3. CE3#show bgp ipv6 unicast
BGP table version is 7, local router ID is 10.10.10.3
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
!
Network Next Hop Metric LocPrf Weight Path
*> 2001:1:1:1::/64 2001:1:1:3::1 0 65000 9598 65001 ?
*> 2001:1:1:2::/64 2001:1:1:3::1 0 65000 9598 65002 ?
*> 2001:1:1:3::/64 :: 0 32768 ?
*> 2001:1:3:1::/64 2001:1:1:3::1 0 65000 9598 65001 ?
*> 2001:1:3:2::/64 2001:1:1:3::1 0 65000 9598 65002 ?
*> 2001:1:3:3::/64 :: 0 32768 ?
BGP4+
Native IPv6
(OSPF v3)
Native IPv6
(OSPF v3)
2001:1:3:1::/64
2001:1:3:2::/64
2001:1:3:3::/64
BGP4+
3
10. 2001:1:3:1::/64
2001:1:3:2::/64
2001:1:3:3::/64
10
P1#show bgp ipv6 unicast
BGP table version is 19, local router ID is 10.0.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
!
Network Next Hop Metric LocPrf Weight Path
*>i 2001:1:1:1::/64 2001:1:2::FFFF:1
0 100 0 65001 ?
*>i 2001:1:1:2::/64 2001:1:2::FFFF:4
0 100 0 65002 ?
*>i 2001:1:1:3::/64 2001:1:2::FFFF:3
0 100 0 65000 65003 ?
*>i 2001:1:3:1::/64 2001:1:2::FFFF:1
0 100 0 65001 ?
…(snip)
IPv6バックボーンのコアルータでも、
BGP4+によるIPv6プレフィックスが
伝搬されるようになった
16. 解決策4
IPv4バックボーン化を前提とした6PE(IPv6 over MPLS)
を構築する。IPv4バックボーン内で、LDPv4によるMPLS
パスを有効にして、コアルータでのIPv6プレフィックのルッ
クアップ処理が不要になるようにする。
2001:1:3:1::/64
2001:1:3:2::/64
2001:1:3:3::/64
16
IPv4バックボーン化
LDPv4
6PE(IPv6 over MPLS)の挙動を確認してみる
17. 6PE(IPv6 over MPLS)でのIPv6プレフィックス情報
の経路広告
*> 2001:1:1:1::/64 2001:1:1:3::1 0 65000 9598 65001 ?
*> 2001:1:1:2::/64 2001:1:1:3::1 0 65000 9598 65002 ?
*> 2001:1:1:3::/64 :: 0 32768 ?
*> 2001:1:3:1::/64 2001:1:1:3::1 0 65000 9598 65001 ?
*> 2001:1:3:2::/64 2001:1:1:3::1 0 65000 9598 65002 ?
*> 2001:1:3:3::/64 :: 0 32768 ?
17
CE3#show bgp ipv6 unicast
BGP table version is 7, local router ID is 10.10.10.3
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
!
Network Next Hop Metric LocPrf Weight Path
Native IPv4
(LDPv4)
Native IPv4
(LDPv4)
BGP4+
BGP4+
2001:1:3:1::/64
2001:1:3:2::/64
2001:1:3:3::/64
18. 6PE(IPv6 over MPLS)を介したエンドエンド疎通確認
CE3#ping ipv6 2001:1:1:1::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:1:1:1::1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 192/239/324 ms
18
2001:1:3:1::/64
2001:1:3:2::/64
2001:1:3:3::/64
宛先
送信元
LDPv4
Native IPv4
(LDPv4)
Native IPv4
(LDPv4)