IPv6 Address & Deployment Planning

1. IPv6 Address and
Deployment Planning
Md.
Abdul
Awal
awal@bdren.net.bd

2. Objec;ves
A0er
this
session,
you
should
be
able
to:
• Get
an
idea
about
IPv6
address
• Understand
the
value
of
an
IPv6
address
plan
• Plan
how
you
will
assign
IPv6
subnets
• EsBmate
the
IPv6
addressing
needs
of
your
network
• Subnet
an
IPv6
prefix
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
2

3. Why We Need an IPv6 Address Plan?
• RouBng
tables
can
be
smaller
and
more
efficient
• Security
policies
can
be
easier
to
implement
• ApplicaBon
policies
can
be
implemented
• Network
management/provisioning
can
be
easier
• TroubleshooBng
can
be
easier,
parBcularly
with
visual
idenBficaBon
• Easier
scaling
as
more
devices
or
locaBons
are
added
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
3

4. Philosophy Change
IPv4
• Conserve
(Limited
address
space)
• How
many
addresses
do
I
need?
IPv6
• Aggregate
(Huge
address
space)
• How
many
subnets
do
I
need?
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
4

5. IPv6 Address Distribu;on
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
5
IANA
RIR
LIR
Org.
/3
/12
/32
/48
/48
/60

6. Assignments to customers
• How
many
subnets
do
I
give
my
customers?
• /64
(1
subnet)
• /60
(16
subnets)
• /56
(256
subnets)
• /52
(4096
subnets)
• /48
(65536
subnets)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
6

7. Default Alloca;on size = /32
• How
many
assignments
can
I
make
?
• 4
billion
/64’s
• 268
million
/60’s
• 17
million
/56’s
• 1million
/52’s
• 65536
/48’s
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
7

8. SubneIng
• Why
do
we
do
subnebng?
• IPv4:
Conserve
address
space
• IPv6:
planning
and
opBmizaBon
for
rouBng
and
security
• Subnets
vs
hosts
–
number
of
hosts
irrelevant
in
IPv6
• There
will
rarely
be
a
need
to
expand
a
/64
subnet
(264
hosts)
• 264
=
18,446,744,073,709,551,616
hosts
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
8

9. IPv6 Prefix
2001:db8:2468:1c5:23a7:1357:331c:a5b
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
9
/16
/32
/48
Host
(/64)

10. A Typical Host Address
2001:db8:2468:1c5:23a7:1357:331c:a5b
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
10
Prefix
(/64)
Host
(/64)

11. /32 Prefix
2001:db8:1234:5678:23a7:2e19:331c:a5b
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
11
Prefix
(/32)
Host
(/64)
Subnet
(32
Bits)

12. /48 Prefix
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
12
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/48)
Host
(/64)
Subnet
(16
Bits)

13. Common Subnet Prefixes
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
13
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/52)
Subnet
(12
Bits)
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/56)
Subnet
(8
Bits)
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/60)
Subnet
(4
Bits)

14. "Nibbles" Boundaries
• A
"nibble"
is
one
hexadecimal
digit
(or
4
bits)
• You
don't
have
to
subnet
based
on
nibbles.
You
can
use
other
prefixes,
ex.
/49,
/51,
/55
etc.
• But
it
is
MUCH
easier
to
idenBfy
addresses
if
you
do
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
14
Hex:
1234
Binary:
0001001000110100

15. If /x is a mul;ple of 4
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
15
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2 0 0 1 0 d b 8 1 2 3 4 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0
/48
48
fixed
bits
80
freely
variable
bits
12
fixed
hex
digits
20
hex
digits
can
take
any
values
: : : : : : :
0
0
0
0
0

16. If /x is NOT a mul;ple of 4
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
16
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2 0 0 1 0 d b 8 1 2 3 4 8 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0
/
50
1
hex
digit
can
only
take
certain
values!
example:
8,
9,
a
or
b
: : : : : : :
50
fixed
bits
78
freely
variable
bits
12
fixed
hex
digits
19
hex
digits
can
take
any
values

17. Only certain hex values possible
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
17
1
0
0
0
Fixed
bits
Variable
bits
8
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
8,
9
,
a
or
b
only!

18. Subnet at Nibble Boundaries
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
18
2001:db8:1234:1000::/56
Prefix
(/48)
Subnet
(16
Bits)
2001:db8:1234:1f00::/56
2001:db8:1234:1100::/56
2001:db8:1234:1200::/56
......

