"prefix-list"를 사용한 IPv6 트래픽 필터링 컨피그레이션 예

R1#show running-config
version 15.0
!
hostname R1
!
ip cef
!
!
ipv6 unicast-routing

!-- Enables the forwarding of IPv6 packets.

!
interface Loopback0
 no ip address
 ipv6 address 1111::1/128
 ipv6 ospf 10 area 0

!--- Enables OSPFv3 on the interface and associates !--- the interface looback1 to area 0.

!
interface Loopback1
 no ip address
 ipv6 address 2222::1/128
 ipv6 ospf 10 area 0
!
interface Serial0/0
 no ip address
 ipv6 address 1010:1:1:1::11/64
 ipv6 ospf 10 area 0
 clock rate 2000000
!
!
ipv6 router ospf 10
 router-id 2.2.2.2
 log-adjacency-changes
 distribute-list prefix-list ipv6_all_addresses in

Applies the prefix list ipv6_all_addresses !--- to OSPF for IPv6 routing updates that are received on an interface. !--- Use this command in router configuration mode.

!
ipv6 prefix-list ipv6_all_addresses seq 10 permit AB00::1/128

!--- Creates a prefix-list named ipv6_all_addresses. !--- Seq 10 denotes the sequence number of the !--- prefix list entry being configured. !--- permit/deny permits/denies the network !--- that matches the condition.


ipv6 prefix-list ipv6_all_addresses seq 20 permit AB10::1/128
ipv6 prefix-list ipv6_all_addresses seq 30 permit AB20::1/128
ipv6 prefix-list ipv6_all_addresses seq 40 permit AB30::1/128
ipv6 prefix-list ipv6_all_addresses seq 50 permit AB40::1/128
ipv6 prefix-list ipv6_all_addresses seq 60 permit AB50::1/128
ipv6 prefix-list ipv6_all_addresses seq 70 permit AB60::1/128
ipv6 prefix-list ipv6_all_addresses seq 80 permit AB70::1/128
ipv6 prefix-list ipv6_all_addresses seq 90 deny AB80::1/128
ipv6 prefix-list ipv6_all_addresses seq 100 deny AB90::1/128

!--- Denies the routes AB80::1/128 & AB90::1/128.

!
end

R2#show running-config
version 15.0
!
hostname R2
!
ip cef
!
ipv6 unicast-routing
!
interface Loopback0
 no ip address
 ipv6 address AB00::1/128
 ipv6 ospf 10 area 0
!
interface Loopback1
 no ip address
 ipv6 address AB10::1/128
 ipv6 ospf 10 area 0
!
interface Loopback2
 no ip address
 ipv6 address AB20::1/128
 ipv6 ospf 10 area 0
!
interface Loopback3
 no ip address
 ipv6 address AB30::1/128
 ipv6 ospf 10 area 0
!
interface Loopback4
 no ip address
 ipv6 address AB40::1/128
 ipv6 ospf 10 area 0
!
interface Loopback5
 no ip address
 ipv6 address AB50::1/128
 ipv6 ospf 10 area 0
!
interface Loopback6
 no ip address
 ipv6 address AB60::1/128
 ipv6 ospf 10 area 0
!
interface Loopback7
 no ip address
 ipv6 address AB70::1/128
 ipv6 ospf 10 area 0
!
interface Loopback8
 no ip address
 ipv6 address AB80::1/128
 ipv6 ospf 10 area 0
!
interface Loopback9
 no ip address
 ipv6 address AB90::1/128
 ipv6 ospf 10 area 0

!
interface Serial0/0
 no ip address
 ipv6 address 1010:1:1:1::10/64
 ipv6 ospf 10 area 0
 clock rate 2000000
!
ip forward-protocol nd
!
!
ipv6 router ospf 10
 router-id 1.1.1.1
 log-adjacency-changes
!
end

R1#show ipv6 route ospf
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
O   AB00::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB10::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB20::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB30::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB40::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB50::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB60::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0
OI  AB70::1/128 [110/64]
     via FE80::C007:EFF:FE58:0, Serial0/0

!--- Note that the routes AB80::1/128 and AB90::1/128 !--- originated from lo 8 and lo 9 are not listed here.

R1#show ipv6 prefix-list detail
Prefix-list with the last deletion/insertion: ipv6_all_addresses
ipv6 prefix-list ipv6_all_addresses:
   count: 10, range entries: 0, sequences: 10 - 100, refcount: 3
   seq 10 permit AB00::1/128 (hit count: 1, refcount: 5)
   seq 20 permit AB10::1/128 (hit count: 1, refcount: 1)
   seq 30 permit AB20::1/128 (hit count: 1, refcount: 2)
   seq 40 permit AB30::1/128 (hit count: 1, refcount: 1)
   seq 50 permit AB40::1/128 (hit count: 1, refcount: 3)
   seq 60 permit AB50::1/128 (hit count: 1, refcount: 1)
   seq 70 permit AB60::1/128 (hit count: 1, refcount: 2)
   seq 80 permit AB70::1/128 (hit count: 1, refcount: 1)
   seq 90 deny AB80::1/128 (hit count: 1, refcount: 2)
   seq 100 deny AB90::1/128 (hit count: 1, refcount: 1)

R1#show ipv6 prefix-list summary
Prefix-list with the last deletion/insertion: ipv6_all_addresses
ipv6 prefix-list ipv6_all_addresses:
   count: 10, range entries: 0, sequences: 10 - 100, refcount: 3

!--- This command displays detailed or !--- summarized information about all IPv6 prefix lists.