3com NJ220 補足マニュアル
3 C O M
®
N J 2 0 5 I N T E L L I J A C K
™
S W I T C H — V L A N S & T R A F F I C P R I O R I T I Z AT I O N
3Com Corporation, Corporate Headquarters, 350 Campus Drive, Marlborough, MA 01752-3064
To learn more about 3Com solutions, visit www.3com.com. 3Com is publicly traded on NASDAQ under the symbol COMS.
Copyright © 2003 3Com Corporation. All rights reserved. 3Com and the 3Com logo are registered trademarks of 3Com
Corporation. IntelliJack and Possible made practical are trademarks of 3Com Corporation. All other company and prod-
uct names may be trademarks of their respective companies. While every effort is made to ensure the information given
is accurate, 3Com does not accept liability for any errors or mistakes which may arise. Specifications and other informa-
tion in this document may be subject to change without notice.
Corporation. IntelliJack and Possible made practical are trademarks of 3Com Corporation. All other company and prod-
uct names may be trademarks of their respective companies. While every effort is made to ensure the information given
is accurate, 3Com does not accept liability for any errors or mistakes which may arise. Specifications and other informa-
tion in this document may be subject to change without notice.
104101-001 09/03
• 3Com NJ205 IntelliJack Switch is compliant with SNMPv.1 and supports most SNMP
management platforms
• Multicast packets are handled the same as broadcast packets
• The autonegotiation setting on the LAN port (uplink port) cannot be changed
• NJ205 IntelliJack Switch does not support spanning tree protocol (STP)
• MAC table is capable of 512 addresses at any given time; timeout in 300 seconds/5
minutes of inactivity; these settings are permanent and cannot be changed
• Ethernet switching uses store-and-forward—receives complete frame in switch buffer,
checks CRC, looks up destination address in MAC filter table, and forwards frame
Appendix B: Additional Notes