Strange ping replay

Unanswered Question

Hello guys,

I am getting very strange ping replay exactly : !.!.! A port on 2960 Switch is connected to voice board (PBX). When I ping the PBX from the switch I am getting the replay above, but I dont have any problem with the network connectivity. Is this an issue with Duplex settings on the switch port?? The switchport is configured on 100 Mb and Full duplex. Thank you in advance.



I have this problem too.
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mheusing Thu, 10/16/2008 - 07:50


Can you send more packets with the ping? If the pattern remains !.!.!. then a first guess would be that there are two pathes where one path works and the second does not.

Packets can be lost while sending echo request or while waiting for an answer (echo reply).

Without a more detailed knowledge about the exact topology unfortunately an answer is close to impossible.



Hello again,

Here is the output from ping command:


Protocol [ip]:

Target IP address: 192.x.x.x

Repeat count [5]: 20

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 20, 100-byte ICMP Echos to 192.x.x.x, timeout is 2 seconds:


Success rate is 50 percent (10/20), round-trip min/avg/max = 1/1/1 ms

What else would you like to know to be able to give me more specific answer. Thank you.


glen.grant Thu, 10/16/2008 - 08:04

We saw this type thing when going to a an Avaya PBX and its an issue on the Avaya side . I would also check that speed and duplex settings match exactly on both sides though.


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