Technical data

BLADEOS 6.3 Command Reference
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 Chapter 2: Information Commands BMD00186-B, April 2010
The switch software uses the IEEE 802.1D Spanning Tree Protocol (STP). If IEEE 802.1w Rapid
Spanning Tree Protocol (RSTP), the IEEE 802.1s Multiple Spanning Tree Protocol (MSTP), or Per
VLAN Rapid Spanning Tree Protocol (PVRST) are turned on, see “RSTP/MSTP/PVRST
Information” on page 66.
When STP is used, in addition to seeing if STG is enabled or disabled, you can view the following
STG bridge information:
Table 25 Spanning Tree Bridge Parameter Descriptions
Parameter Description
Current Root The Current Root shows information about the root bridge for the
Spanning Tree. Information includes the priority (in hexadecimal
notation) and the MAC address of the root.
Priority (bridge) The Bridge Priority parameter controls which bridge on the network will
become the STG root bridge.
Hello The Hello Time parameter specifies, in seconds, how often the root bridge
transmits a configuration bridge protocol data unit (BPDU). Any bridge
that is not the root bridge uses the root bridge hello value.
MaxAge The Maximum Age parameter specifies, in seconds, the maximum time
the bridge waits without receiving a configuration bridge protocol data
unit before it reconfigure the STG network.
FwdDel The Forward Delay parameter specifies, in seconds, the amount of time
that a bridge port has to wait before it changes from listening to learning
and from learning state to forwarding state.
Aging The Aging Time parameter specifies, in seconds, the amount of time the
bridge waits without receiving a packet from a station before removing
the station from the Forwarding Database.