Comtrol ES7510-XT - Manual (Page 79)

RocketLinx ES7510-XT User Guide: 2000571 Rev. D STP Configuration - 79
Configuration Using the Web Interface
STP Configuration
This page allows you to select the STP mode and configure the global
STP/RSTP bridge configuration. Spanning Tree Protocol (STP; IEEE
802.1D) provides a loop-free topology for any LAN or bridged network.
Rapid Spanning Tree Protocol (RSTP; IEEE 802.1w) is an evolution of
the Spanning Tree Protocol (STP), and was introduced with the IEEE
802.1w standard, and provides faster spanning tree convergence after a
topology change. In most cases, IEEE 802.1w can also revert back to
IEEE 802.1D in order to interoperate with legacy bridges on a per-port
basis. The new edition of the IEEE 802.1D standard, IEEE 802.1D-2004,
incorporates the IEEE 802.1t-2001 and IEEE 802.1w standards.
Multiple Spanning Tree Protocol (MSTP; IEEE 802.1s) which uses
RSTP for rapid convergence, enables VLANs to be grouped into a
spanning-tree instance, with each instance having a spanning-tree
topology independent of other spanning-tree instances. This
architecture provides a loop-free topology with load balancing while
reducing the number of spanning-tree instances required to support a large number of VLANs. MSTP was
originally defined in the IEEE 802.1s and later merged into the IEEE 802.1Q-2003 specification.
STP Configuration Page
STP Mode Select STP running protocol STP, RSTP or MSTP or disable STP.
Bridge Configuration
Bridge Address A value used to identify the bridge. This item cannot be modified.
Bridge Priority
A value used to identify the bridge. The bridge with the lowest value has the
highest priority and is selected as the root. Enter a number 0 through 61440 in
increments of 4096.
Max Age
The number of seconds a bridge waits without receiving Spanning-Tree Protocol
configuration messages before attempting to reconfigure. Enter a number of 6
through 40.
Note: 2*(Forward Delay Time-1) should be greater than or equal to the Max Age.
The Max Age should be greater than or equal to 2*(Hello Time + 1).
Hello Time
The number of seconds between the transmissions of Spanning-Tree Protocol
configuration messages. Enter a number of 1 through 10.
Note: 2*(Forward Delay Time-1) should be greater than or equal to the Max Age.
The Max Age should be greater than or equal to 2*(Hello Time + 1).
Forward Delay
The number of seconds a port waits before changing from its Spanning-Tree
Protocol learning and listening states to the forwarding state. Enter a number 4
through 30.
Note: 2*(Forward Delay Time-1) should be greater than or equal to the Max Age.
The Max Age should be greater than or equal to 2*(Hello Time + 1).
Apply
Click Apply to apply the settings.
Note: You must Save the settings ( Page 130 ), if you want to maintain these
settings if the ES7510-XT is powered off.