IPv6 Routing Example #1

R1

interface Loopback0

ipv6 address 2001::1/128

 ipv6 ospf 1 area 0

interface Loopback1

ipv6 address 2001:DB8::1/128

 ipv6 ospf 1 area 0

interface FastEthernet0/0

 ipv6 address 2001:192:12::1/64

 ipv6 ospf network point-to-point

 ipv6 ospf 1 area 0

ipv6 router ospf 1

 router-id 1.1.1.1

R2

interface Loopback0

ipv6 address 2001::2/128

 ipv6 ospf 1 area 0

interface Loopback1

ipv6 address 2001:DB8::2/128

 ipv6 ospf 1 area 0

interface FastEthernet0/0

ipv6 address 2001:192:12::2/64

 ipv6 ospf network point-to-point

 ipv6 ospf 1 area 0

interface FastEthernet0/1

ipv6 address 2001:192:23::2/64

 ipv6 rip RIPng enable

ipv6 router ospf 1

 router-id 2.2.2.2

redistribute rip RIPng include-connected

ipv6 router rip RIPng

 redistribute ospf 1 include-connected

R3

interface Loopback0

 ipv6 address 2001::3/128

 ipv6 rip RIPng enable

interface Loopback1

ipv6 address 2001:DB8::3/128

 ipv6 rip RIPng enable

interface FastEthernet0/0

ipv6 address 2001:192:23::3/64

 ipv6 rip RIPng enable

interface FastEthernet0/1

ipv6 address 2001:192:34::3/64

ipv6 router rip RIPng

 redistribute bgp 300

router bgp 300

bgp router-id 3.3.3.3

 bgp log-neighbor-changes

 neighbor 2001:192:34::4 remote-as 400

address-family ipv6

  neighbor 2001:192:34::4 activate

  redistribute rip RIPng include-connected

R4

interface Loopback0

ipv6 address 2001::4/128

R4#sh run int lo1

interface Loopback1

 no ip address

 ipv6 address 2001:DB8::4/128

interface FastEthernet0/0

ipv6 address 2001:192:34::4/64

router bgp 400

bgp router-id 4.4.4.4

 bgp log-neighbor-changes

 neighbor 2001:192:34::3 remote-as 300

address-family ipv6

  neighbor 2001:192:34::3 activate

  network 2001::4/128

  network 2001:DB8::4/128

Tasks

Filter the prefix 2001:DB8::1/128 from being installed in R2 routing table

ipv6 prefix-list MSSK seq 5 deny 2001:DB8::1/128

ipv6 prefix-list MSSK seq 10 permit ::/0 le 128

ipv6 router ospf 1

distribute-list prefix-list MSSK in FastEthernet0/0

R2#sh ipv6 route ospf 

IPv6 Routing Table - 12 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route, M - MIPv6

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

       D - EIGRP, EX - EIGRP external

O   2001::1/128 [110/10]

     via FE80::C000:74FF:FEF5:0, FastEthernet0/0

Assign a metric of 5 to the prefix 2001::1/128 when propagated to the RIP domain

ipv6 prefix-list METRIC seq 5 permit 2001::1/128

route-map MAP permit 10

 match ipv6 address prefix-list METRIC

 set metric 5

route-map MAP permit 20

R2(config-route-map)#ipv6 router rip RIPng

R2(config-rtr)#redistribute ospf 1 route-map MAP include-connected

R3#sh ipv6 route rip 

IPv6 Routing Table - 13 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route, M - MIPv6

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

       D - EIGRP, EX - EIGRP external

R   2001::1/128 [120/6]

     via FE80::C001:74FF:FEF5:1, FastEthernet0/0

R   2001::2/128 [120/2]

     via FE80::C001:74FF:FEF5:1, FastEthernet0/0

R   2001:192:12::/64 [120/2]

     via FE80::C001:74FF:FEF5:1, FastEthernet0/0

R   2001:DB8::2/128 [120/2]

     via FE80::C001:74FF:FEF5:1, FastEthernet0/0

On R3 assign the 2001:DB8::2/128 prefix a weight of 16384

R3(config)#ipv6 prefix-list WEIGHT seq 5 permit 2001:DB8::2/128

R3(config)#route-map MAP1 permit 10

R3(config-route-map)#match ipv6 address prefix-list WEIGHT

R3(config-route-map)#set weight 16384

R3(config-route-map)#route-map MAP1 permit 20

R3(config-route-map)#router bgp 300

R3(config-router)#address-family ipv6 

R3(config-router-af)#redistribute rip RIPng include-connected route-map MAP1

R3#sh bgp ipv6 unicast 

BGP table version is 14, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path

*> 2001::1/128      ::                       6         32768 ?

*> 2001::2/128      ::                       2         32768 ?

*> 2001::3/128      ::                       0         32768 ?

*> 2001::4/128      2001:192:34::4           0             0 400 i

*> 2001:192:12::/64 ::                       2         32768 ?

*> 2001:192:23::/64 ::                       0         32768 ?

*> 2001:DB8::2/128  ::                       2         16384 ?

*> 2001:DB8::3/128  ::                       0         32768 ?

*> 2001:DB8::4/128  2001:192:34::4           0             0 400 i