8.3.1.2 Packet Tracer - EIGRP IPv4 and IPv6 Skills Integration Challenge

8.3.1.2 Packet Tracer - EIGRP IPv4 and IPv6 Skills Integration Challenge

This one took me a long time because I could not summirize the ipv6 addresses. I had to go do some practice exercises with IPv6 CIDR (https://www.ultratools.com/tools/ipv6CIDRToRange) before I finally got on the right track.

Here is how I did my summary for IPv6

Networks
2001:DB8:1:1:A100::/72
2001:DB8:1:1:A200::/72
2001:DB8:1:1:A300::/72
2001:DB8:1:1:A400::/72

The normal network range for ipv6 is /64, so here 12 extra bits are borrowed

2001:DB8:1:1: = 16+16+16+16 = 64
A100:: /= 16+16+1616
A100 through A400 = 4 (1010)+4 (1through 4) +4 (0000)+4 (0000)   = 16 bits
Address A100 = 1010 0001 0000 0000
Address A200 = 1010 0010 0000 0000
Address A300 = 1010 0011 0000 0000
Address A400 = 1010 0100 0000 0000
The common bits in this address are 1010 0, which is 1+1+1+1+1 =5 bits

2001:DB8:1:1: = 64 bits
+ 5 bits of 1010 0...
64 bits + 5 bits = 71 bits, starting with 0

Summary address is 2001:DB8:1:1:A000::/71

For networks
2001:DB8:1:1:BB80::/76
2001:DB8:1:1:BB90::/76
2001:DB8:1:1:BBA0::/76
2001:DB8:1:1:BBB0::/76

If the network mask is 76, and the normal network range for ipv6 is /64, so here 10 extra bits are borrowed
2001:DB8:1:1 = 64 bits
BB80::/= 16+16+16+16 bits
BB80  through BBB0 = 4 (B) + 4(B) + 4 (???) + 4 (0) = 16 bits

BB80 = 1011 1011 1000 0000
BB90 = 1011 1011 1001 0000
BBA0 = 1011 1011 1010 0000
BBB0 = 1011 1011 1011 0000
The common bits for this address are 1011 1011 10, which are 4+4+2 = 10 bits

2001:DB8:1:1 = 64 bits
1011 1011 10 = 10 bits, starting with 1 0  in positions 8 and 4, which means that the summary network will start with 80
64 bits + 10 bits = 74 bits

Summary address 2001:DB8:1:1:BB80::/74


===============

R1

hostname R1

interface Loopback8
ip address 172.31.0.1 255.255.255.128
!
interface Loopback9
ip address 172.31.0.129 255.255.255.128
!
interface Loopback10
ip address 172.31.1.1 255.255.255.128
!
interface Loopback11
ip address 172.31.1.129 255.255.255.128
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
ip address 172.31.6.2 255.255.255.252
ip summary-address eigrp 1 172.31.0.0 255.255.248.0 5
!
interface Serial0/0/1
no ip address
clock rate 2000000
shutdown
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
eigrp router-id 11.11.11.11
network 172.31.6.0 0.0.0.3


!

R2

hostname R2

interface Loopback1
ip address 10.10.0.1 255.255.255.0
!
interface Loopback2
ip address 10.10.1.1 255.255.255.0
!
interface Loopback3
ip address 10.10.2.1 255.255.254.0
!
interface Loopback4
ip address 10.10.4.1 255.255.252.0
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
no ip address
clock rate 2000000
shutdown
!
interface Serial0/0/1
ip address 10.10.8.2 255.255.255.252
ip summary-address eigrp 1 10.10.0.0 255.255.240.0
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
eigrp router-id 22.22.22.22
network 10.10.8.0 0.0.0.3

 network 10.10.0.0 0.0.15.255

IPv4-Edge

hostname IPv4-Edge
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
ip address 172.31.6.1 255.255.255.252
clock rate 64000
!
interface Serial0/0/1
ip address 10.10.8.1 255.255.255.252
clock rate 64000
!
interface Serial0/1/0
ip address 209.165.200.226 255.255.255.224
!
interface Serial0/1/1
no ip address
clock rate 2000000
shutdown
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
eigrp router-id 33.33.33.33
redistribute static
network 172.31.6.0 0.0.0.3

 network 10.10.8.0 0.0.0.3

R3

hostname R3
!

ipv6 unicast-routing

interface Loopback0
no ip address
ipv6 address 2001:DB8:1:1:A000::1/72
ipv6 eigrp 1
!
interface Loopback1
no ip address
ipv6 address 2001:DB8:1:1:A100::1/72
ipv6 eigrp 1
!
interface Loopback2
no ip address
ipv6 address 2001:DB8:1:1:A200::1/72
ipv6 eigrp 1
!
interface Loopback3
no ip address
ipv6 address 2001:DB8:1:1:A300::1/72
ipv6 eigrp 1
!
interface Loopback4
no ip address
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
no ip address
ipv6 address 2001:DB8:A001:7::2/64
ipv6 eigrp 1
ipv6 summary-address eigrp 1 2001:DB8:1:1:A000::/71 5
!
interface Serial0/0/1
no ip address
clock rate 2000000
shutdown
!
interface Vlan1
no ip address
shutdown
!
ipv6 router eigrp 1
eigrp router-id 11.11.11.11

no shutdown

R4

hostname R4
!
ipv6 unicast-routing
!
interface Loopback8
no ip address
ipv6 address 2001:DB8:1:1:BB80::1/76
ipv6 eigrp 1
!
interface Loopback9
no ip address
ipv6 address 2001:DB8:1:1:BB90::1/76
ipv6 eigrp 1
!
interface Loopback10
no ip address
ipv6 address 2001:DB8:1:1:BBA0::1/76
ipv6 eigrp 1
!
interface Loopback11
no ip address
ipv6 address 2001:DB8:1:1:BBB0::1/76
ipv6 eigrp 1
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
no ip address
clock rate 2000000
shutdown
!
interface Serial0/0/1
no ip address
ipv6 address 2001:DB8:A001:6::2/64
ipv6 eigrp 1
ipv6 summary-address eigrp 1 2001:DB8:1:1:BB80::/74 5
!
interface Vlan1
no ip address
shutdown
!
ipv6 router eigrp 1
eigrp router-id 22.22.22.22
no shutdown

!

IPv6-Edge

hostname IPv6-Edge

ipv6 unicast-routing

interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
no ip address
ipv6 address 2001:DB8:A001:6::1/64
ipv6 eigrp 1
clock rate 64000
!
interface Serial0/0/1
no ip address
ipv6 address 2001:DB8:A001:7::1/64
ipv6 eigrp 1
clock rate 64000
!
interface Serial0/1/0
no ip address
ipv6 address 2001:DB8:CAFE:1::2/64
!
interface Serial0/1/1
no ip address
clock rate 2000000
shutdown
!
interface Vlan1
no ip address
shutdown
!
ipv6 router eigrp 1
eigrp router-id 33.33.33.33
no shutdown
redistribute static
!
ip classless
!
ip flow-export version 9
!
ipv6 route ::/0 Serial0/1/0