19. Subnet not at Nibble Boundaries
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
19
2001:db8:0001:8000::/50
Prefix
(/50)
Subnet
(14
Bits)
2001:db8:1234:b000::/50
2001:db8:1234:9000::/50
2001:db8:1234:a000::/50

20. “Easy” & “complicated” ranges
• 2001:db8:7::/48
• 2001:db8:7:xxxx:xxxx:xxxx:xxxx:xxxx
• 2001:db8:7:8000::/50
• 2001:db8:7:8xxx:xxxx:xxxx:xxxx:xxxx
• 2001:db8:7:9xxx:xxxx:xxxx:xxxx:xxxx
• 2001:db8:7:axxx:xxxx:xxxx:xxxx:xxxx
• 2001:db8:7:bxxx:xxxx:xxxx:xxxx:xxxx
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
20

21. Key Point: Focus on the 16 bits (4 Nibbles)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
21
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/48)
Host
(/64)
Subnet
(16
Bits)

22. Next Step: Plan Your Subnet Scheme
• MulBple
ways
to
use
the
4
nibbles
(assuming
a
/48)
• Plan
nibbles
by:
• Region
and
site
• LocaBon
• Use
type
(ex.
employees,
students,
guests)
• Business
units
• ApplicaBons
(ex.
data,
voice,
video)
• CombinaBons
of
some
of
the
above
• THERE
IS
NO
SINGLE
RIGHT
ANSWER!
• Will
depend
upon
your
site
and
your
objecBves
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
22

23. Planning Considera;ons
• Do
you
want
to
opBmize
for
your
security
policies?
• Do
you
want
to
make
it
easy
for
firewalls
to
filter
based
on…
locaBon?
user
type?
applicaBons?
• Do
you
want
to
opBmize
for
router
policies
and
performance?
• Do
you
want
to
have
the
smallest
and
most
efficient
rouBng
table
possible?
• Do
you
have
a
higher
or
lower
quanBty
of
certain
types
of
objects?
• For
example,
do
you
only
have
2
locaBons
but
20
types
of
applicaBons?
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
23

24. Example: ISP with /32 Prefix (I)
• Parent
Block:
2402:f500::/32
• StarBng
with
LocaBon
(Region/Division):
• Dhaka
2402:f500:1000::/36
• Chimagong
2402:f500:2000::/36
• Khulna
2402:f500:3000::/36
• Rajshahi
2402:f500:4000::/36
• Sylhet
2402:f500:5000::/36
• Barisal
2402:f500:6000::/36
• So
on
and
so
forth…
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
24

25. Example: ISP with /32 Prefix (II)
• Then
the
PoP
(Region
–
DistribuBon
PoP):
• Dhaka
-­‐
UGC
2402:f500:1000::/40
• Dhaka
-­‐
BUET
2402:f500:1100::/40
• Dhaka
-­‐
NSU
2402:f500:1200::/40
• Dhaka
-­‐
NU
2402:f500:1300::/40
• So
on
and
so
forth…
• Then
the
Site
(Region
–
DistribuBon
PoP
–
Edge
Router):
• Dhaka
–
BUET
–
BUET
2402:f500:1100::/44
• Dhaka
–
BUET
–
DU
2402:f500:1110::/44
• Dhaka
–
BUET
–
BSMMU
2402:f500:1120::/44
• Dhaka
–
BUET
–
JNU
2402:f500:1130::/44
• So
on
and
so
forth…
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
25

26. Example: ISP with /32 Prefix (III)
• Infrastructure
and
Customer
Assignment:
/48
• Infrastructure
2402:f500:1110::/48
• Customer
1
2402:f500:1111::/48
• Customer
2
2402:f500:1112::/48
• Customer
3
2402:f500:1113::/48
• Customer
4
2402:f500:1114::/48
• So
on
and
so
forth
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
26

27. Example #1: Loca;on and Use Type
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
27
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/48)
Subnet
(16
Bits)
LocaBon
(16):
• Building
1
• Building
2
• Building
3
Use
Type
(16):
• Employees
• Servers
• Infrastructure
Individual
Networks
(256):
• LAN
• Interface

28. Example #2: Loca;ons (many) and Use
Type
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
28
2001:db8:1234:5678:23a7:2e91:331c:a5b
Prefix
(/48)
Subnet
(16
Bits)
LocaBon
(256):
• Building
1
• Building
2
• Building
3
Use
Type
(16):
• Employees
• Servers
• Infrastructure
Individual
Networks
(16):
• LAN
• Interface

