lab 8-1...

but first a word about gns3...


almost 400 pages of labs in this ccnp route lab manual from cisco, and every one so far done with gns3... how i wish this had been around when i first started a long time ago... how lucky those new to this are...  if they could only incorporate switch fully, this would truly be everything...  i haven't had my home lab on in over a month...

and speaking of switch... the newly minted ccna should start there... in a corporate network the chances of showing your route prowess will be minimal at best... switch will be your bread and butter for the day to day... i'm very pleased i chose switch first, i use it all the time...

my thought is  cisco should give equal time to switch in ccna, if not more... perhaps even a switch specialist cert for ccna...

he arrives with ipv6...

r1

int lo0
ip add 10.1.1.1 255.255.255.0
ipv6 add fec0::1:1/112

r2

int lo0
ip add 10.1.2.1 255.255.255.0
ipv6 add fec0::2:1/112

r3
int lo0
ip add 10.1.3.1 255.255.255.0
ipv6 add fec0::3:1/112

r1#sh run int lo0
Building configuration...

Current configuration : 90 bytes
!
interface Loopback0
 ip address 10.1.1.1 255.255.255.0
 ipv6 address FEC0::1:1/112

r1

int s1/1
ipv6 add fec0::12:1/112
clock rat 64000
band 64
no shut

int s1/3
ipv6 add fec0::13:1/112
band 64
no shut

r2

int s1/1
ipv6 add fec0::12:2/112
band 64
no shut

r3
int s1/3
ipv6 add fec0::13:3/112
clock rat 64000
band 64
no shut

r1#ping fec0::12:2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/5/12 ms
r1#ping fec0::13:3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::13:3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/5/8 ms

r2#ping fec0::12:1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::12:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/8 ms

r3#ping fec0::13:1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FEC0::13:1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/8 ms

r1#sh ipv6 int s1/1
Serial1/1 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::C800:BFF:FE13:8
  No Virtual link-local address(es):
  Global unicast address(es):
    FEC0::12:1, subnet is FEC0::12:0/112

we can modify our topology by changing this to be more accomodating to our simple minds...

r1

int s1/1
ipv6 add fe80::1 link-local


r2

int s1/1
ipv6 add fe80::2 link-local

r2#ping fe80::1
Output Interface: serial1/1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::1, timeout is 2 seconds:
Packet sent with a source address of FE80::2%Serial1/1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms

r2#sh ipv6 int s1/1
Serial1/1 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::2

very pretty, but unnecessary...

from stretch over at packet life...
http://packetlife.net/blog/2008/aug/4/eui-64-ipv6/

One of IPv6's key benefits over IPv4 is its capability for automatic interface addressing. By implementing the IEEE's 64-bit Extended Unique Identifier (EUI-64) format, a host can automatically assign itself a unique 64-bit IPv6 interface identifier without the need for manual configuration or DHCP. This is accomplished on Ethernet interfaces by referencing the already unique 48-bit MAC address, and reformatting that value to match the EUI-64 specification.
RFC 2373 dictates the conversion process, which can be described as having two steps. The first step is to convert the 48-bit MAC address to a 64-bit value. To do this, we break the MAC address into its two 24-bit halves: the Organizationally Unique Identifier (OUI) and the NIC specific part. The 16-bit hex value 0xFFFE is then inserted between these two halves to form a 64-bit address.

r2

int f0/0
ipv6 add fec0:23::/64 eui-64
no shut

r3

int f0/0
ipv6 add fec0:23::/64 eui-64
no shut

r2#sh ipv6 int f0/0
FastEthernet0/0 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::C801:BFF:FE13:8
  No Virtual link-local address(es):
  Global unicast address(es):
    FEC0:23::C801:BFF:FE13:8, subnet is FEC0:23::/64 [EUI]
  Joined group address(es):
    FF02::1
    FF02::1:FF13:8
  MTU is 1500 bytes
  ICMP error messages limited to one every 100 milliseconds
  ICMP redirects are enabled
  ICMP unreachables are sent
  ND DAD is enabled, number of DAD attempts: 1
  ND reachable time is 30000 milliseconds (using 30000)
  ND NS retransmit interval is 1000 milliseconds

r2#sh ipv6 int brie

FastEthernet0/0        [up/up]

    FE80::C801:BFF:FE13:8

    FEC0:23::C801:BFF:FE13:8

r3#ping  FEC0:23::C801:BFF:FE13:8

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to FEC0:23::C801:BFF:FE13:8, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 4/6/16 ms

r2#ping FEC0:23::C802:BFF:FE13:8

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to FEC0:23::C802:BFF:FE13:8, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/8 ms

very exciting...