crossover cable from scratch

ROUTER PASSWORDS

How to Reset a Router Back to the Factory Default Settings

fixing loopy networks using low tech methods

data communications news groups

general discusssion about LANS

comp.dcom.lans
comp.dcom.lans.misc


ethernet, IEEE 802.3 , CSMA/CD standards

comp.dcom.lans.ethernet

discussion about wireless network including wireless LANS

comp.std.wireless

computer security & encryption

comp.security.misc

ATM & ATM Lans

comp.dcom.cell-relay

frame relay network

comp.dcom.fram-relay


discusssion about n/w management application, protocols and standards

comp.protocols.tcp-ip

internet-connections

Fiber Distributed Data Interface (FDDI)

The Fiber Distributed Data Interface (FDDI) topology is sometimes referred to as a fast, redundant Token Ring network. FDDI is similar to a Token Ring network in the sense that it uses token passing as the access method, but there are two rings instead of the one found in Token Ring. FDDI uses fiber-optic cable operating at 100 Mbps

Two rings are used in the FDDI architecture—the primary ring and the secondary ring. The primary ring is used at all times, and the secondary ring is used only if the primary ring fails. The token is passed on each ring in opposite directions.

FDDI is specifically for WAN use, not for LAN use. FDDI is used to connect multiple sites. Even if the individual LANs are using non–Token Ring topologies, they can still be connected by FDDI