Drops In Ping

[fb_webuser]

I have my Cisco IP Phone 192.168.195.241 connected to my router 192.168.195.246 with cisco switch in between, but I get drops at fixed regular intervals.

Sending 100, 100-byte ICMP Echos to 192.168.195.241, timeout is 2 seconds:

!!!!!.!!!!!!!!!!.!!!!!.!!!!!.!!!!!!!!!!.!!!!!.!!!!!.!!!!!!!!!!.!!!!!.!

!!!!.!!!!!!!!!!.!!!!!.!!!!!.!!

Success rate is 87 percent (87/100), round-trip min/avg/max = 1/1/4 ms

Please clarify.

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Posted by WebUser Vikas Mishra from Cisco Support Community App

[Seb Rupik]

Hi there,

What is the output from 'sh int gix/x' for the switchports which are used on the physical cable route from your phone to the router interface whcic you are pinging?

cheers,

Seb.

[John Blakley]

For Avaya phones, this is normal. There is a built-in DoS prevention mechanism to protect the phones. I'm assuming that it's the same with Cisco....You wouldn't get any drops pinging it from a PC because they're not sent as fast as they are from a router/switch.

HTH,
John

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[jawad-mukhtar]

R  u getting CRC or dup-lex mismatch errors.

Jawad