CLI Reference Guide-R07

Chapter 27 | IP Interface Commands
IPv6 Interface
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response time: 0 ms [FE80::2E0:CFF:FE00:FC] seq_no: 3
response time: 0 ms [FE80::2E0:CFF:FE00:FC] seq_no: 4
response time: 0 ms [FE80::2E0:CFF:FE00:FC] seq_no: 5
Ping statistics for FE80::2E0:CFF:FE00:FC%1/64:
5 packets transmitted, 5 packets received (100%), 0 packets lost (0%)
Approximate round trip times:
Minimum = 0 ms, Maximum = 20 ms, Average = 4 ms
Console#
traceroute6 This command shows the route packets take to the specified destination.
Syntax
traceroute6 {ipv6-address | host-name} [max-failures failure-count]
ipv6-address - The IPv6 address of a neighbor device. You can specify either
a link-local or global unicast address formatted according to RFC 2373 “IPv6
Addressing Architecture,” using 8 colon-separated 16-bit hexadecimal
values. One double colon may be used in the address to indicate the
appropriate number of zeros required to fill the undefined fields.
host-name - A host name string which can be resolved into an IPv6 address
through a domain name server.
failure-count - The maximum number of failures before which the trace
route is terminated. (Range: 1-255)
Default Setting
Maximum failures: 5
Command Mode
Privileged Exec
Command Usage
◆ Use the traceroute6 command to determine the path taken to reach a
specified destination.
◆ The same link-local address may be used by different interfaces/nodes in
different zones (RFC 4007). Therefore, when specifying a link-local address,
include zone-id information indicating the VLAN identifier after the % delimiter.
For example, FE80::7272%1 identifies VLAN 1 as the interface from which the
ping is sent.
◆ A trace terminates when the destination responds, when the maximum
timeout (TTL) is exceeded, or the maximum number of hops is exceeded.
◆ The traceroute command first sends probe datagrams with the TTL value set at
one. This causes the first router to discard the datagram and return an error
message. The trace function then sends several probe messages at each
subsequent TTL level and displays the round-trip time for each message. Not all
devices respond correctly to probes by returning an “ICMP port unreachable”
message. If the timer goes off before a response is returned, the trace function