 - Modem doubling is an inexpensive way for a user who wants a fast Internet connection, but can only connect with an analog
telephone line, to use two 56kbps modems to double their bandwidth. modem
doubling makes it possible for the user to use one of two methods, modem bonding or modem teaming, to achieve a connection speed close to 112kbps.
Modem bonding, which is supported by over ninety percent of Internet Service Providers (ISPs), takes advantage of
Multilink Protocol Plus (MP+). Data packets are "inverse-multiplexed" through the two modems, meaning that each of the
modems receive half of the data packets as they are sent over the Internet and then they are recombined. An advantage of
modem bonding is that if either of the modems gets disconnected for some reason, the other modem will take over so that the
connection isn't lost.
Modem teaming, a good alternative for users whose IPS does not support MP+, allows the modems to work as separate
connections by taking advantage of the "smart download" capability that most HTTP and FTP servers use in case a download
is interrupted. Modem teaming requires a software application to instruct one modem to download the first part of the file while
the other modem downloads the second part. A disadvantage of modem teaming is that it is not flexible if one modem should
disconnect, nor is it useful when downloading streaming multimedia or conducting continuous sessions such as Telnet or
PCAnywhere.
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Learn more about Working With Servers and Desktops |
| Troubleshooting -- 'Network Know-How' Chapter 17: Troubleshooting, Chapter 17 of 'Network Know-How,' shows tools and methods that identify and solve network problems. Use this chapter as a tutorial to fixing computer connections. |
| Network navigation -- Chapter 6 of 'Microsoft Windows Vista Administration': Microsoft introduced a new way to view and navigate a network with Windows Vista. This chapter examines new network navigation tools and managing network connections with Vista. |
| Network administration guide: Network administration responsibilities, such as network design, troubleshooting, backup, documentation, security, and managing users are discussed in this guide. |
| Network administration: Help for designing, managing and troubleshooting your network: Helpful tips for network administration design, management and troubleshooting are presented in this guide. |
| Top five administrator tips of '05: This collection of our top five administrator tips focus on strategies for maximizing network uptime and efficiency while minimizing security risks and vulnerability. |
| LAST UPDATED: |
13 Feb 2001
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