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Cisco Bug: CSCuw29623 - CWMS Network Requirements doc missing details

Last Modified

Feb 09, 2017

Products (1)

  • Cisco WebEx Meetings Server

Known Affected Releases


Description (partial)


CWMS Planning Guide has a list of network ports that need to be opened for CWMS environments.

We have found two different types of connections not listed in the documentation above.

1) TCP 7001 traffic from the Media VM to IRP's Public IP. I also captured this in my lab and see a TCP SYN from my Admin/Media VM, which is immediately rejected by IRP's Public NIC via TCP RST. This repeats every 2 minutes.

Please note this is different from the HA heartbeat that is sent between the VMs every 5 seconds.

The only documented traffic over TCP 7001 to IRP is referencing the "Real IP (Eth0)" which is different from the Public IP as far as I understand.

Src: All internal virtual machines (Eth0 IP)
Dst: Real IP (Eth0) of the IRP virtual machines

Establishes reverse connections to the IRP. TCP connections are initiated from the internal virtual machines to the IRP virtual machines."

2) TCP 443 traffic from Admin/Web VM to IRP's Global IP address.

TCP 443 for IRP's Global IP address is documented for connections from web meeting clients, but nothing mentions internal VMs connecting to it. I have captured this in my 2.5 lab environment as well.

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