2[1]ANSI/IEEE Standard 802.1D-1990, MAC Bridges, IEEE Project 802 Local and Metropolitan Area Networks [S] .(March 8, 1991).
3[3]E. Decker. Definitions of Managed Objects for Bridges [J] . RFC1493.July 1993.
4[4]Bruce Lowekamp, David R. O'Hallaron, Thomas R. Gross,Topology Discovery for Large Ethernet Networks [J] .SIGCOMM'01, August 27-31, 2001, San Diego, California, USA.
5[5]Y. Bejerano, Y. Breitbart, M. Garofalakis, and R. Rastogi, Physical Topology Discovery for Large Multi-Subnet Networks [J] , July 2002, Bell Labs Tech. Memorandum.
