12 Nov
2020
12 Nov
'20
1:40 p.m.
I am with Marius on this.
Using a single point to route all the 44 net traffic by tunnel is good for small
communication that wont suffer from resend or such. But for a voice communication that
need to have a steady stream you are looking for trouble.
Of course it will work most of the time, But nope it wont work all the time.
Pierre
VE2PF
________________________________________
De : 44Net <44net-bounces+petem001=hotmail.com(a)mailman.ampr.org> de la part de
Marius Petrescu via 44Net <44net(a)mailman.ampr.org>
Envoyé : 12 novembre 2020 14:13
À : 44net(a)mailman.ampr.org
Cc : Marius Petrescu
Objet : Re: [44net] Lost Packets
This may sound blunt, but why do you need to run DMR traffic from/to the
internet via 44net if you don't have a BGP announced subnet?
Using your public IP for it (since you have a gateway, otherwise you
would not need ampr-gw) would actually circumvent all those problems
related to the gateway.
Also, your partners would experience a round trip time cut in half by
connecting directly to you or you connecting to them via public IP
instead of the client<->ampr-gw<->client option.
And if they also use 44net, then again the gateway should not matter,
since all tunnels are full mesh.
The AMPR tunneling system is for interlinking isolated subnets and the
gateway itself to provide management and occasional internet access, not
for providing high speed high performance routing, like those needed for
DV traffic.
Talking of sustainability, you use the gateway for something it was not
meant to support, not mentioning the contribution to clogging the
ampr-gw router itself.
Marius, YO2LOJ
On 12.11.2020 07:15, Albert Lawson via 44Net wrote:
Dan,
Please keep us posted on USCD's response. I'm experiencing a 30% packet loss to
the gateway tonight and that's not acceptable. I don't want to make waves or
cause trouble....but this is not sustainable. The packet loss started again tonight
around 5PM (PST) and has so far made a complete mess of two of our DMR nets.
73's
-Albert
WB7AWL
-----Original Message-----
From: 44Net [mailto:44net-bounces+wb7awl=lawsonpc.com@mailman.ampr.org] On Behalf Of
Daniel E Andersen via 44Net
Sent: Wednesday, November 11, 2020 9:06 PM
To: 44net(a)mailman.ampr.org
Cc: Daniel E Andersen <dea(a)caida.org>
Subject: Re: [44net] Lost Packets
On 11/11/20 8:00 AM, Paul Sladen via 44Net wrote:
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CAIDA/UCSD is beholden to random upstream
filtering as much in 2001[1]
and 2009[2] as it is now. And in-turn, AmprGW is/was beholden (2019)
to an ethernet switch with customised firmware[3]... a blackbox.
I can answer this part, at least. The make and model is a juniper ex3300-48t. It
is not running any customized firmware. Rather, the link drops down into a small vlan
grouping with the link from UCSD, a link to the ampr gw box, and a port replicator. For
whatever reason, when the ampr gw box reboots, there is a chance it takes the switch with
it. usually, the switch just reboots, but sometimes it full on crashes and needs a power
cycle.
It has been pretty stable recently, however.
Last flapped : 2019-10-18 01:34:48 PDT (55w5d 08:34 ago)
( on all three ports )
In other news, I'm still waiting to hear back from UCSD. Keep in mind it is a
holiday here, so it may be tomorrow.
Dan
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