By static assignment, each tunnel has an ETX value of 0.1.
By static assignment, each microwave link has an ETX value of 1 or
higher of LQ/NLQ<100%.
Tunnels will win the ETX race 99.99% of the time.
Latency can cause video glitches or audio drop-outs.
Let's take a look at latency on the network.
Here is an example traceroute test between
nc8q-services and wa8apb-services:
With the tunnel enabled between nc8q and (w8go and wx8a)
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte
packets
1 dtdlink.NC8Q-hAP.local.mesh (10.218.93.193) 0.266 ms 0.224 ms
0.157 ms
2 mid1.w8go-Hub-hAP (172.31.187.169) 13.620 ms 16.492 ms 14.020
ms <- this path thought a hop to Clinton County then to
Huber Heights is best
3 mid1.W8BI-DARA-Services (172.31.114.241) 23.931 ms 28.659 ms
25.986 ms
4 dtdlink.KE8MVM-DARA-TO-XWARN.local.mesh (10.91.93.77) 42.054
ms 24.208 ms 22.870 ms
5 KE8MVM-XWARN-To-DARA.local.mesh (10.74.117.225) 24.205 ms
23.605 ms 23.369 ms
6 dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh
(10.74.61.92) 32.224 ms 24.093 ms 33.534 ms
7 WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187) 36.136 ms
29.008 ms 25.973 ms
8 WA8APB-Services.local.mesh (10.104.249.244) 26.898 ms 32.901
ms 28.151 ms <- average latency
Let's drop the tunnel; nc8q to w8go:
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte
packets
1 dtdlink.NC8Q-hAP.local.mesh (10.218.93.193) 0.700 ms 0.158 ms
0.156 ms
2 mid1.WX8A-QTH-hAP (172.31.187.165) 42.323 ms 24.866 ms 22.401
ms <- this path picked up the WX8A tunnel.
Clinton<>Clinton<>Huber Heights
3 mid4.w8go-Hub-hAP (172.31.114.226) 40.410 ms 34.164 ms 32.631
ms
4 mid1.W8BI-DARA-Services (172.31.114.241) 41.129 ms 55.015 ms
41.616 ms
5 dtdlink.KE8MVM-DARA-TO-XWARN.local.mesh (10.91.93.77) 41.819
ms 43.693 ms 40.805 ms
6 KE8MVM-XWARN-To-DARA.local.mesh (10.74.117.225) 48.688 ms
44.074 ms 44.434 ms
7 dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh
(10.74.61.92) 42.077 ms 42.370 ms 58.287 ms
8 WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187) 53.594 ms
50.565 ms 45.683 ms
9 WA8APB-Services.local.mesh (10.104.249.244) 47.334 ms 50.463
ms 51.410 ms <- average latency
Let's drop both tunnels; w8go and wx8a:
root@NC8Q-SERVICES:~# traceroute wa8apb-services
traceroute to wa8apb-services (10.104.249.244), 30 hops max, 38 byte
packets
1 dtdlink.NC8Q-Kettering-Centerville.local.mesh (10.132.89.57)
0.305 ms 0.378 ms 0.335 ms
2 NC8Q-Centerville-Kettering.local.mesh (10.110.156.47) 1.744 ms
1.635 ms 1.550 ms
3 dtdlink.KE8MVM-LHG-MVHS-XeniaNorth.local.mesh (10.253.119.123)
1.792 ms 9.628 ms 1.884 ms
4 KE8MVM-LHG-XeniaNorth-MVHS.local.mesh (10.252.120.191) 3.251
ms 3.202 ms 3.014 ms
5 dtdlink.WA8APB-LHG-At-XeniaNorth-to-APB.local.mesh
(10.74.61.92) 3.442 ms 3.438 ms 3.321 ms
6 WA8APB-LHG-To-XeniaNorth.local.mesh (10.85.6.187) 5.675 ms
4.690 ms 5.069 ms
7 WA8APB-Services.local.mesh (10.104.249.244) 5.021 ms 4.939 ms
5.022 ms <- average latency with no tunnels
root@NC8Q-SERVICES:~#
What services do you wish to access on the local network?
73, Chuck