CCIE Pursuit Blog

June 6, 2008

IPv6 Ping Test Characters

Filed under: Cisco,Cisco Certification,IOS,IPv6 — cciepursuit @ 12:45 pm
Tags: , ,

I recently posted about a strange ping return character:

r5(config-if)#do p 2001:173:1:57::7

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:173:1:57::7, timeout is 2 seconds:
HHHHH
Success rate is 0 percent (0/5)

Props to Geoff for pointing out that this is an IPv6 PING Character:

ping ipv6

Table 41 ping Test Characters (IPv6) 

!

Each exclamation point indicates receipt of a reply.

.

Each period indicates that the network server timed out while waiting for a reply.

?

Unknown error.

@

Unreachable for unknown reason.

A

Administratively unreachable. Usually, this output indicates that an access list is blocking traffic.

B

Packet too big.

H

Host unreachable.

N

Network unreachable (beyond scope).

P

Port unreachable.

R

Parameter problem.

T

Time exceeded.

U

No route to host.

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