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- Duplex support
- v1.09
-
- EtherExpress(TM) PRO/100B - TX and T4 Adapters
- ===============================================================
-
- Duplexing is a performance option that lets you choose how the
- adapter sends and receives packets over the network.
-
- PRO/100B TX adapter duplex choices:
- -----------------------------------
-
- Auto (TX adapter only). The TX adapter negotiates with the
- full duplex switching hub to send and receive packets at the
- highest rate. The hub must support auto-negotiation. If the
- hub does not support auto-negotiation, the adapter defaults to
- half duplex.
-
- Full duplex (requires full-duplex switching hub). The adapter
- sends and receives packets simultaneously by using a different
- wire to perform each function. This feature can improve
- adapter performance by eliminating collisions. Note that the
- PRO/100 T4 adapter supports full duplex at 10 Mbps only.
-
- Half duplex. The adapter performs one operation at a time
- (because send and receive lines are shared); it either sends
- or receives.
-
- PRO/100B T4 adapter duplex choices:
- -----------------------------------
-
- Full duplex (requires 10 Mpbs 10BASE-T full-duplex switching
- hub). The T4 adapter sends and receives packets simultaneously
- by using a different wire to perform each function. This
- feature can improve adapter performance by eliminating
- collisions. Note that the PRO/100 T4 adapter supports full
- duplex at 10 Mbps only, and requires a 10BASE-T switching hub.
-
- Half duplex. The adapter performs one operation at a time
- (because send and receive lines are shared); it either sends
- or receives.
-
- Warning: Incorrectly forcing a specific duplex mode may result
- in poor performance. Consult your LAN administrator before
- forcing a duplex mode or if you don't know what kind of hub
- you're attached to.
-
- Full duplex mode is available using the following configurations:
-
- - EtherExpress PRO/100B TX adapter (10 or 100 Mbps w/ 100BASE-TX
- hub)
-
- - EtherExpress PRO/100B T4 adapter (10 Mbps only w/ 10BASE-T hub)
-
-
- Configuring for full-duplex
- ===========================
-
- PRO/100B TX adapter: if you have an auto-negotiating hub (an
- NWay* hub), the Intel PRO/100B PCI TX adapter will automatically
- match the duplex setting at the hub. If you don't have an auto-
- negotiating hub, you'll need to manually configure the adapter
- for full duplex support.
-
- PRO/100B T4 adapter: the T4 adapter does not support auto-
- negotiation.
-
- PRO/100B TX and T4: configuration is specific to the driver
- you're loading for your network operating system (NOS). See the
- sections for your NOS below.
-
- Note: If you're using the EtherExpress PRO/100B TX or T4 adapter,
- you must set the Speed when configuring for full-duplex
- support. Don't leave the Speed set to Auto.
-
- To set up the duplex mode, refer to the section below that
- corresponds to your operating system. For example, if you are
- running Windows NT on a Novell network, choose the Windows NT
- method below.
-
- Note that performance may suffer if your hub is not full duplex
- and you configure the adapter to full duplex. Leave the adapter
- on half duplex if you are not sure what type of hub you are
- connected to.
-
-
- DOS/ODI clients
- ---------------
-
- Edit the NET.CFG file. Add the SPEED and FORCEDUPLEX parameters
- under the link driver section. For example
-
- Link Driver E100BODI
- SPEED 100 (or 10 for 10 Mbps operation)
- FORCEDUPLEX 2
-
-
- Windows* NT
- ------------
-
- Use the PRO Adapter setup program:
-
- 1 Double-click the PROSet icon in the Control Panel.
-
- 2 Click Change.
-
- 3 Set Speed on PRO/100 TX to 10 or 100. On PRO/100 T4 adapter,
- set to 10.
-
- 4 Set Duplex Mode to Full.
-
- 5 Click OK until prompted to restart. Restart Windows NT.
-
-
-
-
- Windows 95
- ----------
-
- Use the PRO Adapter setup program:
-
- 1 Double-click the PROSet icon in the Control Panel.
-
- 2 Click Change.
-
- 3 Set Speed on PRO/100 TX to 10 or 100. On PRO/100 T4 adapter,
- set to 10.
-
- 4 Set Duplex Mode to Full.
-
- 5 Click OK until prompted to restart. Restart Windows 95.
-
-
-
-
- Other NDIS 2.x based clients
- ----------------------------
-
- Edit the PROTOCOL.INI file. Add the FORCEDUPLEX and SPEED
- parameters to the E100B section. For example:
-
- [E100B_NIF] ; varies depending on your NOS
- SPEED = 100 ; or 10 for 10 Mbps operation
- FORCEDUPLEX = 2
-
-
-
- * Third-party trademarks are the property of their respective
- owners.
-
-
-