Comtrol ES7510 - Manual (Page 69)

RocketLinx ES7510 User Guide: 2000544 Rev. B STP Configuration - 69
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 122 ), if you want to maintain these
settings if the ES7510 is powered off.