Command Usage
•
Use the ping6 command to see if another site on the network can be reached, or to
evaluate delays over the path.
•
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.
•
When pinging a host name, be sure the DNS server has been enabled (see
page
40-3). If necessary, local devices can also be specified in the DNS static host
table (see
page
•
When using ping6 with a host name, the switch first attempts to resolve the alias into
an IPv6 address before trying to resolve it into an IPv4 address.
Example
SSE-G2252#ping6 FE80::2E0:CFF:FE00:FC%1/64
Type ESC to abort.
PING to FE80::2E0:CFF:FE00:FC%1/64, by 5 32-byte payload ICMP packets,
timeout is 3 seconds
response time: 20 ms
response time: 0 ms
response time: 0 ms
response time: 0 ms
response time: 0 ms
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
SSE-G2252#
clear ipv6 neighbors
This command deletes all dynamic entries in the IPv6 neighbor discovery cache.
Command Mode
Privileged Exec
Example
The following deletes all dynamic entries in the IPv6 neighbor cache:
SSE-G2252#clear ipv6 neighbors
SSE-G2252#
40-5).
[FE80::2E0:CFF:FE00:FC] seq_no: 1
[FE80::2E0:CFF:FE00:FC] seq_no: 2
[FE80::2E0:CFF:FE00:FC] seq_no: 3
[FE80::2E0:CFF:FE00:FC] seq_no: 4
[FE80::2E0:CFF:FE00:FC] seq_no: 5
42-29
Chapter 42: IP Interface Commands