Switch User Manual

Chapter 5
Advanced Configuration
41
8-Port 10/100 Ethernet Switch with Webview
Aggregate Policer Settings The Aggregate Policer
button opens the New Aggregate Policer screen.
New Aggregate Policer
Advanced Mode > New Aggregate Policer
Aggregate Policer Name Enter a name in this field.
Ingress Committed Information Rate (CIR) Defines the
CIR in bits per second. This field is only relevant when the
Police value is Single.
Ingress Committed Burst Size (CBS) Defines the CBS
in bytes per second. This field is only relevant when the
Police value is Single.
Exceed Action Action assigned to incoming packets
exceeding the CIR. This field is only relevant when the
Police value is Single. Possible values are:
Drop • Drops packets exceeding the defined CIR value.
Remark DSCP • Remarks packet’s DSCP values
exceeding the defined CIR value.
None • Forwards packets exceeding the defined CIR
value.
Spanning Tree
Spanning Tree Protocol (STP) provides tree topography for
any arrangement of bridges. STP also provides one path
between end stations on a network, eliminating loops.
Loops occur when alternate routes exist between hosts.
Loops in an extended network can cause bridges to
forward traffic indefinitely, resulting in increased traffic
and reducing network efficiency.
The device supports the following Spanning Tree
versions:
Classic STP • Provides a single path between end
stations, avoiding and eliminating loops.
Rapid STP • Detects and uses network topologies
that provide faster convergence of the spanning tree,
without creating forwarding loops.
Multiple STP • Provides full connectivity for packets
allocated to any VLAN. Multiple STP is based on the
RSTP. In addition, Multiple STP transmits packets
assigned to different VLANs through different MST
regions. MST regions act as a single bridge.
Spanning Tree > STP Status
Spanning Tree > STP Status
The STP Status screen describes the STP status on the
device.
Spanning Tree State Indicates if STP is enabled on the
device.
Spanning Tree Mode Indicates the STP mode by which
STP is enabled on the device.
Bridge ID Identifies the Bridge priority and MAC
address.
Designated Root Indicates the ID of the bridge with the
lowest path cost to the instance ID.
Root Port Indicates the port number that offers the
lowest cost path from this bridge to the Root Bridge. It is
significant when the Bridge is not the Root. The default is
zero.
Root Path Cost The cost of the path from this bridge to
the root.
Root Maximum Age (sec) Indicates the device
Maximum Age Time. The Maximum Age Time indicates
the amount of time in seconds a bridge waits before
sending configuration messages. The default max age is
20 seconds. The range is 6 to 40 seconds.
Root Hello Time (sec) Indicates the device Hello Time.
The Hello Time indicates the amount of time in seconds
a root bridge waits between configuration messages. The
default is 2 seconds. The range is 1 to 10 seconds.