Thanks.
FYI, the main reason we decided to use openSIPS is that is a lot more
documentation than other solutions.
Anyways, I have read lot of the books ("Building Telephony..2nd and 1.6"), some
of the website (modules, how to, ....); and the major missing things are:
1 - Need a "openSIPS CookBook of recipes" that has more route examples (e.g.
how to setup user authentication, how to do HA, security (drop ghost calls, ...), setup
to work with RTP proxies, ...)
2 - module documentation needs better details on how to pass in and pass out
values. For example, some modules do not expand variables, so it is really hard
to pass in values.
Robert Mundkowsky
-----Original Message-----
From: Devel [mailto:[email protected]] On Behalf Of
Bogdan-Andrei Iancu
Sent: Friday, June 16, 2017 10:47 AM
To: OpenSIPS users mailling list <[email protected]>
Cc: [email protected]; [email protected]; OpenSIPS devel mailling
list <[email protected]>
Subject: Re: [OpenSIPS-Devel] [OpenSIPS-Users] [Blog] Traffic balancing – load,
weights, round robin ??
Hi Robert,
All the time there is space for more :). This blog post is the first from a set
of docs trying to explain the routing with OpenSIPS.
Including some feedback from you, I can draft as following chapters:
1) how to insert a balancer in your SIP traffic - like dialog statefull
proxy, transaction statefull proxy, stateless proxy, etc....
2) routing modules in opensips, like dispatcher versus drouting versus
load-balancer..
In your classification, I noticed many missing features for Dynamic Routing:
- in memory matching with prefix-tree - O(prefix_len)
- has gui in Control Panel
- destination pinging, failover, re-enable
- clustering capabilities for the state of the GW/destinations
- rule fallback (on matching)
......
Again, any feedback is more the welcome as it will give us some ideas about the
hot topics from the user perspective.
Best regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
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OpenSIPS Bootcamp 2017, Houston, US
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On 06/15/2017 09:36 PM, Mundkowsky, Robert wrote:
This is helpful. But would like a little more details there. Such as:
1) openSIPS when it actions as a Load Balancer is always a SIP proxy during the
complete dialog. In other words, the caller RTP is direct connected backend
gateway, but openSIPS is always between them for the SIP traffic.
2) Some information for the traffic distributions modules is stored in
the database, but some info is only in memory (e.g. which gateway is
enabled, count of active dialogs)
This might be naïve details for most telecom folks, but helpful for naïve users
like myself.
I haven't played with "Carrier Route","Dispatcher", and "Dynamic Routing", but
similar notes for those would be helpful too.
The following video was very helpful in describing the different traffic
distributions modules openSIPS supports:
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.y
outube.com%2Fwatch%3Fv%3DyTLPs1-X0SM&data=02%7C01%7Crmundkowsky%40ets.
org%7Ccb9609d3270b4091081108d4b4c6c079%7C0ba6e9b760b34fae92f37e6ddd9e9
b65%7C0%7C0%7C636332213102517343&sdata=mDlSlzbtLQ%2FL3uDq67VkOa%2B8FPG
20nNx4AZ9duHVi1s%3D&reserved=0
Not sure if my notes are helpful, but they are below.
Routing modules:
Carrier Route
- old module and not maintained, but seems to work
- features: routing, load balancing, blacklisting
- not installed by default
- no web GUI
- performs longest prefix matching
- you use longest preefix to pull "least cost" route out of database
table
- strips prefix, adds prefix/suffix
- probabilities to load balancer
Load Balancer
- light weight
- balancing based on load
- can config via GUI
- single database table
- features:
- no prefix/suffix changing
- with version 1.8, you can keep counters in database
- docs:
Tutorial
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.op
ensips.org%2FDocumentation%2FTutorials-LoadBalancing-1-9&data=02%7C01%
7Crmundkowsky%40ets.org%7Ccb9609d3270b4091081108d4b4c6c079%7C0ba6e9b76
0b34fae92f37e6ddd9e9b65%7C0%7C0%7C636332213102517343&sdata=TpUc3EXNX1N
0lGf4UCuQsHBceQQYu%2FkdtGxOpYWe8MM%3D&reserved=0
DB schema:
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.o
pensips.org%2FDocumentation%2FInstall-DBSchema-2-2%23AEN6455&data=02%7
C01%7Crmundkowsky%40ets.org%7Ccb9609d3270b4091081108d4b4c6c079%7C0ba6e
9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636332213102517343&sdata=Huu9Utg
8OJhqcEB4Vu4MFrX507%2F5Eew0pbZONE83OHg%3D&reserved=0
module
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.op
ensips.org%2Fhtml%2Fdocs%2Fmodules%2F2.2.x%2Fload_balancer.html&data=0
2%7C01%7Crmundkowsky%40ets.org%7Ccb9609d3270b4091081108d4b4c6c079%7C0b
a6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636332213102517343&sdata=Cqj8
S8eWWRFku23mo7CBLVw1EFit2akpxnfZW6naxZo%3D&reserved=0
Dispatcher
- computes hash over parts of request and selects an address from the
destination list
- can config via GUI
- CallerID, From URI, To URI, Request URI
- via config file or databaseas
- does not strip or append prefix/suffix
- out of service destinations detected by probing
- can mark as out of service
- can mark as in service when gateway comes back online
Dynamic Routing
- heavy weight
- multiple criteria to determine route
- prefix, caller, group, time, priority
- databse only
4 tables (groups, rules, carriers, gateways)
- functions
- do_routing() uses all 4 tables
- route_to_carrier uses carriers & gateways tables
- route_to_gateway - uses gateways table
Robert Mundkowsky
-----Original Message-----
From: Devel [mailto:[email protected]] On Behalf Of
Bogdan-Andrei Iancu
Sent: Thursday, June 15, 2017 2:01 PM
To: [email protected]; developensips
<[email protected]>; [email protected];
[email protected]
Subject: [OpenSIPS-Devel] [Blog] Traffic balancing – load, weights, round robin
??
Many times, during discussion about various OpenSIPS based solutions, I noticed
that people make a confusion when comes to the meaning of “load balancing”.....
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fblog.
opensips.org%2F2017%2F06%2F15%2Ftraffic-balancing-load-weights-round-r
obin%2F&data=02%7C01%7Crmundkowsky%40ets.org%7Ce9218868262d4ce369ac08d
4b4189373%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636331465027654
678&sdata=0acaS2xE6vYbvzOIyBIJC48oMhOLKF7j3YqKnDp98nI%3D&reserved=0
Enjoy the reading :)
--
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
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ensips-solutions.com&data=02%7C01%7Crmundkowsky%40ets.org%7Ce921886826
2d4ce369ac08d4b4189373%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C63
6331465027664682&sdata=lUNkjOnT%2FEZ%2FR%2Fvr%2B9wyPoECMq3B%2FFwU4Ojzv
lwN7yY%3D&reserved=0
OpenSIPS Bootcamp 2017, Houston, US
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ps.org%2Ftraining%2FOpenSIPS_Bootcamp_2017.html&data=02%7C01%7Crmundko
wsky%40ets.org%7Ce9218868262d4ce369ac08d4b4189373%7C0ba6e9b760b34fae92
f37e6ddd9e9b65%7C0%7C0%7C636331465027664682&sdata=uT%2FNvQ3PfVFHXwSzRv
is9FUw08RP%2Fwa5Uz0cj6by1Ec%3D&reserved=0
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