Intercluster trunk (Non-Gatekeeper Controlled)

[alexver1978]

Hi, how many ports use Intercluster trunk betweеn two clusters of CUCM?

[Manish Gogna]

Hi,

Please check the following

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/9_0_1/CUCM_BK_T98E8963_00_tcp-port-usage-guide-90/CUCM_BK_T98E8963_00_tcp-port-usage-guide-90_chapter_01.html

HTH

Manish

[alexver1978]

Hi, I have already seen this document. I didn't fined out answer on my question. I found intracluster ports but not intercluster. 

[Manish Gogna]

Search the document for 'ICT' , you will get the port info.

Manish

[alexver1978]

I have seen only 1720 TCP. I have captured traffic between two clusters of CUCM and see ports number: 38109, 37219, 38214, 38290,........and 1720. Do you know smt about these additional ports?
 

[Manish Gogna]

Hi,

This additional port range is most likely RTP traffic.

Manish

[alexver1978]

RTP traffics ports range - 16384 - 32767 UDP.  Am i right?

[Manish Gogna]

The Ephemeral port range for the system is 32768 - 61000.  In virtually all cases, source ports are ephemeral, meaning random within a specified range. When an outgoing request is made, the application solicits the host device for a port from its ephemeral pool. In a few cases, the destination port is also ephemeral, meaning that both the source and destination ports are random.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/8_6_1/portlist861.html

Manish

[alexver1978]

Thank you very much for your answer.