What is Citrix ADC TCP retransmit timeout (RTO) value
Article ID: CTX331269
Updated On:
Description
You may need to know Citrix ADC's TCP retransmit timeout (RTO) for troubleshooting retransmission issues.
Environment
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Resolution
Citrix ADC have minimum RTO setting in global TCP parameters and TCP profile .
The default RTO is 1s, which complies with RFC6298
For second retransmission of these packets RTO will be calculated by N*2 and then N*4 , 8*N. It goes on till last retransmission attempt.
The default RTO is 1s, which complies with RFC6298
For second retransmission of these packets RTO will be calculated by N*2 and then N*4 , 8*N. It goes on till last retransmission attempt.
Problem Cause
Citrix ADC is following RFC6298 for RTO calculation, RTO value is dynamically determined with RTT values.
Issue/Introduction
Citrix ADC dynamically calculate RTO on a TCP connection, with 1s as minimum RTO by default.
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