?– Determining the optimal number of subnets and hosts depends on the type of network
and the number of host addresses required.
?– The algorithm for computing a number of subnets is 2s, where s is the number of subnet
bits.
?– The subnet mask is the tool that the router uses to determine which bits are routing
(network and subnet) bits and which bits are host bits.
?– End systems use subnet masks to compare the network portion of the local network
addresses with the destination addresses of the packets to be sent.
?– Routers use subnet masks to determine whether the network portion of an IP address
is on the corresponding routing table or whether the packet needs to be sent to the next
router.
?– Determining the subnetwork and host addresses using a subnet mask is accomplished
through this procedure:
??” Write the octet being split in binary.
Table 4-5 Subnet Addresses Table
Subnet No. Subnet ID Host Range Broadcast
All 0s 10.0.0.0 10.0.0.1 to 10.0.63.254 10.0.63.255
1 10.0.64.0 10.0.64.1 to 10.0.127.254 10.0.127.255
2 10.0.128.0 10.0.128.1 to 10.0.191.254 10.0.191.255
1021 10.255.64.0 10.255.64.1 to 10.255.127.254 10.255.127.255
1022 10.255.128.0 10.255.128.1 to 10.255.191.254 10.255.
Pages:
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387