CCIE-10-IPv6-TS

实验条件

网络拓朴

环境配置

在我的资源里可以下载（就在这篇文章的开头也可以下载）

开始Troubleshooting

检查所有接口的配置

Phone#show ipv int br
Ethernet0/0            [up/up]
    FE80::A8BB:CCFF:FE02:3000
    2001:CC1E:BEEF:25::100
Ethernet0/1            [administratively down/down]
    unassigned
Ethernet0/2            [administratively down/down]
    unassigned
Ethernet0/3            [administratively down/down]
    unassigned

R25#show ipv int br
Ethernet0/0            [up/up]
    FE80::A8BB:CCFF:FE02:2000
    2001:CC1E:BEEF:25::1
Ethernet0/1            [up/up]
    FE80::A8BB:CCFF:FE02:2010
    2001:CC1E:BEEF:2225::18
Loopback0              [up/up]
    FE80::A8BB:CCFF:FE02:2000
    2001:CC1E:BEEF::2225
R25#

R22#show ipv int br
Ethernet0/0            [up/up]
    unassigned
Ethernet0/1            [up/up]
    FE80::A8BB:CCFF:FE01:F010
    2001:CC1E:BEEF:2225::17
Ethernet1/0            [up/up]
    FE80::A8BB:CCFF:FE01:F001
    2001:CC1E:ABCD:2622::13

其它的两台路由器没有密码，应该是不需要调整的，
直接ping Server4的IPv6地址

Phone#ping 2001:BEEF:CAFE::26
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:BEEF:CAFE::26, timeout is 2 seconds:
UUUUU
Success rate is 0 percent (0/5)
Phone#traceroute 2001:BEEF:CAFE::26
Type escape sequence to abort.
Tracing the route to 2001:BEEF:CAFE::26

  1 2001:CC1E:BEEF:25::1 !U  !U  !U 
Phone#

ping包出现U表示目标不可达的意思, 就是路由器在查询路由表的时候没有目标网络的路由表，而且也没有默认路由，这时就回给源路由器一个目标不可达，源路由器就显示一个U的标记；

数据包到达了网关R25之后就没有下一跳的路由了，查询R25的路由相关配置

R25#show ipv route      
IPv6 Routing Table - default - 6 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP
       H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea
       IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO
       ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
       RL - RPL, O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1
       OE2 - OSPF ext 2, ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
       la - LISP alt, lr - LISP site-registrations, ld - LISP dyn-eid
       lA - LISP away, a - Application
LC  2001:CC1E:BEEF::2225/128 [0/0]
     via Loopback0, receive
C   2001:CC1E:BEEF:25::/64 [0/0]
     via Ethernet0/0, directly connected
L   2001:CC1E:BEEF:25::1/128 [0/0]
     via Ethernet0/0, receive
C   2001:CC1E:BEEF:2225::/64 [0/0]
     via Ethernet0/1, directly connected
L   2001:CC1E:BEEF:2225::18/128 [0/0]
     via Ethernet0/1, receive
L   FF00::/8 [0/0]
     via Null0, receive
R25#show run | s router          
router bgp 65101
 bgp log-neighbor-changes
 neighbor 123.1.2.17 remote-as 12345
 !
 address-family ipv4
  neighbor 123.1.2.17 activate
 exit-address-family
 !
 address-family ipv6
  network 2001:CC1E:BEEF::2225/128
  network 2001:CC1E:BEEF:25::/64
  neighbor 123.1.2.17 activate
 exit-address-family

没有目标的路由信息，路由协议采用的是BGP协议， 查看一下BGP邻居状态情况

R25#show ip bgp summary
BGP router identifier 202.65.1.5, local AS number 65101
BGP table version is 1, main routing table version 1

Neighbor