29. Example #3 – Business Units First (I)
• Start
by
allocaBng
based
on
business
units:
• Corporate:
2001:db8:1a:0000::/52
• Finance:
2001:db8:1a:1000::/52
• MarkeBng:
2001:db8:1a:2000::/52
• Engineering:
2001:db8:1a:3000::/52
• Customer
Support:
2001:db8:1a:4000::/52
• Then
allocate
on
applicaBons
(here
for
one
unit):
• Engineering
-­‐
Data:
2001:db8:1a:3000::/56
• Engineering
-­‐
Voice:
2001:db8:1a:3200::/56
• Engineering
-­‐
Video:
2001:db8:1a:3400::/56
• Engineering
-­‐
Wireless:
2001:db8:1a:3800::/56
• Engineering
-­‐
Management:
2001:db8:1a:3c00::/56
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
29

30. Example #3 – Business Units First (II)
• Next
allocate
based
on
region
(here
for
"Data"):
• Engineering
-­‐
Data
–
Eastern
region:
2001:db8:1a:3000::/60
• Engineering
-­‐
Data
–
Northern
region:
2001:db8:1a:3080::/60
• Engineering
-­‐
Data
–
Western
region:
2001:db8:1a:3040::/60
• Engineering
-­‐
Data
–
Southern
region:
2001:db8:1a:30c0::/60
• Then
allocate
on
individual
sites:
• Engineering
-­‐
Data
-­‐
Northern
region
-­‐
Site
0:
2001:db8:1a:3080::/64
• Engineering
-­‐
Data
-­‐
Northern
region
-­‐
Site
1:
2001:db8:1a:3081::/64
• Engineering
-­‐
Data
-­‐
Northern
region
-­‐
Site
2:
2001:db8:1a:3082::/64
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
30

31. Example #4 – Applica;ons First (I)
• Start
by
allocaBng
based
on
applicaBons:
• Data:
2001:db8:1a:0000::/52
• Voice:
2001:db8:1a:8000::/52
• Video:
2001:db8:1a:4000::/52
• Wireless:
2001:db8:1a:c000::/52
• Management:
2001:db8:1a:2000::/52
• Then
allocate
on
regions
(here
for
one
unit):
• Voice
–
Eastern
region:
2001:db8:1a:8000::/56
• Voice
–
Northern
region:
2001:db8:1a:8800::/56
• Voice
–
Western
region:
2001:db8:1a:8400::/56
• Voice
–
Southern
region:
2001:db8:1a:8c00::/56
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
31

32. Example #4 – Applica;ons First (II)
• Next
allocate
based
on
business
unit:
• Voice
–
Southern
region
–
Corporate:
2001:db8:1a:8c00::/60
• Voice
–
Southern
region
–
Finance:
2001:db8:1a:8c10::/60
• Voice
–
Southern
region
–
MarkeBng:
2001:db8:1a:8c20::/60
• Voice
–
Southern
region
–
Engineering:
2001:db8:1a:8c30::/60
• Voice
–
Southern
region
–
Cust
Support:
2001:db8:1a:8c40::/60
• Then
finally
on
individual
sites:
• Voice
–
Southern–
MarkeBng
–
Site
1:
2001:db8:1a:8c2a::/64
• Voice
–
Southern–
MarkeBng
–
Site
2:
2001:db8:1a:8c29::/64
• Voice
–
Southern–
MarkeBng
–
Site
3:
2001:db8:1a:8c2e::/64
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
32

33. Make an addressing plan (I)
• Number
of
hosts
is
irrelevant
• MulBple
/48s
per
pop
can
be
used
• Separate
blocks
for
infrastructure
and
customers
• /64
for
all
subnets
• autoconfiguraBon
works
• less
typo
errors
because
of
simplicity
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
33

34. Make an addressing plan (II)
• Routers:
• Give
all
routers
the
same
size
block
(Typically
/56
or
/52)
• Minimum:
One
/64
per
interface
• Allow
for
more
interfaces
in
future
• VLAN
Numbers
• OrganizaBon
may
already
have
locaBon/type
planned
into
VLANs
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
34

35. Make an addressing plan (III)
• Use
one
/64
block
(per
site)
for
loopbacks
• One
/128
per
device
• Point-­‐to-­‐Point
ConnecBons
• Reserve
a
/64,
assign
a
/127
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
35

36. Subnet Numbering: Planning For Growth
• MulBple
ways
for
numbering
individual
subnets:
• Numerical
(monotonic)
–
just
increment
by
1:
• 2001:db8:1234:0000::/64
• 2001:db8:1234:1000::/64
• 2001:db3:1234:2000::/64
• Sparse
allocaBon
(RFC
3531)
• 2001:db8:1234:0000::/64
• 2001:db8:1234:8000::/64
• 2001:db3:1234:4000::/64
• Random
allocaBon
• Randomly
choose
numbers
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
36

