[Devel] [ openser-Feature Requests-1696125 ] LCR Gateway Priority

[SourceForge.net]

Feature Requests item #1696125, was opened at 2007-04-07 11:08
Message generated for change (Comment added) made by lylethaut
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=743023&aid=1696125&group_id=139143

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: modules
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: LyleThaut (lylethaut)
Assigned to: Nobody/Anonymous (nobody)
Summary: LCR Gateway Priority

Initial Comment:
With the current LCR module (1.2.0) we have the ability to send prefixes to a certain group of gateways with the specified group id and priority field in the lcr table. 

I have the need to prioritize the gateways within a gateway group. Right now if you have 3 gateways in a group, your traffic will get sent to one of the gateways in a random fashion. I want to be able to choose which of the gateways out of the group gets used.  

Scenario as follows:  
My SIP peer has 3 gateways that that I can send traffic to.  However, they prefer that I send traffic to their primary gateway and only use the other two if the first one fails.

Seems like this can be accomplished by adding a priority field in the gateways table so we can choose which server within a group to send traffic to.

----------------------------------------------------------------------

>Comment By: LyleThaut (lylethaut)
Date: 2007-04-07 20:34

Message:
Logged In: YES 
user_id=1763646
Originator: YES

My concern is to not make the lcr table unnecessarily large.  Take my
example above and multiply it times 5 or 6 sip providers and you can easily
have over a million rows in the lcr table.  I believe that the solution
offered by osas would create more duplication than desired in the lcr
table.  For three sip providers and one prefix you need 9 entries in the
lcr table.

With priority field only in the lcr table (9 lcr table rows):
SIP provider A:
group 1 - prefix 222 - priority 0
group 2 - prefix 222 - priority 1
group 2 - prefix 222 - priority 1
Group 1 has primary gateway for this provider, group 2 has secondary
gateway(s).

SIP provider B:
group 3 - prefix 222 - priority 2
group 4 - prefix 222 - priority 3
group 4 - prefix 222 - priority 3
Group 3 has primary gateway for this provider, group 4 has secondary
gateway(s).

SIP provider C:
group 5 - prefix 222 - priority 4
group 6 - prefix 222 - priority 5
group 6 - prefix 222 - priority 5
Group 5 has primary gateway for this provider, group 6 has secondary
gateway(s).

With proposed gateway_priority field in gw table (3 lcr table rows):
SIP provider A:
group 1 - prefix 222 - priority 0
Group 1 can have any number of gateways prioritized as necessary

SIP provider B:
group 2 - prefix 222 - priority 1
Group 2 can have any number of gateways prioritized as necessary

SIP provider C:
group 3 - prefix 222 - priority 2
Group 3 can have any number of gateways prioritized as necessary

Ultimately I believe that having a priority field in the gw table would
give users more granular control over how to route traffic with LCR with
less overhead.

----------------------------------------------------------------------

Comment By: Ovidiu Sas (osas)
Date: 2007-04-07 11:44

Message:
Logged In: YES 
user_id=1395524
Originator: NO

You can achieve that by using the priority field in the lcr table.

Put the primary gateway into the primary_group.
Put the other two gateways into the secondary_group.

In the lcr table add two entries for the same prefix/from_uri:
 - primary_group with priority 0
 - secondary_group with priority 1

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=743023&aid=1696125&group_id=139143