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TalkTalk and DSCP and 19 second latency: Difference between revisions

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autoreview, Bureaucrats, editor, Interface administrators, reviewer, Administrators
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AA-Andrew (talk | contribs)
autoreview, Bureaucrats, editor, Interface administrators, reviewer, Administrators
12,629 edits
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* Setting a special feature on AAISP and the FireBrick - ''''IP over LCP'''' - this sends the IP traffic as control frames. (high latency goes away). This IPoLCP is a niche feature and has been used in the past to help diagnose problems in back-haul networks: eg: https://www.revk.uk/2015/02/congestion-case-study.html
* Setting a special feature on AAISP and the FireBrick - ''''IP over LCP'''' - this sends the IP traffic as control frames. (high latency goes away). This IPoLCP is a niche feature and has been used in the past to help diagnose problems in back-haul networks: eg: https://www.revk.uk/2015/02/congestion-case-study.html
* '''Changing the DSCP value''' - only packets marked CS6 (192 to 195) are affected. Using values higher or lower and the latency goes away
* '''Changing the DSCP value''' - only packets marked CS6 (192 to 195) are affected. Using values higher or lower and the latency goes away
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*'''Getting the FireBrick 2900 to set the DSCP field to 0''' - this feature was added to the alpha release of FireBrick software on 8th December 2021


=== Things that were not tried ===
=== Things that were not tried ===
*Migrating the line to BT back-haul - this would have fixed the problem for the customer, but would not have fixed the problem in the TalkTalk network or the Aruba access point. Being engineers - we like to fix problems!
*Migrating the line to BT back-haul - this would have fixed the problem for the customer, but would not have fixed the problem in the TalkTalk network or the Aruba access point. Being engineers - we like to fix problems!
*Changing the DSCP setting on the Aruba Instant-On Access Points - there is no setting, the DSCP field is being set automatically.
*Changing the DSCP setting on the Aruba Instant-On Access Points - there is no setting, the DSCP field is being set automatically.

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*Getting the FireBrick 2900 to strip the DSCP field - this feature hasn't been added to the FireBrick. ...yet.


== Further tests ==
== Further tests ==
Retrieved from "http://support.aa.net.uk/TalkTalk_and_DSCP_and_19_second_latency"