User Guide

OmniAccess SafeGuard OS Administration Guide
153
Chapter 5: Setting Up SafeGuard Switches
The fields in the output represent:
Configuring Spanning Trees
The SafeGuard Switch supports the Spanning-Tree Protocol (STP) on all Ethernet, Fast
Ethernet, Gigabit Ethernet, and port-based VLANs. STP eliminates undesirable Layer 2
loops in networks, by selectively blocking some ports and allowing other ports to
forward traffic, based on configurable bridge and port parameters.
STP ensures that the most efficient path is taken when multiple paths exist between ports
or VLANs. If the selected path fails, STP searches for and then establishes an alternate
path to prevent or limit retransmission of data. STP is transparent to end stations, which
cannot detect whether they are connected to a single LAN segment or a switched LAN of
multiple segments.
By default, a single instance of STP runs on each configured VLAN (assuming that STP is
not disabled). STP can be enabled on a global basis. STP is disabled by default. When STP
is enabled on a switch, STP is still disabled on each port.
Field Description
VLAN ID Identifier for the VLAN.
MAC Address A unicast MAC address for which the device has forwarding
and or filtering information. MAC addresses may be specified
in any of the following formats:
■ aa:bb:cc:dd:ee:ff
■ aabb:ccdd:eeff
■ aa-bb-cc-dd-ee-ff
■ aabb.ccdd.eeff
■ aabbccddeeff
Interface Slot and port which this address was learned.
If Index IfIndex of the interface table entry associated with this port.
Status Status of this entry, which can be:
■ Learned – Value of the corresponding instance was
learned by observing the source MAC addresses of
incoming traffic and is currently in use.
■ Management – Value of the corresponding instance
(system MAC address) is also the value of an existing
instance of dot1dStaticAddress. It is identified with
interface 0/1 and is currently used when enabling VLANs
for routing.