# 09-vlsmx - Óbudai Egyetem

Networking and Communications

Oct 24, 2013 (4 years and 8 months ago)

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Címszámítás

Számítógép hálózatok gyakorlata

ÓBUDAI EGYETEM

2011 TAVASZI FÉLÉV

9. LABORGYAKORLAT

PRÉM DÁNIEL

Variable

Length

Subnet

Calculating with variable length

More
precise

as

the

constant

length

subnet

wastes

less IP

RIPv1
does

not

support

VLSM, RIPv2 is
required

Variable

Length

Subnet

Iterate

subnetting

pl.: /24

254
machines

2 /25

2 x 126
machines

2

/
26

2 x
62
machines

4
/
28

2 x
16
machines

IP

calculation

We have a
204.15.5.0/24
„C”
class

.
Demands
: 4
subnets

with
:
60, 25, 10
and

2
hosts
.

Constant

length

Variable

length

(VLSM)

204.15.5.0/26

255.255.255.192

.1

.62

.63

204.15.5.0/26

255.255.255.192

.1

.62

.63

204.15.5.64/26

255.255.255.192

.65

.126

.127

204.15.5.64/27

255.255.255.224

.65

.94

.95

204.15.5.128/26

255.255.255.192

.129

.190

.191

204.15.5.96/28

255.255.255.240

.97

.110

.111

204.15.5.192/26

255.255.255.192

.193

.254

.255

204.15.5.112/30

255.255.255.252

.113

.114

.115