37. Calcula;ng Requirement of Subnet
• Determine
primary
factor
you
want
to
use
• Ex.
locaBon
• Determine
number
of
needed
groups
• Ex.
15
locaBons,
2
administraBve
groups,
5
future
=
22
total
• Round
up
to
nearest
nibble
• Ex.
22
would
fit
within
2
nibbles
(256
values)
• Decide
what
to
do
with
remaining
nibbles
(if
any)
• ConBnue
subnebng
with
a
secondary
factor
• Don't
subdivide
and
just
have
large
subnets
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
37

38. Servers
• For
servers
you
want
manual
configuraBon
• Use
port
numbers
for
addresses
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
38
-­‐
DNS
Server:
2001:db8:1234:5678::53
-­‐
Web
Server:
2001:db8:1234:5678::80
-­‐
POP
Server:
2001:db8:1234:5678::110
-­‐
etc…

39. Customer assignments
• Give
your
customers
enough
addresses
• Up
to
a
/48
• Register
every
assignment
in
the
APNIC
whois
database
• Customers
and
their
/48
• Customers
have
no
idea
how
to
handle
65536
subnets!
• Give
them
informaBon
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
39

40. IPv6 Address Management
• Your
Excel
sheet
might
not
scale
• There
are
65,536
/48s
in
a
/32
• There
are
65,536
/64s
in
a
/48
•
There
are
16,777,216
/56s
in
a
/32
• Find
a
suitable
IPAM
soluBon
• Free:
GesBóIP,
NIPAP,
TeamIp,
phpIPAM,
NOC
Project,
NetDot,
HaCi,
IPplan,
6Connect,
Infoblox
• Commercial:
Infoblox,
BlueCat,
SolarWinds,
Crypton,
BTDiamondIP,
Icognito,
EfficientIP,
Men
and
Mice
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
40

41. Case Study: BdREN

42. IPv6 Address (2402:F500::/32)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
42
2402
F500
Host
(/64)
0000
0000
Subnet
(32
Bits)
Subnet
(16
Bits)

43. Subnet Plan (/48)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
43
2402
F500
Host
(/64)
0000
0000
Region
(16):
Dhaka:
1
Chimagong:
2
Khulna:
3
So
on…
PoP
(16):
UGC:
1
BUET:
2
NU:
3
So
on…
Client
(256)
SBAU:
1
JU:
2
BUTex:
3
So
on…

44. Client Assignment (/48)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
44
2402
F500
/48
1202
Region
(16)
–
DistribuBon
PoP
(16)
–
Edge
Router(256)
Dhaka
–
BUET
–
DU

45. Client Assignment
Region
DistribuOon
PoP
Client
Assignment
Dhaka
(2402:F500:1000::/36)
UGC
(2402:F500:1000::/40)
BdREN
2402:F500:1000::/48
SAU
2402:F500:1002::/48
JU
2402:F500:1004::/48
BUTex
2402:F500:1006::/48
BUET
(2402:F500:1100::/40)
BUET
2402:F500:1100::/48
DU
2402:F500:1102::/48
BSMMU
2402:F500:1104::/48
JNU
2402:F500:1106::/48
BUP
2402:F500:1108::/48
NU
(2402:F500:1200::/40)
NU
2402:F500:1200::/48
BOU
2402:F500:1202::/48
DUET
2402:F500:1204::/48
BSMRAU
2402:F500:1206::/48
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
45

46. Facts and Challenges
Facts:
• BdREN
is
a
green
field
• All
the
equipment
are
brand
new,
supports
IPv6
• BdREN
has
limited
IPv4
addresses
• Does
not
deals
with
CPEs,
less
hassle
• No
DHCPv6
or
NAT64
issues
Challenges:
• Lack
of
experBse
in
IPv6
address
planning
• Trials
and
errors
• Dual
stack
from
day
1
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
46

47. Case Study: JU

48. IPv6 Address (2402:F500:1004::/48)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
48
2402
F500
Host
(/64)
1004
0000
Subnet
(16
Bits)

49. Subnet Plan (/64)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
49
2402
F500
Host
(/64)
1004
0000
Service
(16):
Data:
1
Voice:
2
Wi-­‐Fi:
3
So
on…
Dept.
(256):
Physics:
1
Math:
2
MMH
Hall:
3
So
on…
Site
(16):
Building:
1
Building:
2
Building:
3
So
on…

