ASIC and platform
Record the exact 7050/7060/7280/7500R variant and interface hardware.
Compatibility engineering brief
Arista Optical Module Compatibility Engineering
Arista fabric ports are defined by ASIC generation, EOS and port profile as much as by the printed optic code. Approval must reproduce the intended lane and peer configuration.
Arista platforms often expose flexible port profiles. The same QSFP cage can operate as native high speed or as multiple child lanes, so the exact EOS configuration must be part of the optical approval.
At 100G and 400G, a recognized module can still fail because the peer, FEC or breakout map differs. Lane-level power and sustained error counters are therefore more useful than a single “up” state.
MingApex supplies independently sourced third-party optics and coordinates coding/QC; it does not represent Arista manufacture or endorsement.
01 / Scope record
Freeze the exact approval record before selecting a code
Freeze the Arista switch, ASIC, EOS, port profile and peer as one approval tuple.
| Required field | What to record | Why it changes the result |
|---|---|---|
| Host model / hardware | Exact Arista switch and port ASIC: for example 7050, 7060, 7280 or 7500R family with module/line-card identifier. | Support can differ by chassis, line card, ASIC and port cage. |
| Software version | Exact EOS release, transceiver qualification behaviour and any platform-specific port-profile configuration. | Allow-lists, alarms, breakout and FEC behaviour can change by release. |
| Port mode | Configured speed, lane count, breakout map and peer interface for the named Ethernet port. | A physical cage may expose several mutually exclusive speed or breakout modes. |
| FEC policy | Operational FEC state for 25G, 100G, 200G or 400G, including the peer requirement. | The wrong FEC policy can leave a recognized module without a stable link. |
| DOM / DDM | EOS transceiver detail output, lane-level optical power where available, thresholds and alarm state. | Recognition alone does not prove valid telemetry, thresholds or alarm reporting. |
| Coding identity | Approved Arista-oriented vendor fields, part-number presentation, serial identity and checksum profile. | Vendor fields and part-number identity must match the approved coding profile. |
| Sample boundary | Serialized sample tested on the named EOS host, port profile, peer and traffic pattern. | A result belongs to the tested unit and named host tuple unless the scope says otherwise. |
02 / Technical checks
What must be checked on the named platform
Arista review concentrates on lane mapping and operational evidence under the intended EOS profile.
EOS baseline
Capture full EOS build and the applied port-profile configuration.
Lane mapping
Verify native or breakout lane allocation at both ends of the link.
FEC agreement
Compare configured, negotiated and peer-required FEC.
Lane DOM
Read per-lane optical power and alarms where the platform exposes them.
Load test
Monitor symbol/FEC/CRC counters and link stability during representative traffic.
03 / Catalogue anchors
Live product examples for a controlled starting point
These high-speed families are starting points for EOS port-profile review, not blanket Arista approvals.
Verified live product page100G QSFP28 SR4 100m MPO Transceiver100G multimode and MPO port-mode referenceVerified live product page100G QSFP28 CWDM4 2km LC Transceiver100G 2km and host-FEC review referenceVerified live product page100G QSFP28 Passive DAC CableShort-reach copper coding and port referenceVerified live product page400G QSFP-DD DR4 500m MPO Transceiver400G parallel-SMF and breakout referenceVerified live product page400G QSFP-DD FR4 2km LC Transceiver400G duplex-LC and RS-FEC reference
These products are technical starting points. A product page or programmed code is not evidence of blanket host support.
04 / Validation
Named-host sample and production-release workflow
Reproduce the exact lane map and peer behaviour in the sample test, then preserve coding and optical identity for the production lot.
- 1
Freeze the host tuple
Record the exact device, chassis or line card, software release, port identifier and intended link role for Arista compatibility.
- 2
Confirm physical and protocol fit
Match form factor, line rate, reach, wavelength, fibre, connector, breakout mode and required FEC before coding.
- 3
Program and identify the sample
Lock vendor fields, part number, serial format, DOM profile and sample identity so the tested unit can be traced.
- 4
Test on the named host
Record recognition, link state, DOM, alarms, error counters, FEC status and traffic stability for the stated software baseline.
- 5
Bridge sample approval to the lot
Release production only when coding identity, optical checks, labels and change-control records remain tied to the approved sample and order line.
05 / Decision patterns
Common approval scenarios and their limits
Native ports, breakouts, mixed peer vendors and high-speed FEC create different approval paths.
Native 100G fabric
Validate the exact ASIC, EOS and peer with sustained traffic.
4×25G breakout
Prove all child lanes, cable mapping and child-interface counters.
400G leaf–spine
Lock RS-FEC, lane power and thermal behaviour on both ends.
Mixed-vendor peer
Record each side independently; one host result does not approve the other.
06 / Buyer evidence
Compatibility evidence pack
Use these redacted records to define what must be captured for the exact host, sample and order line.
07 / Risk control
Failure modes to remove before production approval
Port-profile mismatch
A correct optic cannot fix an incompatible lane configuration.
Peer FEC disagreement
Both ports may recognize modules while the link remains unstable.
Single-lane evidence
One good lane does not approve an MPO or DR4 multi-lane path.
EOS revision drift
Operational defaults and diagnostics can change after upgrade.
08 / Buyer questions
Compatibility-specific questions
Is EEPROM recognition enough on Arista?
No. Validate EOS, port profile, lane map, peer FEC, DOM and traffic counters.
Can one 100G result cover 400G breakout?
No. The form factor family may overlap, but lane count, FEC and port profile are different approval conditions.
Should the peer be recorded?
Yes. The peer optic, host and FEC policy can determine whether the Arista link is stable.
What evidence should accompany approval?
Keep EOS output, port configuration, DOM, counters, sample serial and the exact tested cable or fibre path.
Controlled next step
Send the Arista EOS port profile and peer—not only the optic code.
MingApex will define the exact Arista lane, FEC, sample and production identity boundary for quotation.