# Revision history [back]

### How does Wireshark plot missing tcp.analysis.ack_rtt values?

Hi all, I am just wondering how Wireshark plots tcp.analysis.ack_rtt values for the RTT graph when they don't appear to be in the column. I have attached an image of the Wireshark plot and my own plot, you can see when I am plotting there appears to be information missing which I have got from the Wireshark tcp.analysis.ack_rtt column. Could this be something to do with the ERTT where the ERTT = ((1-Alpha)*Current RTT)+(Alpha * next measured RTT) https://imgur.com/a/kmuGule

Any help would be much appreciated

### How does Wireshark plot missing tcp.analysis.ack_rtt values?

Hi all, I am just wondering how Wireshark plots tcp.analysis.ack_rtt values for the RTT graph when they don't appear to be in the column. I have attached an image of the Wireshark plot and my own plot, you can see when I am plotting there appears to be information missing which I have got from the Wireshark tcp.analysis.ack_rtt column. Could this be something to do with the ERTT where the ERTT = ((1-Alpha)*Current RTT)+(Alpha * next measured RTT) https://imgur.com/a/kmuGule

Any help would be much appreciated

### How does Wireshark plot missing tcp.analysis.ack_rtt values?

Hi all, I am just wondering how Wireshark plots tcp.analysis.ack_rtt values for the RTT graph when they don't appear to be in the column. I have attached an image of the Wireshark plot and my own plot, you can see when I am plotting there appears to be information missing which I have got from the Wireshark tcp.analysis.ack_rtt column. Could this be something to do with the ERTT where the ERTT = ((1-Alpha)*Current RTT)+(Alpha * next measured RTT) https://imgur.com/a/kmuGule

Any help would be much appreciated

 4 None grahamb 23665 ●4 ●878 ●227 https://www.wireshark.org

### How does Wireshark plot missing tcp.analysis.ack_rtt values?

Hi all, all,

I am just wondering how Wireshark plots tcp.analysis.ack_rtt values for the RTT graph when they don't appear to be in the column. column.

I have attached an image of the Wireshark plot and my own plot, you can see when I am plotting there appears to be information missing which I have got from the Wireshark tcp.analysis.ack_rtt column. Could this be something to do with the ERTT where the ERTT = ((1-Alpha)*Current RTT)+(Alpha * next measured RTT) RTT)?

https://imgur.com/a/kmuGule

Any help would be much appreciated

 5 None cmaynard 11021 ●10 ●285 ●165 https://www.igt.com/

### How does Wireshark plot missing tcp.analysis.ack_rtt values?

Hi all,

I am just wondering how Wireshark plots tcp.analysis.ack_rtt values values for the RTT graph when they don't appear to be in the column.

I have attached an image of the Wireshark plot and my own plot, you can see when I am plotting there appears to be information missing which I have got from the Wireshark tcp.analysis.ack_rtt column. Could this be something to do with the ERTT ERTT where the ERTT = ((1-Alpha)*Current RTT)+(Alpha * next measured RTT)?RTT)?

https://imgur.com/a/kmuGule https://imgur.com/a/kmuGule

Wireshark plot:

My own plot:

Any help would be much appreciated