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Cisco ISA500 Series Integrated Security Appliances Administration Guide 96
3
STP Status
Use the STP Status page to view information about VLANs that have Spanning
Tree Protocol (STP) enabled. STP is a Link Layer network protocol that ensures a
loop-free topology for any bridged LAN. No information is displayed for VLANs
without STP enabled.
At the top of the page, use the Check the STP status in this VLAN list to choose a
VLAN.
STP Status > Global Status
Interface Status Table
Field Description
Bridge ID An unique ID for the other devices on the network to
identify this device.
Root Bridge ID The bridge ID of the root bridge.
Root Port The Port ID of the root port. The root port is the port
with the lowest path cost to the root bridge. The root
bridge does not have a root port.
Root Path Cost The cost of the shortest path from the security
appliance to the root bridge. The value 0 indicates that
this security appliance is the root bridge.
Field Description
Interface The interface name.