Compatible-systems 5.4 Manuel d'utilisateur télécharger pdf (Page 291)

Appendices 285

AppleTalk Routing Example

Each AppleTalk physical network segment is assigned a network

number/range by the routers on the segment. The network number (or range

of numbers) can be between 1 and 65,279. In the diagram above, 100-200 is

the network range for the backbone, and 1001 is the network number for the

local net segment.

Non-extended and Extended AppleTalk Networks

The original AppleTalk specification, which is now referred to as AppleTalk

Phase 1, used only a network number, not a network range. A network

number was a sixteen bit value, which allowed numbers between 1 and

65,534 to be used. The address of an individual device on the segment

consisted of the network number, along with an 8 bit node address value. This

scheme meant there could be a maximum of 254 devices per network

segment. While this was more than adequate for LocalTalk networks, it was

a major constraint on Ethernet networks.

AppleTalk Phase 2 introduced the concept of extended networks. While the

node address remained an 8 bit number, network segments could now be

identified by a range of network numbers between 1 and 65,279. Each

number in the range allows 253 node addresses. These Phase 2 extended

ranges should be used for all new AppleTalk installations.

“Seeding” a Network Segment

Establishing the network number/range for an AppleTalk network segment is

referred to as “seeding” the network. You should generally only have one

Backbone

ocal Net

outer

Workstation

Net: 100-200

Net: 1001

1 2 ... 286 287 288 289 290 291 292 293 294 295 296 ... 312 313

Pas de commentaire

Compatible-systems 5.4 Manuel d'utilisateur Page 291