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4 Replies Last post: Mar 8, 2010 8:38 PM by mark  
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mark
4 posts since
Mar 7, 2010

Mar 7, 2010 9:38 PM

OSBC Configuration for 2 NICs


Hi all,

I am very interested in OpenSBC and I have done some testing. However, due to the document limitation, it is hard to configure OpenSBC for some testing.

In my recent test, what I want to acheve from OSBC is simple:
1. Install it on an ubuntu server with 2 NICs; which means OSBC has two network cards, one is public and one is private, which connect to my SIP server.
2. Configure OSBC and with the help of it, the SIP message and media traffic can be sent and received by two call parties, which located in different LANs.

I hope that someone has successfully achieved this and could you please share it with us? I think this feature is very important and without it, OSBC can not be call Session Border Controller.

I have viewd the OpenSBC manual and many posts in this BBS. And the following is the current configuration that my OSBC used. With this configuration, the upper registration procedure works well. However, in the call procedure, the called party can NOT receive the INVITE message. The reason may be that OpenSBC use the wrong interface (it has two) to send this message. Hope someone can give me hand.

[OpenSBC-General-Parameters]
SIP-Log-Level=5
PTRACE-Log-Level=5
Log-File-Prefix=b2bua
SBC-Application-Mode=B2BUpperReg Mode
Enable-Trunk-Port=True
Enable-Calea-Port=True
RTP-Min-Port=30000
RTP-Max-Port=35000
NAT-Keep-Alive-Interval=15
Send-OPTIONS-NAT-Keep-Alive=False
Send-Responses-Using-New-Socket=False
Enable-Local-Refer=True
Disable-Refer-Optimization=False
Max-Forwards=70
Encryption-Mode=XOR
Encryption-Key=GS
Alerting-Timeout=30000
Seize-Timeout=60000
SIP-Timer-B=Default
SIP-Timer-H=Default
Session-Keep-Alive=1800
Session-Max-Life-Span=10800
Max-Concurrent-Session=100
Max-Call-Rate-Per-Second=10

[SIP-Transports]
Main-Interface-Address Array Size=2
Main-Interface-Address 1=sip:192.168.0.10:5060
Main-Interface-Address 2=sip:202.204.0.12:5060
Backdoor-Interface-Address=sip:192.168.0.10:5062
Trunk-Interface-Address=sip:*:5064
Media-Server-Interface-Address=sip:*:5066
CALEA-Interface-Address=sip:*:5068
Auxiliary-Interface-Address=sip:*:5070
Interface-Route-List Array Size=1
*Interface-Route-List 1=[sip: 202.204.0.]sip:192.168.0.10;external=202.204.0.12

[B2BUA-Routes]
Route-List Array Size=1
*Route-List 1=[sip:]sip:192.168.0.11:5060
Insert-Route-Header=True
Rewrite-TO-URI=False
Prepend-ISUP-OLI=False
Route-By-Request-URI=True
Route-By-To-URI=False
Drop-Routes-On-Ping-Timeout=False
Use-External-XML=False
External-XML-File=b2bua-route.xml

[Upper-Registration]
All-Reg-As-Upper-Reg=True
Enable-Stateful-Reg=False
Rewrite-TO-Domain=False
Rewrite-FROM-Domain=False
Route-List Array Size=1
*Route-List 1=[sip:]sip:192.168.0.11:5060

Thank you for your reading and look forward to your comments!

Brs,

mark

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mark
4 posts since
Mar 7, 2010
1. Mar 7, 2010 9:47 PM in response to: mark
Re: OSBC Configuration for 2 NICs

OpenSBC has two interfaces:

sip:192.168.0.10:5060
sip:202.204.0.12:5060

My SIP server is: sip:192.168.0.11:5060

Route-List 1=[sip:]sip:192.168.0.11:5060, this route indicates that all the messages received by OpenSBC should be sent to my SIP server, mainly including REGISTER and INVITE.

Interface-Route-List 1=[sip: 202.204.0.]sip:192.168.0.10;external=202.204.0.12, this is configuration is what I learned from other posts. I don't know its correction.
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joegen
519 posts since
Apr 28, 2007
2. Mar 8, 2010 3:43 AM in response to: mark
Re: OSBC Configuration for 2 NICs
get rid of the external paramater in the interface-route-list. That is used if your SBC is installed behind a firewall with one to one port mapping. Actually, in theory you dont even need an interface-route-list parameter.
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mark
4 posts since
Mar 7, 2010
3. Mar 8, 2010 7:56 AM in response to: joegen
Re: OSBC Configuration for 2 NICs

Thank you joegen!

After I delete the "external" parameter, the test result is still not good; then I delete the whole interface route list and test again, the result still shows that the INVITE can not be received by the called party.

From the log file, I found these two lines is wired: the route is wrong and OSBC use the private interface send out the outbound message.

