Ccna routing and Switching Complete Study Guide

sh ipv6 int brief

FastEthernet0/0            [up/up]

    FE80::21A:6DFF:FE37:A44E

    2001:DB8:3C4D:3:21A:6DFF:FE37:A44E

FastEthernet0/1            [up/up]

    FE80::21A:6DFF:FE37:A44F

    2001:DB8:3C4D:2:21A:6DFF:FE37:A44F

 

R2#

sh ipv6 int brief

FastEthernet0/0            [up/up]

    FE80::21A:6DFF:FE64:9B2

    2001:DB8:3C4D:1:21A:6DFF:FE37:A443

FastEthernet0/1            [up/up]

    FE80::21A:6DFF:FE64:9B3

    2001:DB8:3C4D:2:21A:6DFF:FE64:9B3

 

R1#

ping 2001:DB8:3C4D:2:21A:6DFF:FE64:9B3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to ping 2001:DB8:3C4D:2:21A:6DFF:FE64:9B3, 

timeout

is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/8 ms

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Troubleshooting IPv6 Network Connectivity 

855

In the preceding output, you can see that I now have the IPv6 addresses for both the 

R1 and R2 directly connected interfaces. The output also shows that I used the Ping 

program to verify layer 3 connectivity. Just as with IPv4, we need to resolve the logical 

(IPv6) address to a MAC address in order to communicate on the local LAN. But unlike 

IPv4, IPv6 doesn’t use ARP—it uses ICMPv6 neighbor solicitations instead—so after the 

successful ping, we can now see the neighbor resolution table on R1:

R1#