Compatible-systems 5.4 Manuel d'utilisateur télécharger pdf (Page 286)

280 Appendices

Chart 4: Broadcast Address Examples

The first three entries are traditional Class A, B and C network addresses and

use traditional masks. The last two are less traditional, “real world” examples.

Note in line 4 the change in the third octet between network address and

broadcast address. Line 5 shows what happens when a Class C network has

been subnetted.

Assigning an IP address

Use the network portion you were given by your administrator or ISP. Assign

the router interface a unique (i.e. unused) host portion. For example, if your

ISP tells you your network portion is 198.41.9, you could assign an interface

to 198.41.9.1. If you have a router with more than one interface, the network

(+ subnet) portions of each port’s IP address must be different.

Assigning a Subnet Mask

If you are using traditional Class A, B or C networks, CompatiView will auto-

matically calculate the value for you. If you wish to compute it yourself, use

the values in Chart 2.

If you are subnetting, use Chart 3 as a guide for Class C, or follow the same

scheme for Class A or B. Note that the IP address for a subnetted interface

(including the router interface on that subnet) must be in the correct subnet

range, as shown in Chart 3.

Assigning a Broadcast Address

CompatiView will automatically compute the broadcast address for you. If

you wish to compute it yourself, use the examples in Chart 4 above as a guide.

You can then use CompatiView to check your results.

LASS NETWORK SUBNET MASK BROADCAST

A 45.0.0.0 255.0.0.0 45.255.255.255

B 128.138.0.0 255.255.0.0 128.138.255.255

C 198.41.9.0 255.255.255.0 198.41.9.255

A* 45.21.16.0 255.255.252.0 45.21.19.255

C* 198.41.9.64 255.255.255.224 198.41.9.95

1 2 ... 281 282 283 284 285 286 287 288 289 290 291 ... 312 313

Pas de commentaire

Compatible-systems 5.4 Manuel d'utilisateur Page 286