2010/03/08 20:46:57.901 INF: [CID=0x4e67c6a7] *** IPROUTE2 INFO *** dev=eth1 iface=123.127.237.90 route=*127.0.0.1* dest=123.127.237.39
2010/03/08 20:46:57.901 PWL: [CID=0x00000000] Using Iface: 172.16.0.130 to send to Dest: 123.127.237.39

mark
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mark
4 posts since
Mar 7, 2010
4. Mar 8, 2010 8:38 PM in response to: joegen
Re: OSBC Configuration for 2 NICs

I have viewed a very good post: OpenSBC Two Nics Scenario [ http://www.opensourcesip.org:8080/clearspacex/message/9455#9455 ]

Joegen has updated the source code a lot since then and solved some issues.

And dablackgreek said "In SIP Transports you have to list your Public Interface first to get it to register " and he has successfully made OSBC work well with two NICs.

Below is his post: ------------------------------------------------->>(I used this configuration and still suffer some issues)

Ok All. I finally got my OSBC with TWO NICS to Work

My working config is below...

Pay close attention you must declare your Interfaces in the SIP Transports and also look at the Route List in SIP Transports.

FYI: I am running OpenSBC in front of Asterisk

OpenSBC WAN IP: w.x.y.188
OpenSBC LAN IP: 192.168.1.150

Asterisk IP: 192.168.1.250

If you have questions i am actively on this board

[Solegy]
RTTS-Client-Address=192.168.1.150

[OpenSBC-General-Parameters]
SIP-Log-Level=5
PTRACE-Log-Level=1
Log-File-Prefix=opensbc
User-Agent-Name=SBC
SBC-Application-Mode=B2BUpperReg Mode
Interface-Address Array Size=0
Enable-Backdoor-Port=True
Enable-Trunk-Port=False
Enable-Calea-Port=False
Static-RTP-Media-Address=
RTP-Min-Port=30001
RTP-Max-Port=40000
Send-Responses-Using-New-Socket=True
Enable-Local-Refer=False
Max-Forwards=70
Encryption-Mode=XOR
Encryption-Key=GS
Transaction-Thread-Count=10
Session-Thread-Count=10
Alerting-Timeout=30000
Seize-Timeout=60000
SIP-Timer-B=Default
SIP-Timer-H=Default
Session-Keep-Alive=1800
Session-Max-Life-Span=10800
Max-Concurrent-Session=100
Max-Call-Rate-Per-Second=10
Interface-Address 1=sip:192.168.1.150:5060

[Upper-Registration]
All-Reg-As-Upper-Reg=True
Enable-Stateful-Reg=False
Rewrite-TO-Domain=True
Rewrite-FROM-Domain=True
Route-List Array Size=1
Route-List 1=[sip:*@sip.mydomain.net] sip:192.168.1.250;domain=sip.mydomain.com

[Internal-DNS-Mapping]
Internal-DNS-Map Array Size=0

[RTP-Proxy]
Proxy-On-Private-Contact=True
Proxy-On-via-received-vs-signaling-address=True
Proxy-On-Private-Via=True
Proxy-On-Different-RPORT=True
Proxy-All-Media=True

[Media-Server]
Enable-Media-Server=False
Media-Server-Number=5000
Codec-List Array Size=0
No-RTP-Proxy-On-All-Transfers=False
Enable-Announcement-Service=False
4xx-Error-Map=prompts/basic/cant_complete.wav
5xx-Error-Map=prompts/basic/cant_complete.wav
6xx-Error-Map=prompts/basic/cant_complete.wav
Announcement-Error-Map Array Size=0

[B2BUA-Routes]
Enable-Route-Scripting=False
Route-Script=b2bua-route.cscript
Route-List Array Size=1
Route-List 1=[sip:*@sip.mydomain.net] sip:192.168.1.250
Catch-All-Route=
Insert-Route-Header=True
Rewrite-TO-URI=True
Rewrite-From-Domain=
Prepend-ISUP-OLI=False
Route-By-Request-URI=True
Route-By-To-URI=False
Drop-Routes-On-Ping-Timeout=False
Use-External-XML=False
External-XML-File=b2bua-route.xml

[Local-Domain-Accounts]
Accept-All-Registration=True
Account-List Array Size=0

[Trusted-Domains]
Accept-All-Calls=True
Trusted-Domain-List Array Size=0

[Privacy-RFC-3325]
Default-Realm=
Trusted-Domain-List Array Size=0

[SIP-Transports]
Main-Interface-Address Array Size=2
Backdoor-Interface-Address=sip:*:5062
Trunk-Interface-Address=sip:*:5064
Media-Server-Interface-Address=sip:*:5066
CALEA-Interface-Address=sip:*:5068
Auxiliary-Interface-Address=sip:*:5070
Interface-Route-List Array Size=2
Interface-Route-List 1=[sip:192.168.1.*] sip:192.168.1.150
Main-Interface-Address 1=sip:192.168.1.150:5060
Main-Interface-Address 2=sip:w.x.y.188:5060
Interface-Route-List 2=[sip:w.x.y.*] sip:192.168.1.150;external=w.x.y.188

------------------------------------------------------->>

mark

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