Dennis HilkLinux diagnosticsDE

Ethernet & networking

Intel I350 copper

I350 copper network functions use igb. Multiport adapters expose separate PCI functions, so identifying one function is not the same as identifying the complete card.

Editorial source review: Share public profileOpen in the identification tool
On this page
  1. Overview & identity
  2. Driver & binding
  3. Firmware
  4. Read-only diagnostics
  5. Limitations & related issues
  6. References

Overview & identity

1521 is named I350_COPPER in the reviewed header. Different I350 media identities and virtual functions must not be inferred from this physical-function pair.

Curated identifiers
pci 8086:1521

A numeric match establishes a candidate family within the reviewed evidence. Marketing names, board variants, subsystem conditions and successful operation remain separate questions.

Driver & binding

The igb table maps this identifier to the shared board_82575 implementation. The source separately handles I350 RSS/SR-IOV interaction; a driver-family name does not reveal enabled virtualization features.

  • igb — kernel driver/module candidate

Detected, bound, operational: learn the difference

Firmware

No host payload established here

No host-loaded firmware filename was established for this profile in the reviewed driver sources. EEPROM/NVM on the adapter is separate from files installed in the operating system.

Inspect firmware packaging on your distribution

Read-only diagnostics

Run one displayed command at a time. Replace uppercase placeholders with the affected device, interface or module from your own output. Commands are never executed here. Read-only output can still contain private identifiers.

Check the PCI function and bound driver

lspci -nnk -s BDF

Replace BDF with the domain:bus:device.function address. Look for [8086:1521] and Kernel driver in use. igb in Kernel modules is only a candidate, not proof of binding.

Identify the network interface driver

ethtool -i INTERFACE

Replace INTERFACE with the real interface name. Driver and bus-info connect this interface to its device. A displayed firmware-version is adapter information; it does not prove a file was loaded. Candidate: igb.

Compare supported modes with the current link

ethtool INTERFACE

Supported/advertised link modes describe capability or negotiation offers. Speed, Duplex and Link detected describe the current link, not measured throughput. An unsupported query is a limitation of the interface/driver.

Separate PCIe transport from Ethernet speed

sudo lspci -vv -s BDF

Elevated access may be needed. Root can expose the full PCI configuration. If PCIe capabilities exist, compare LnkCap with LnkSta: maximum and negotiated PCIe speed/width are different from Ethernet speed. Legacy PCI or virtual functions may omit these fields.

Limitations & related issues

Inspect each port and its interface independently. A virtual function can inherit link information from its physical function, and physical-card features do not automatically apply to a guest.

These guides are linked for relevant observations, not as known defects of every device in this family.

Choose a hardware diagnostic workflow · Inspect a log excerpt in Fix Lab

References

Source review records a checked implementation or document, not a reproduced hardware test. Version-specific tables do not establish a minimum kernel or guaranteed operation.