I just wanted to add, the "few more ms delay" - is actually more like the following:


---


root@OpenWrt:~# ping 44.1.1.44 -I wan -c 4
PING 44.1.1.44 (44.1.1.44): 56 data bytes
64 bytes from 44.1.1.44: seq=0 ttl=54 time=80.774 ms
64 bytes from 44.1.1.44: seq=1 ttl=54 time=80.527 ms
64 bytes from 44.1.1.44: seq=2 ttl=54 time=80.781 ms
64 bytes from 44.1.1.44: seq=3 ttl=54 time=80.752 ms

--- 44.1.1.44 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 80.527/80.708/80.781 ms

root@OpenWrt:~# ping 44.1.1.44 -I tunl0 -c 4
PING 44.1.1.44 (44.1.1.44): 56 data bytes
64 bytes from 44.1.1.44: seq=0 ttl=50 time=200.975 ms
64 bytes from 44.1.1.44: seq=1 ttl=50 time=200.664 ms
64 bytes from 44.1.1.44: seq=2 ttl=50 time=200.784 ms
64 bytes from 44.1.1.44: seq=3 ttl=50 time=200.830 ms

--- 44.1.1.44 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 200.664/200.813/200.975 ms


---


I wouldn't consider that just "a few more". This is just Ping and doesn't consider time in protocols where there's also the additional trip from the server to the user.



- KB3VWG


On Friday, May 10, 2024 at 09:43:33 PM EDT, Mark Herson, N2MH via 44net <44net@mailman.ampr.org> wrote:


On 5/10/24 07:26, Chris via 44net wrote:

>> So instead of me leaving MDC and my packet hopping a trans-Atlantic
>> fiber cable to you, it makes a round trip to California first before
>> doing so.
>
> I don't understand why this is a problem - a few more ms delay on a
> reliable fibre network will not adversely affect DNS lookups.

This may not be entirely true for streaming services, especially voip
telephony. While a phone or its server is looking up a host name in DNS,
there will likely be no audio heard on the connection. The connection
will appear to have gone dead or have a momentary dropout until the DNS
responds. And, the longer the delay in getting that DNS response, the
longer will be that dropout period of time.

For streaming video, you will get no dropout, but you will see a frame
freeze.

For typical tcp services, such as web, there will be a slightly longer
response time when changing pages. Of course, smtp will not show anything.

73, Mark, N2MH



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