VMG1312-B Series User’s Guide
351
A
P P E N D I X
E
IPv6
Overview
I Pv6 ( I nt ernet Prot ocol version 6) , is designed t o enhance I P address size and feat ures. The
increase in I Pv6 address size t o 128 bit s ( from t he 32- bit I Pv4 address) allows up t o 3.4 x 10
38
I P
addresses.
IPv6 Addressing
The 128- bit I Pv6 address is writ t en as eight 16- bit hexadecim al blocks separat ed by colons ( : ) . This
is an exam ple I Pv6 address
2001:0db8:1a2b:0015:0000:0000:1a2f:0000
.
I Pv6 addresses can be abbreviat ed in t wo ways:
• Leading zeros in a block can be om it t ed. So
2001:0db8:1a2b:0015:0000:0000:1a2f:0000
can
be writ t en as
2001:db8:1a2b:15:0:0:1a2f:0
.
• Any num ber of consecut ive blocks of zeros can be replaced by a double colon. A double colon can
only appear once in an I Pv6 address. So
2001:0db8:0000:0000:1a2f:0000:0000:0015
can be
writ t en as
2001:0db8::1a2f:0000:0000:0015
,
2001:0db8:0000:0000:1a2f::0015
,
2001:db8::1a2f:0:0:15
or
2001:db8:0:0:1a2f::15
.
Prefix and Prefix Length
Sim ilar t o an I Pv4 subnet m ask, I Pv6 uses an address prefix t o represent t he net work address. An
I Pv6 prefix lengt h specifies how m any m ost significant bit s ( st art from t he left ) in t he address
com pose t he net work address. The prefix lengt h is writ t en as “ / x” where x is a num ber. For
exam ple,
2001:db8:1a2b:15::1a2f:0/32
m eans t hat t he first 32 bit s (
2001:db8
) is t he subnet pr efix.
Link-local Address
A link- local address uniquely ident ifies a device on t he local net work ( t he LAN) . I t is sim ilar t o a
“ privat e I P address” in I Pv4. You can have t he sam e link- local address on m ult iple int erfaces on a
device. A link- local unicast address has a predefined prefix of fe80: : / 10. The link- local unicast
address form at is as follows.
Table 126
Link- local Unicast Address Form at
1111 1110 10
0
I nt er face I D
10 bit s
54 bit s
64 bit s
Summary of Contents for VMG1312-B Series
Page 4: ...Contents Overview VMG1312 B Series User s Guide 4 Troubleshooting 289 ...
Page 14: ...Table of Contents VMG1312 B Series User s Guide 14 ...
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 30: ...Chapter 2 The Web Configurator VMG1312 B Series User s Guide 30 ...
Page 35: ...Chapter 4 Tutorials VMG1312 B Series User s Guide 35 7 Click Apply to save your settings ...
Page 77: ...77 PART II Technical Reference ...
Page 78: ...78 ...
Page 166: ...Chapter 9 Routing VMG1312 B Series User s Guide 166 ...
Page 184: ...Chapter 10 Quality of Service QoS VMG1312 B Series User s Guide 184 ...
Page 210: ...Chapter 13 Interface Group VMG1312 B Series User s Guide 210 ...
Page 226: ...Chapter 15 Firewall VMG1312 B Series User s Guide 226 ...
Page 232: ...Chapter 17 Parental Control VMG1312 B Series User s Guide 232 ...
Page 242: ...Chapter 19 Certificates VMG1312 B Series User s Guide 242 ...
Page 246: ...Chapter 20 Log VMG1312 B Series User s Guide 246 ...
Page 250: ...Chapter 21 Traffic Status VMG1312 B Series User s Guide 250 ...
Page 256: ...Chapter 24 IGMP Status VMG1312 B Series User s Guide 256 ...
Page 260: ...Chapter 25 xDSL Statistics VMG1312 B Series User s Guide 260 ...
Page 262: ...Chapter 26 User Account VMG1312 B Series User s Guide 262 ...
Page 268: ...Chapter 29 TR 064 VMG1312 B Series User s Guide 268 ...
Page 272: ...Chapter 30 Time Settings VMG1312 B Series User s Guide 272 ...
Page 278: ...Chapter 32 Logs Setting VMG1312 B Series User s Guide 278 ...
Page 296: ...Chapter 36 Troubleshooting VMG1312 B Series User s Guide 296 ...
Page 336: ...Appendix C Pop up Windows JavaScripts and Java Permissions VMG1312 B Series User s Guide 336 ...
Page 350: ...Appendix D Wireless LANs VMG1312 B Series User s Guide 350 ...
Page 374: ...VMG1312 B Series User s Guide 374 Index ...