WB1 9.3 IPv6 Global Aggregatable Addressing

9.3 IPv6 Global Aggregatable Addressing

• Configure globally aggregatable IPv6 addresses in the format
2001:X:0:1234::Y/64 on the Frame-Relay interfaces of R1, R2, R3, R4,
and R5.
Here X is your rack number in decimal notation, (e.g. 10 for Rack 10, not
the hex 0A) and Y is your router number (7 for SW1).

-----------------

R1:
interface Serial 0/0
ipv6 address 2001:1:0:1234::1/64
frame-relay map ipv6 2001:1:0:1234::5 105
frame-relay map ipv6 2001:1:0:1234::2 105
frame-relay map ipv6 2001:1:0:1234::3 105
frame-relay map ipv6 2001:1:0:1234::4 105

R2:
interface Serial 0/0
ipv6 address 2001:1:0:1234::2/64
frame-relay map ipv6 2001:1:0:1234::5 205
frame-relay map ipv6 2001:1:0:1234::1 205
frame-relay map ipv6 2001:1:0:1234::3 205
frame-relay map ipv6 2001:1:0:1234::4 205

R3:
interface Serial 1/0
ipv6 address 2001:1:0:1234::3/64
frame-relay map ipv6 2001:1:0:1234::5 305
frame-relay map ipv6 2001:1:0:1234::1 305
frame-relay map ipv6 2001:1:0:1234::2 305
frame-relay map ipv6 2001:1:0:1234::4 305

R4:
interface Serial 0/0/0
ipv6 address 2001:1:0:1234::4/64
frame-relay map ipv6 2001:1:0:1234::5 405
frame-relay map ipv6 2001:1:0:1234::1 405
frame-relay map ipv6 2001:1:0:1234::2 405
frame-relay map ipv6 2001:1:0:1234::3 405

R5:
interface Serial 0/0/0
ipv6 address 2001:1:0:1234::5/64
frame-relay map ipv6 2001:1:0:1234::1 501
frame-relay map ipv6 2001:1:0:1234::2 502
frame-relay map ipv6 2001:1:0:1234::3 503
frame-relay map ipv6 2001:1:0:1234::4 504

-----------------

Globally Aggregatable IPv6 addresses, AKA global unicast addresses, are
publicly allocated and routable on the Internet. Global unicast addresses start
with the binary prefix 001 (2000::/3), and therefore encompass the range 2000:: -
3FFF::. By design the allocation of these addresses through Internet registries
such as ARIN and APNIC are hierarchical, unlike IPv4 allocation. RIPE-450 (IPv6
Address Allocation and Assignment Policy) defines this hierarchical design
methodology.

Although this range is extremely large – 1/8th of the total IPv6 address space –
generally only the prefix 2001::/16 is currently used for allocation. Other ranges,
such as the 6to4 Tunnel range of 2002::/16, are generally used for special
purposes.

Once assigned, the behavior of a global unicast address is identical to that of a
ULA address, but as its name implies it has global routing significance.

-----------------

Rack1R5#

ping 2001:1:0:1234::1
ping 2001:1:0:1234::2
ping 2001:1:0:1234::3
ping 2001:1:0:1234::4
ping 2001:1:0:1234::5

show frame-relay map