21 Jul
2019
21 Jul
'19
4:38 a.m.
As far as we are thinking about possible evolutions,
we can also add new
criteria. Ability to change link "weight" according to link quality (or
other parameters) may be an intesring thing.
Well, as soon as something is changed in the protocol you lose the big advantage of
running standard protocols available in standard firmware, see the AMPR RIP thing.
I don't know if BGP has some "weight"
parameter. OSPF has. It can not
change the weight dynamically, but it's possible to change that weight
by an external script. That's nice, and that's the reason why we choose
OSPF for our "internal" network.
I have considered doing similar things in BGP (adjusting prepend or local-pref
dynamically based on SNMP monitoring of the link).
We have not experimented with OSPF yet, I read in many places that it has problems
with scaling when the CPU power on routers is limited (like on old RB750s)
Rob
21 Jul
21 Jul
5:46 a.m.
New subject: Time to restructure the network?
Well, as soon as something is changed in the protocol
you lose the big advantage of
running standard protocols available in standard firmware, see the AMPR RIP thing.
Not changing the protocol, but finding the right protocol that can
accomodate with link quality and weight.
I have considered doing similar things in BGP
(adjusting prepend or local-pref
dynamically based on SNMP monitoring of the link).
We have not experimented with OSPF yet, I read in many places that it has problems
with scaling when the CPU power on routers is limited (like on old RB750s)
I don't know Mikrotik. We are using OpenWRT, mostly on TP-Link or
GL-Inet cheap routers. The border routers are Debian VMs, with
potentially unlimited CPU. And my OSPF network does not have a size
which can disturb a CPU, even on a $20 hardware :-)
This is an interesing purpose, anyway. Maybe it's better to keep two
separate routing policies :
- one protocol for external/internet, which should be BGP
- another protocol for internal routing, which can be GBP, or something
else
But this only applies for networks build around a regional/local
gateway. For a standalone endpoint (such as current IP-IP user), there's
no distinction between "internal" and "external" routing, there's
only
one routing policy.
Then, the question becomes :
- Is it better to keep full mesh / standalone endpoints (such as current
IP-IP) ? But if so, how to handle Plug and Play and NAT traversal ?
- Or is it better to have small local gateways managed by skilled teams,
and end-users connecting to those gateways with simpler PnP VPN systems ?
We choosed the second option, with fully home-made design (OpenWRT,
OpenVPN, OSPF), because it best suited our needs, and because we are an
island, with few inter-connects with the rest of the world.
It seems lots of people in the world are using similar designs, with a
central gateway and enpoints connecting to it via VPNs. Maybe we just
have to share our experiences, and adopt some kind of "standardized"
rules for our gateways ?
73 de TK1BI
5:56 a.m.
New subject: Time to restructure the network?
On 21/07/19 19:46, Toussaint OTTAVI via 44Net wrote:
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
You (and some others) are sending blank messages to the list. Suggest
you use plain text.
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
6:01 a.m.
New subject: Time to restructure the network?
I saw that. Messages are readable on Android, but appears blank in Thunderbird. When we
answer, the answer remains blank (but the text is readable in the message source)
Will check...
Envoyé depuis mon smartphone Samsung Galaxy.
Envoyé depuis mon smartphone Samsung Galaxy.
-------- Message d'origine --------
De : Tony Langdon via 44Net <44net(a)mailman.ampr.org>
Date : 21/07/2019 11:57 (GMT+01:00)
À : 44net(a)mailman.ampr.org
Cc : Tony Langdon <vk3jed(a)vkradio.com>
Objet : Re: [44net] Time to restructure the network?
On 21/07/19 19:46, Toussaint OTTAVI via 44Net wrote:
_________________________________________
44Net mailing list
44Net(a)mailman.ampr.org
https://mailman.ampr.org/mailman/listinfo/44net
You (and some others) are sending blank messages to the list. Suggest
you use plain text.
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
6:10 a.m.
New subject: Time to restructure the network?
Greetings Toussaint et al.
I'm seeing exactly the same,
Android vs Thunderbird on W8.1
Best regards.
Tom - SP2L
7:31 a.m.
New subject: Time to restructure the network?
Le 21/07/2019 à 11:56, Tony Langdon via 44Net a écrit :
You (and some others) are sending blank messages to
the list. Suggest
you use plain text.
Funny, even your answer was blank text on Thunderbird. I had to get the
text in the message source.
I switched my Thunderbird to plain text (I thought it was already set,
but it was not).
Let's see if this text is readable. And sorry for the inconvenience.
7:39 a.m.
New subject: Time to restructure the network?
On 21/07/19 21:31, Toussaint OTTAVI via 44Net wrote:
Le 21/07/2019 à 11:56, Tony Langdon via 44Net a écrit :
Loud and
clear now. :)
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
You (and some others) are sending blank messages
to the list. Suggest
you use plain text.
Funny, even your answer was blank text on Thunderbird. I had to get
the text in the message source.
I switched my Thunderbird to plain text (I thought it was already set,
but it was not).
Let's see if this text is readable. And sorry for the inconvenience. 
10:11 a.m.
New subject: Time to restructure the network?
Actually, Tony, this appears to be a mailing list problem. The text
they are sending is in an included subpart, but it's being presented
in the wrong order by the relaying software. It's there, but you have
to dig for it.
While I'm troubleshooting this and trying to adjust the mailman software
to stop relaying almost-blank messages, if the posters will turn off their
plain-and-html dual posting options and, as you say, use plaintext only,
the messages will come through plainly.
- Brian
On Sun, Jul 21, 2019 at 07:56:17PM +1000, Tony Langdon via 44Net wrote:
On 21/07/19 19:46, Toussaint OTTAVI via 44Net wrote:
You (and some others) are sending blank messages to the list. Suggest
you use plain text.
--
73 de Tony VK3JED/VK3IRL
http://vkradio.com
1764
days inactive
1764
days old
7 comments
5 participants
participants (5)
-
Brian Kantor -
Rob Janssen -
SP2L -
Tony Langdon -
Toussaint OTTAVI