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Subnetting With Class A and Class B Networks.

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P-871H Series User's Guide Subnetting With Class A and Class B Networks. For class "A" and class "B" addresses the subnet mask also determines which bits are part of the network number and which are part of the host ID. A class "B" address has two host ID octets available for subnetting and a class "A" address has three host ID octets (see Table 23 on page 87) available for subnetting. The following table is a summary for class "B" subnet planning. Table 36 Class B Subnet Planning NO. "BORROWED" HOST BITS SUBNET MASK 1 255.255.128.0 (/17) 2 255.255.192.0 (/18) 3 255.255.224.0 (/19) 4 255.255.240.0 (/20) 5 255.255.248.0 (/21) 6 255.255.252.0 (/22) 7 255.255.254.0 (/23) 8 255.255.255.0 (/24) 9 255.255.255.128 (/25) 10 255.255.255.192 (/26) 11 255.255.255.224 (/27) 12 255.255.255.240 (/28) 13 255.255.255.248 (/29) 14 255.255.255.252 (/30) 15 255.255.255.254 (/31) NO. SUBNETS 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768 NO. HOSTS PER SUBNET 32766 16382 8190 4094 2046 1022 510 254 126 62 30 14 6 2 1 IP Subnetting 93

Section	Page
P-871G Series User’s Guide	1
Copyright	2
Interference Statements and Warnings	3
Safety Warnings	4
ZyXEL Limited Warranty	5
Customer Support	6
Table of Contents	8
List of Figures	12
List of Tables	14
Preface	16
Getting to Know Your Prestige	18
1.1 Introduction	18
1.2 Software Features	18
1.3 Hardware Features	19
1.4 Internet Access Application	19
Hardware Overview	20
2.1 Hardware Connection	20
2.2 Front Panel LEDs	20
2.3 Rear Panel	21
2.3.1 VDSL Port	21
2.3.2 PHONE Port	21
2.3.3 LAN Ports	21
2.3.4 Console Port	21
2.3.5 POWER Port	22
The Web Configurator	24
3.1 Introduction	24
3.2 System Login	24
3.3 The Status Screen	25
3.3.1 Change Your Password	27
3.4 Prestige Lockout	27
3.5 Resetting the Prestige	28
3.5.1 Reload the Configuration File	28
3.6 Logging Out of the Web Configurator	29
3.7 Help	29
System Status and Port Statistics	30
4.1 Overview	30
Basic Setting	36
5.1 Overview	36
5.3 Introduction to VLANs	37
5.4 IGMP Snooping	38
VLAN	44
6.1 Introduction to IEEE 802.1Q Tagged VLAN	44
6.1.1 Forwarding Tagged and Untagged Frames	44
6.2 Select the VLAN Type	45
6.4.1 Configure a Port-based VLAN	50
Broadcast Storm Control	52
7.2 Broadcast Storm Control Setup	52
Maintenance	54
8.1.1 VDSL Chip Reset	54
8.1.2 Load Factory Defaults	54
8.1.3 Reboot System	55
8.2 Firmware and Configuration Management	55
8.2.1 Filename Conventions	56
8.2.1.1 Example FTP Commands	56
8.2.2 FTP Command Line Procedure	56
8.2.3 GUI-based FTP Clients	57
MAC Table	58
9.2 Viewing the MAC Table	59
Introduction to CLI	60
10.1 Overview	60
10.1.1 Accessing the Command Line Interface	60
10.2 The Login Screen	60
10.2.1 Command Conventions	61
10.2.2 Command Syntax Conventions	61
10.2.3 Getting Help	61
10.3 Command Summary	62
Command Examples	64
11.1 Overview	64
11.2 config save	64
11.3 ip igmpsnoop	64
11.4 sys password	64
11.5 sys sw bmstorm enable	65
11.6 sys sw mac list	65
11.7 Ethernet Port Setup	65
11.7.1 sys sw port enable	66
11.7.2 sys sw port speed	66
11.7.3 sys sw port status	66
11.7.4 sys sw qos defpri	67
11.7.5 sys sw vlan status	67
11.7.6 sys sw vlan type	67
11.7.7 sys sw vlan1q port status	68
11.7.8 sys sw vlan1q port defaultVID	68
11.7.9 sys sw vlan1q svlan list	69
11.7.10 sys sw vlan1q svlan setentry	69
11.7.11 sys sw vlan1q status	69
Setting up Your Computer’s IP Address	72
Verifying Settings	87
IP Subnetting	88
ASCII Characters	96
Index	98
Numerics	98
A	98
B	98
C	98
D	98
E	98
F	98
G	99
H	99
I	99
L	99
M	99
N	99
O	99
P	99
Q	100
R	100
S	100
T	100
U	100
V	100
W	101