Solved: RTT Round trip time ?

Rajesh cisco · ‎08-06-2014

Hi team,

Have few doubts on round trip time of PING utility.

Actually am not sure how RTT is calculated. i mean min/avg/max values. is there any algorithm available ? please share if any RFC available ?

i know RTT is delay between source and destination ack. i am not sure how MIN/AVG/MAX calculated.

please help me on this.

thanks,

Rajesh kumar V

anthpete · ‎09-02-2014

According to the Networking Working Group, It speaks of RTT or more specifically called the TCP Retransmission Timer as a RFC filed under RFC 2988.

I will post the link for the RFC, and as far as algorithms and calculations go, I would refer to Page 1, Section 2 of the RFC page the gives the basic algorithm. Note that this article also mentions the use of SRTT( Smoothed Round Trip Time) and RTTVAR( Round Trip Time Variation)

http://www.hjp.at/doc/rfc/rfc2988.txt

View solution in original post

anthpete · ‎09-02-2014

According to the Networking Working Group, It speaks of RTT or more specifically called the TCP Retransmission Timer as a RFC filed under RFC 2988.

I will post the link for the RFC, and as far as algorithms and calculations go, I would refer to Page 1, Section 2 of the RFC page the gives the basic algorithm. Note that this article also mentions the use of SRTT( Smoothed Round Trip Time) and RTTVAR( Round Trip Time Variation)

http://www.hjp.at/doc/rfc/rfc2988.txt