonly known as a VLAN-Based Q-in-Q Provider Bridge environment. The network presents an "S-VLAN" (Service VLAN) handoff to the Customer. Customer traffic entering the handoff port is treated as "C-VLAN" (Customer VLAN) payload, and is encapsulated with a top-level or outside Provider Tag (S-Tag, TPID 0x88A8).
Maximum Transmission Unit (MTU)
- Standard Frame Support: Up to 9,000 Bytes (Jumbo Frames).
- Requirement: Configure your connecting interface MTU between 1500 and 9000 bytes.
- Recommendation: Use a 1500 MTU.
OSOFiber MTU is configured to accommodate a 9000-byte payload plus up to 22 bytes of headers. If you set your MTU to greater than 9000 bytes, you may experience fragmentation, drops, low packet throughput, or other traffic flow issues.
Layer 2 Control Protocol Transparency
In our EPL1 product, Layer 2 Control Protocols (L2CP) are generally dropped or ignored and are NOT forwarded across the service transparently. This may be updated on the V1 product prior to commissioning - we are actively working on it!
STP/BPDU: BPDUs are dropped. This action should be acceptable, as the EPL1 product is delivered as point-to-point exclusively.
CDP/VTP/UDLD: Dropped
LLDP: Dropped
LACP: Dropped
802.1X: Discard
FlowControl: Dropped/Ignored
