User guide

B
LACK
D
IAMOND
U
SER
G
UIDE
1-5
S
UMMARY OF
F
EATURES
• It eases the change and movement of devices on networks. If a device in VLAN
marketing is moved to a port in another part of the network, all you must do is
specify that the new port belongs to VLAN marketing.
For more information on VLANs, refer to Chapter 4.
S
PANNING
T
REE
P
ROTOCOL
(
STP
)
The BlackDiamond supports the IEEE 802.1D Spanning Tree Protocol (STP), which is a
bridge-based mechanism for providing fault tolerance on networks. STP enables you to
implement parallel paths for network traffic, and ensure the following:
• Redundant paths are disabled when the main paths are operational.
• Redundant paths are enabled if the main traffic paths fail.
The BlackDiamond supports up to 64 Spanning Tree Domains (STPDs).
For more information on STP, refer to Chapter 6.
Q
UALITY OF
S
ERVICE
(Q
O
S)
The BlackDiamond has Policy-Based Quality of Service (QoS) features that enable you
to specify service levels for different traffic groups. By default, all traffic is assigned the
“normal” QoS policy profile. If needed, you can create other QoS policies and apply
them to different traffic types so that they have different guaranteed minimum
bandwidth, maximum bandwidth, and priority.
For more information on Quality of Service, refer to Chapter 7.