50. 0105
Subnet Plan (/64)
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
50
Service
(16)
–
Department
(256)
–
Building
(16)
Data
–
Physics
–
Building
1
2402
F500
Host
(/64)
1004

51. Address Plan: Before
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
51
Descrip6on
Summary
IPv6
Address
VLAN
Physics
Building
10.1.0.0/16
10
Chemistry
Building
10.2.0.0/16
20
Admin
Building
10.3.0.0/16
30
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
…
• IPv4
only
without
proper
plan
• Wi-­‐Fi
was
provided
with
stand-­‐alone
Wireless
Router
with
DHCP
• Mostly
manual
addressing,
no
DHCP
for
wired
users

52. Address Plan: Ajer
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
52
Category
Descrip6on
Summary
IPv6
Address
VLAN
Infrastructure
192.168.0.0/16
2402:F500:1004:0000::/52
Loopback
192.168.10.0/24
2402:F500:1004:0000::/60
Point
to
point
192.168.20.0/24
2402:F500:1004:0010::/60
Remote
Access
192.168.30.0/24
2402:F500:1004:0020::/60
100
…
…
…
…
…
…
…
…
…
…
…
…
Service
10.0.0.0/8
2402:F500:1004:1000::/52
Wired
User
10.10.0.0/16
2402:F500:1004:1100::/56
10
Wireless
User
10.20.0.0/16
2402:F500:1004:1200::/56
20
Voice
10.30.0.0/16
2402:F500:1004:1300::/56
30
Server
Firm
10.40.0.0/16
2402:F500:1004:1400::/56
40
Surveillance
10.50.0.0/16
2402:F500:1004:1500::/56
50
Facility
10.60.0.0/16
2402:F500:1004:1600::/56
60
…
…
…
…
…
…
…
…
…
…
…
…

53. Migra;on
Step
1:
Survey
and
Analysis
• Any
change
required
in
current
Network/ConnecBvity?
• Minor
change
to
make
it
a
hierarchical
fashion
• Any
equipment
that
doesn’t
support
IPv6?
• Upgrading
OS
• Replacing
with
new
one
• No
change
required
• VLAN
and
IPv4
plan
changed?
• Before:
Building-­‐wise
• A0er:
Service-­‐wise
• Prepare
IPv6
plan
• Similar
plan
as
IPv4
• Dual-­‐Stack
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
53

54. Migra;on
Step
2:
ConfiguraBon
(Ongoing)
• Started
with
WAN/Upstream
connecBvity
• P2P
Peering
• StaBc
and
default
route
• ConfiguraBon
test
• Step
by
step
towards
access
• Core
• DistribuBon
• Edge
• ConfiguraBon
test
• Test
from
user
PC
• Wired
user
• Manual
IPv6
address
• DHCPv6
• Separate
server
• Stateful
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
54

55. Challenges in General
• IPv4
inerBa
• We
think
IPv4
is
running
fine
• IPv6
seems
complicated
• Some
thinks
they
have
enough
IPv4
addresses,
why
IPv6?
• Lack
of
experBse
• Fear
to
learn
IPv6
• Less
hands-­‐on
experience
• Incapability/IncompaBbility
of
devices
and
CPEs
• Upgrade
OS
• Purchase
new
equipment
• Involves
cost
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
55

56. Recommenda;ons
• Play
with
the
whole
block,
don’t
take
a
small
porBon
• Ensure
that
all
prefixes
fall
on
nibble
boundaries
• Plan
a
hierarchical
scheme
for
easy
aggregaBon
or
enforcement
of
policies
• Allocate
/64
prefixes
for
all
end
subnets
• Consider
scalability
and
future
potenBal
growth
• Think
about
how
well
your
plan
might
handle
renumbering
• Document
your
planning
thoroughly
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
56

57. Reference and Useful Informa;on
• Internet
Society
Deploy360
Program
• hmp://www.internetsociety.org/deploy360/ipv6/basics/
• hmp://www.internetsociety.org/deploy360/resources/ipv6-­‐address-­‐planning/
• hmp://www.geBpv6.info/
• hmp://www.ipv6actnow.org/
• hmp://datatracker.iet.org/wg/v6ops/
• hmp://www.ripe.net/ripe/docs/ripe-­‐554.html
• hmps://www.ripe.net/lir-­‐services/training/material/IPv6-­‐for-­‐LIRs-­‐
Training-­‐Course/Preparing-­‐an-­‐IPv6-­‐Addressing-­‐Plan.pdf
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
57

58. Ques;on?
bdNOG
3,
Dhaka,
Bangladesh
awal@bdren.net.bd
58
awal@bdren.net.bd