Brocade BigIron RX Series Configuration Guide - Manual (Page 413)

BigIron RX Series Configuration Guide 335
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IEEE 802.1D Spanning Tree Protocol (STP)
12
TABLE 77 CLI display of STP information
This field... Displays...
Global STP parameters
VLAN ID The port-based VLAN that contains this spanning tree and the number of
STP instance on the VLAN. VLAN 1 is the default VLAN. If you have not
configured port-based VLANs on this device, all STP information is for
VLAN 1.
Bridge parameters
Bridge Identifier The ID assigned by STP to this bridge for this spanning tree in
hexadecimal.
NOTE: If this address is the same as the Root ID, then this device or
VLAN is the root bridge for its spanning tree.
Bridge MaxAge sec The number of seconds this bridge waits for a hello message from the
root bridge before deciding the root has become unavailable and
performing a reconvergence.
Bridge Hello sec The interval between each configuration BPDU sent by the bridge.
Bridge FwdDly sec The number of seconds this bridge waits following a topology change
and consequent reconvergence.
Hold Time sec The minimum number of seconds that must elapse between
transmissions of consecutive Configuration BPDUs on a port.
Last Topology Chang sec The number of seconds since the last time a topology change occurred.
Topology Change cnt The number of times the topology has changed since this device was
reloaded.
Root bridge parameters
Root Identifier The ID assigned by STP to the root bridge for this spanning tree in
hexadecimal.
Root Cost The cumulative cost from this bridge to the root bridge. If this device is
the root bridge, then the root cost is 0.
DesignatedBridge Identifier The designated bridge to which the root port is connected. The
designated bridge is the device that connects the network segment on
the port to the root bridge.
Root Port The port on this device that connects to the root bridge. If this device is
the root bridge, then the value is “Root” instead of a port number.
Max Age sec The number of seconds this root bridge waits for a hello message from
the bridges before deciding a bridges has become unavailable and
performing a reconvergence.
Hello sec The interval between each configuration BPDU sent by the root bridge.
FwdDly sec The number of seconds this root bridge waits following a topology
change and consequent reconvergence.
Port STP parameters
Port Num The port number.
Priority NOTE: If you configure this value, specify it in decimal format. Refer to
“Changing STP port parameters” on page 330.
Path Cost The port’s STP path cost.