---
name: "be"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/be/4"
---

# be(4)

SPARC64 10/100 Ethernet device

## NAME

**be** – SPARC64 10/100 Ethernet device

## SYNOPSIS

**qec\* at sbus?** **be\* at qec?**

## DESCRIPTION

The **be** interface provides access to the 10Mb/s and 100Mb/s (half duplex only) Ethernet networks. The **be** is found on the Sun 10/100 Mbit Ethernet boards (Sun part number SUNW,501-2655).

The **be** is not capable of link autonegotiation, so a media type must be specified with [ifconfig(8)](/ifconfig/8.md). The supported media types are:

- **media** 100baseTX **mediaopt** half-duplex

  Use 100Mbps, half duplex

- **media** 10baseT **mediaopt** half-duplex

  Use 10Mbps, half duplex

## SEE ALSO

[arp(4)](/arp/4.md), [ifmedia(4)](/ifmedia/4.md), [inet(4)](/inet/4.md), [intro(4)](/intro/4.md), [netintro(4)](/netintro/4.md), [qec(4)](/qec/4.md), [sbus(4)](/sbus/4.md), [hostname.if(5)](/hostname.if/5.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **be** driver first appeared in OpenBSD 3.0.