# SRT transmission between wowza servers **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [January 20, 2020, 9:52pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489 "2020-01-20T21:52:32Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 20, 2020, 9:52pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/1 "2020-01-20T21:52:32Z")
good afternoon. I currently have 2 wowza servers, and I need to stream video from one server to another via SRT. Server A is the one with the source video. Server B is the one who receives the transmission. Server A was configured according to: [https://www.wowza.com/docs/how-to-use-srt-to-distribute-live-streams](https://www.wowza.com/docs/how-to-use-srt-to-distribute-live-streams) Server B was configured as: [https://www.wowza.com/docs/ingest-and-publish-an-srt-stream-with-wowza-streaming-engine](https://www.wowza.com/docs/ingest-and-publish-an-srt-stream-with-wowza-streaming-engine) Despite following the mentioned links, it does not work. What is the default port used by Server A for SRT protocol? The configuration has something bad From Server A there is communication to B, and from B to A, it is checked by running PING on the network. CONFIGURATION SERVER A: [Imagen1](https://www.dropbox.com/s/4mdgbfj5nofgmqj/A.PNG?dl=0) [imagen2](https://www.dropbox.com/s/mxu86rsul2p5g99/A2.PNG?dl=0) [Imagen3](https://www.dropbox.com/s/1ar2rjkryeve5ir/A3.PNG?dl=0) CONFIGURATION SERVER B: [Imagen1](https://www.dropbox.com/s/4mdgbfj5nofgmqj/A.PNG?dl=0) [Imagen2](https://www.dropbox.com/s/j9t2husceb9q486/B2.PNG?dl=0) [Imagen3](https://www.dropbox.com/s/cozbgmz33i84ecg/B3.PNG?dl=0) ---
**Author:** ![Amara\_Graham](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/amara_graham/32/381_2.png) [@Amara\_Graham](https://community.wowza.com/u/Amara_Graham)\ **Post date:** [January 20, 2020, 10:26pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/2 "2020-01-20T22:26:12Z")
Did you mean to post images of your configuration? They don’t seem to have come through the post. ---
**Author:** ![Amara\_Graham](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/amara_graham/32/381_2.png) [@Amara\_Graham](https://community.wowza.com/u/Amara_Graham)\ **Post date:** [January 20, 2020, 10:50pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/3 "2020-01-20T22:50:04Z")
Make sure you have matching ip and port specified in your .stream file on server B and your SRT stream target on server A. Also make sure you “connect” the SRT mediacaster on server B before starting the stream on server A (order matters!) If you are trying to use a passphrase, try without that first. Let me know if any of this works for you! ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 21, 2020, 2:49pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/4 "2020-01-21T14:49:14Z")
Attached image of the configuration of both servers. Cannot establish communication, servers have public IPs. I already tried it without a password, and the same thing happens. Server A (which transmits), has configured the IP and port (10000) of server B in Stream Target. Server B (which it receives), has a .stream, with URI rst://serverA:10000, See these images: How can server B listen to port 10000? ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 21, 2020, 5:59pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/5 "2020-01-21T17:59:37Z")
Please change…in server A use The Sever ip of B and in Server B use srt://0.0.0.0:10000 Also note the udp ports are 9000-9999 ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 21, 2020, 7:21pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/6 "2020-01-21T19:21:20Z")
Use the order you indicate, without success. =( ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 21, 2020, 7:27pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/7 "2020-01-21T19:27:57Z")
OK, do it as you indicate, and it doesn’t work. ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 21, 2020, 7:32pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/8 "2020-01-21T19:32:34Z")
Thank you for your comments, but I’m not successful yet. I attach configurations of both servers. You are working without a password. Any suggestions? ![](https://www.wowza.com/community/storage/attachments/1822-serveraa.png) ![](https://www.wowza.com/community/storage/attachments/1823-serverbb.png). ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 21, 2020, 10:56pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/9 "2020-01-21T22:56:34Z")
Does SRT work on public IP networks? both wowza servers are with public IP to the internet. Test on SERVER A, to transmit and receive the same SRT transmission (with the localhost IP), and it works. But when working with public IP, Server A does not connect to server B. When doing PING to the public IPS of both servers, they respond correctly. ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 22, 2020, 1:13am UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/10 "2020-01-22T01:13:20Z")
servera.pngservera-1.png ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 22, 2020, 1:14am UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/11 "2020-01-22T01:14:56Z")
serverb.png Using the process I explained… I successfully connected ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 22, 2020, 2:44am UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/12 "2020-01-22T02:44:04Z")
Yes it works on Public ips… ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [January 22, 2020, 3:37am UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/13 "2020-01-22T03:37:10Z")
Can’t tell you how much we appreciate you here at Wowza @Egbert Williams. Thanks for helping. ---
**Author:** ![John\_Guerrero](https://avatars.discourse-cdn.com/v4/letter/j/5daacb/32.png) [@John\_Guerrero](https://community.wowza.com/u/John_Guerrero)\ **Post date:** [January 22, 2020, 6:13pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/14 "2020-01-22T18:13:30Z")
@Egbert Williams Trying different streams, I noticed that sometimes the state was in error, but he is not able to connect to server B. In your successful case, with what transmission do you feed the server? In my case I have a file stream, which points in HTTP to my IP headerTV, and in which I use AppleHLS medicaster. Try all the mediacaster and with none works, only with AppleHLS is it able to display the ERROR message, with the others there is an waiting message. ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 22, 2020, 8:25pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/15 "2020-01-22T20:25:04Z")
I am sending a stream from vMix using RMTPS to ServerA. I suggest you use OBS in this test phase just you get it working. Also check your server to see which ports are open to udp…I believe between 9000-9999 you are safe ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 23, 2020, 6:23pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/16 "2020-01-23T18:23:19Z")
@yonathan lagos I notice that the status on server a SRT target is waiting. That suggest that there may not be input from its source. ---
**Author:** ![yonathan\_lagos](https://avatars.discourse-cdn.com/v4/letter/y/848f3c/32.png) [@yonathan\_lagos](https://community.wowza.com/u/yonathan_lagos)\ **Post date:** [January 26, 2020, 10:00pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/17 "2020-01-26T22:00:58Z")
Thank you very much to all. The problem was, that on the side of Server B, wowza is being used with docker. Docker requires mapping ports. For this case, 2 ports 5454 and 5555 must be used both in UDP. As documentation here information to use docker with wowza: [https://www.wowza.com/docs/how-to-set-up-wowza-streaming-engine-using-docker](https://www.wowza.com/docs/how-to-set-up-wowza-streaming-engine-using-docker) And finally to map the ports indicated above should be used --expose 5454-5555/udp --publish 5454-555:5454-5555/udp ---
**Author:** ![Amara\_Graham](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/amara_graham/32/381_2.png) [@Amara\_Graham](https://community.wowza.com/u/Amara_Graham)\ **Post date:** [January 27, 2020, 2:46pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/18 "2020-01-27T14:46:25Z")
Thanks for coming back and updating this thread on how you fixed it. ---
**Author:** ![Egbert\_Williams](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/egbert_williams/32/453_2.png) [@Egbert\_Williams](https://community.wowza.com/u/Egbert_Williams)\ **Post date:** [January 27, 2020, 6:15pm UTC](https://community.wowza.com/t/srt-transmission-between-wowza-servers/54489/19 "2020-01-27T18:15:31Z")
Beautiful