Thursday, March 23, 2006

 

IPv6 ping command. (Question #46)

Consider the following from a router configured for IPv6 routing

R2#ping ipv6 FE80::A8BB:CCFF:FE00:8300
Output Interface: ethernet0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::A8BB:CCFF:FE00:8300, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/24/32 ms
R2#ping ipv6 2001:1111::A8BB:CCFF:FE00:8300

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:1111::A8BB:CCFF:FE00:8300, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/24/40 ms
R2#


Why was I prompted for an output interface for the first ping command but not for the second ping command?

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