User manual D-LINK DES-3028P

[. . . ] User Manual Product Model : DES-3028/DES-3028P/DES-3028G/DES3052/DES-3052P Managed 10/100Mbps Fast Ethernet Switch Release 2 ©Copyright 2009. All rights reserved. ________________________________________________________________________________________________________ Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden. Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Computer Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation. [. . . ] It is advisable to define an STP Group to correspond to a VLAN group of ports. The following fields can be set: Parameter From/To State Cost (0 = Auto) Description A consecutive group of ports may be configured starting with the selected port. Toggle from Disabled to Enabled to implement BPDU packet forwarding. External Cost - This defines a metric that indicates the relative cost of forwarding packets to the specified port list. Port cost can be set automatically or as a metric value. The default value is 0 (auto). 0 (auto) - Setting 0 for the external cost will automatically set the speed for forwarding packets to the specified port(s) in the list for optimal efficiency. Default port cost: 100Mbps port = 200000. value 1-200000000 - Define a value between 1 and 200000000 to determine the external cost. The lower the number, the greater the probability the port 123 DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch will be chosen to forward packets. Hello Time This can be set from 1 to 2 seconds. This is the interval between two transmissions of BPDU packets sent by the Root Bridge to tell all other switches that it is indeed the Root Bridge. Setting this parameter as "yes" will set the ports to send out BPDU packets to other bridges, requesting information on their STP setting If the Switch is configured for RSTP, the port will be capable to migrate from 802. 1d STP to 802. 1w RSTP. If the Switch is configured for MSTP, the port is capable of migrating from 802. 1d STP to 802. 1s MSTP. RSTP and MSTP can coexist with standard STP, however the benefits of RSTP and MSTP are not realized on a port where an 802. 1d network connects to an 802. 1w or 802. 1s enabled network. Migration should be set as yes on ports connected to network stations or segments that are capable of being upgraded to 802. 1w RSTP or 802. 1s MSTP on all or some portion of the segment. Choosing the True parameter designates the port as an edge port. Edge ports cannot create loops, however an edge port can lose edge port status if a topology change creates a potential for a loop. An edge port normally should not receive BPDU packets. If a BPDU packet is received, it automatically loses edge port status. Choosing the False parameter indicates that the port does not have edge port status. Choosing the Auto parameter will indicate that the port will be able to automatically enable edge port status if needed. Choosing the True parameter indicates a point-to-point (P2P) shared link. [. . . ] Trademarks Copyright . 2002 D-Link Corporation. Contents subject to change without prior notice. D-Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc. All other trademarks belong to their respective proprietors. [. . . ]