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Win2k Q&A: 11 13 2000
The Windows 2000 RRAS Router and Network EquipmentQ: I am curious about how the Windows 2000 RRAS Router sees the network equipment. How does the Windows 2000 Router assess the network and the types of connections made to local and remote devices?
Q: I am curious about how the Windows 2000 RRAS Router sees the network equipment. How does the Windows 2000 Router assess the network and the types of connections made to local and remote devices?
A: Windows 2000 see the network equipment as a series of interface, devices, and ports. An interface can be a LAN interface (typically a network interface card, or NIC); a demand-dial interface, which is a logical interface representing a point-to-point connection; or an IP-in-IP tunnel interface that forwards IP multicast traffic from one area of the intranet to another area of the intranet across a part of the intranet that does not support multicast forwarding or routing.
Devices are defined as both physical devices such as modems and ISDN terminal adapters, and virtual devices such as an established VPN, PPTP and L2TP are seen as devices by RRAS. Devices can be multiport or single port.
A port is a channel located on a device that represents one point-to-point connection. A modem is a single-port device, so that port and the device will be seen as one entity. With multiport devices, like a modem bank or a two-channel ISDN terminal adapter, each point-to-point connection occurs over a separate port.