■GNS3でIPv6/OSPFv3環境を構築してみる。 c3725の4台構成とした。 $ echo "[R1] -- [R2] -- VLINK -- [R3] -- [R4]" [R1] -- [R2] -- VLINK -- [R3] -- [R4]
■以下を参考に、エリア番号等細かい値は若干変更した。 OSPFv3 仮想リンクの設定例 http://www.cisco.com/cisco/web/support/JP/110/1109/1109560_ospfv3-vlink-config.html ■IPv6の設定 $ for n in `seq 1 4`;do \ echo -e "en\nconf t\nhostname R${n}"; \ echo "ipv6 unicast-routing"; \ echo "ipv6 cef"; \ echo "ipv6 router ospf 1"; \ echo " router-id ${n}.${n}.${n}.${n}"; \ echo "int fa0/0"; \ echo " ipv6 enable"; \ if [ $n -eq 1 -o $n -eq 3 ];then \ echo " ipv6 address 2011:8:8:${n}::${n}/64"; \ echo " no shut"; \ elif [ $n -eq 4 -o $n -eq 2 ];then \ echo " ipv6 address 2011:8:8:$(($n-1))::${n}/64"; \ echo " no shut"; \ fi; \ if [ $n -eq 2 -o $n -eq 3 ];then \ echo "int s1/0"; \ echo " clock rate 64000"; \ echo " ipv6 enable"; \ if [ $n -eq 2 ];then \ echo " ipv6 address 2011:8:8:${n}::${n}/64"; \ elif [ $n -eq 3 ];then \ echo " ipv6 address 2011:8:8:$(($n-1))::${n}/64"; \ fi echo " no shut"; \ fi; \ echo "int lo0"; \ echo " ipv6 enable"; \ echo " ipv6 address FE01:${n}::${n}/64"; \ echo " no shut"; \ echo -e "end\nwrite memory\n"; \ done ■OSPFv3エリアをインターフェイスに紐付け ! R1 en conf t int lo0 ipv6 ospf 1 area 0 int f0/0 ipv6 ospf 1 area 0 end write memory ! R2 en conf t int lo0 ipv6 ospf 1 area 0 ipv6 router ospf 1 area 1 virtual-link 3.3.3.3 int f0/0 ipv6 ospf 1 area 0 int s1/0 ipv6 ospf 1 area 1 end write memory ! R3 en conf t int lo0 ipv6 ospf 1 area 1 ipv6 router ospf 1 area 1 virtual-link 2.2.2.2 int f0/0 ipv6 ospf 1 area 2 int s1/0 ipv6 ospf 1 area 1 end write memory ! R4 en conf t int lo0 ipv6 ospf 1 area 2 int f0/0 ipv6 ospf 1 area 2 end write memory ■OSPFv3の状態確認 R1#show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 2.2.2.2 1 2WAY/DROTHER 00:00:38 4 FastEthernet0/0 R2#show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 1.1.1.1 1 FULL/BDR 00:00:38 4 FastEthernet0/0 3.3.3.3 1 FULL/ - - 15 OSPFv3_VL0 3.3.3.3 1 FULL/ - 00:00:30 6 Serial1/0 R3#show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 2.2.2.2 1 FULL/ - - 15 OSPFv3_VL0 2.2.2.2 1 FULL/ - 00:00:36 6 Serial1/0 4.4.4.4 1 FULL/DR 00:00:32 4 FastEthernet0/0 R4#show ipv6 ospf neighbor Neighbor ID Pri State Dead Time Interface ID Interface 3.3.3.3 1 FULL/BDR 00:00:31 4 FastEthernet0/0 R1#show ipv6 route ospf IPv6 Routing Table - 11 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 OI 2011:8:8:2::/64 [110/74] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 OI 2011:8:8:2::2/128 [110/10] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 OI 2011:8:8:3::/64 [110/84] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 O FE01:2::2/128 [110/10] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 OI FE01:3::3/128 [110/74] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 OI FE01:4::4/128 [110/84] via FE80::C001:6CFF:FE94:0, FastEthernet0/0 R2#show ipv6 route ospf IPv6 Routing Table - 11 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 OI 2011:8:8:3::/64 [110/74] via FE80::C002:6CFF:FE94:0, Serial1/0 O FE01:1::1/128 [110/10] via FE80::C000:6CFF:FE94:0, FastEthernet0/0 O FE01:3::3/128 [110/64] via FE80::C002:6CFF:FE94:0, Serial1/0 OI FE01:4::4/128 [110/74] via FE80::C002:6CFF:FE94:0, Serial1/0 R3#show 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 2011:8:8:1::/64 [110/74] via FE80::C001:6CFF:FE94:0, Serial1/0 O 2011:8:8:2::2/128 [110/64] via FE80::C001:6CFF:FE94:0, Serial1/0 O FE01:1::1/128 [110/74] via FE80::C001:6CFF:FE94:0, Serial1/0 O FE01:2::2/128 [110/64] via FE80::C001:6CFF:FE94:0, Serial1/0 O FE01:4::4/128 [110/10] via FE80::C003:6CFF:FE94:0, FastEthernet0/0 R4#show ipv6 route ospf IPv6 Routing Table - 11 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 OI 2011:8:8:1::/64 [110/84] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 OI 2011:8:8:2::/64 [110/74] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 OI 2011:8:8:2::2/128 [110/74] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 OI FE01:1::1/128 [110/84] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 OI FE01:2::2/128 [110/74] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 OI FE01:3::3/128 [110/10] via FE80::C002:6CFF:FE94:0, FastEthernet0/0 ■OSPFv3の疎通確認 R1#ping ipv6 FE01:4::4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to FE01:4::4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 60/71/88 ms R4#ping ipv6 FE01:1::1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to FE01:1::1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 56/61/76 ms ■GNS3のトポロジー => show run autostart = False [127.0.0.1:7203] workingdir = /tmp udp = 10301 [[3725]] image = /Images/ios/c3725-adventerprisek9-mz.124-15.T14.image idlepc = 0x601c9390 sparsemem = True ghostios = True [[ROUTER R4]] model = 3725 console = 2104 aux = 2504 cnfg = /Projects/ccnp_IPv6/configs/R4.cfg f0/0 = R3 f0/0 [[ROUTER R1]] model = 3725 console = 2101 aux = 2501 cnfg = /Projects/ccnp_IPv6/configs/R1.cfg f0/0 = R2 f0/0 [[ROUTER R2]] model = 3725 console = 2102 aux = 2502 cnfg = /Projects/ccnp_IPv6/configs/R2.cfg f0/0 = R1 f0/0 slot1 = NM-4T s1/0 = R3 s1/0 [[ROUTER R3]] model = 3725 console = 2103 aux = 2503 cnfg = /Projects/ccnp_IPv6/configs/R3.cfg f0/0 = R4 f0/0 slot1 = NM-4T s1/0 = R2 s1/0
