3com 3C990B-TX-M Manual De Usuario
3C990BSVR Server NIC Features
11
■
It helps to control traffic.
With traditional networks, congestion can be caused by broadcast traffic that is
directed to all network devices whether they require it or not. Each VLAN can be set
up to contain only those devices that need to communicate with each other,
increasing network efficiency.
directed to all network devices whether they require it or not. Each VLAN can be set
up to contain only those devices that need to communicate with each other,
increasing network efficiency.
■
It provides extra security.
Devices within each VLAN can communicate only with member devices in the same
VLAN. If a device in VLAN 1 needs to communicate with devices in VLAN 2, the traffic
must cross a router.
VLAN. If a device in VLAN 1 needs to communicate with devices in VLAN 2, the traffic
must cross a router.
The 3C990B NIC multiple VLAN capability supports IEEE 802.1Q VLAN tagging and works
with any switch that complies with IEEE 802.1Q specifications. Refer to your Ethernet
switch documentation for more information on IEEE 802.1Q VLANs.
with any switch that complies with IEEE 802.1Q specifications. Refer to your Ethernet
switch documentation for more information on IEEE 802.1Q VLANs.
Traffic Prioritization
Traffic prioritization (IEEE 802.1p/Q) ensures that business-critical and delay-sensitive
traffic (such as multimedia applications) has priority over normal data.
Traffic prioritization (IEEE 802.1p/Q) ensures that business-critical and delay-sensitive
traffic (such as multimedia applications) has priority over normal data.
Server Features Using Other NICs
Up to two foreign NICs (those that are not 3Com server NICs) are allowed in one group
per server. For guidelines on using foreign NICs, see these topics:
per server. For guidelines on using foreign NICs, see these topics:
■
Windows NT and Windows 2000 — “Planning the Configuration” on page 45
■