3Com IntelliJack NJ200 보충 설명서 - 페이지 14

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3 C O M

N J 2 0 0 N E T W O R K J A C K — 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

Appendix B: Additional Notes

• 3Com NJ200 Network Jack 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

• NJ200 Network Jack 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

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.

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.

NJ_VirtualLANs 09/03