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Firmware 3.8.9.6 TLS issues on 2860n+

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27 Nov 2019 14:03 #95254 by admin3
Replied by admin3 on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+
Try reducing the MTU of WAN1 to a lower value like 1492, I've seen similar on a Vigor 2860 since updating to 3.8.9.6 but I thought it was an ISP issue. It's definitely worth contacting support to look into this further.

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27 Nov 2019 16:44 #95255 by wytechpw
Replied by wytechpw on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+
Vdsl on plusnet, struggled getting webpages so reinstalled 3.8.8.5bt now ok again

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29 Nov 2019 08:10 #95266 by rusbrc
Replied by rusbrc on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+

admin3 wrote:
Try reducing the MTU of WAN1 to a lower value like 1492, I've seen similar on a Vigor 2860 since updating to 3.8.9.6 but I thought it was an ISP issue. It's definitely worth contacting support to look into this further.



Thanks, I'll try that, and see how it goes.

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29 Nov 2019 08:27 #95267 by rusbrc
Replied by rusbrc on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+

rusbrc wrote:

admin3 wrote:
Try reducing the MTU of WAN1 to a lower value like 1492, I've seen similar on a Vigor 2860 since updating to 3.8.9.6 but I thought it was an ISP issue. It's definitely worth contacting support to look into this further.



Thanks, I'll try that, and see how it goes.



This works! :P Thank you. It was 1520, reduced it to 1492 and flashed - normal connectivity restored.

I'll let support know - as an interesting data point.

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29 Nov 2019 08:38 #95268 by rusbrc
Replied by rusbrc on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+

arj wrote:
I've had the same problem with 3.8.9.6. Going back to 3.8.9.5 was the only way I could fix it too.



Wytechpw wrote:
Vdsl on plusnet, struggled getting webpages so reinstalled 3.8.8.5bt now ok again



So far setting the WAN MTU as suggested by admin3 to 1492 (mine was 1520) is a work-around for the connections issues - so worth a go.

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29 Nov 2019 14:07 #95272 by admin3
Replied by admin3 on topic Re: Firmware 3.8.9.6 TLS issues on 2860n+
Thanks for trying that, it's good to see that it resolved your issues as well. I'll pass this information on to the support team so that the next firmware release can work with VDSL and larger MTU values.

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