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MRA using Expressway C only

mrmhar1408
Level 4
Level 4

Hi,

 

I have not yet deployed Cisco Jabber without VPN and i have Many questions about that:

I always like to "Make simple and straight"

  1. Can we deploy the MRA without DNS and use the IP Addresses instead ?
  2. Can we use only Expressway C and NAT the internal interface ?
  3. Is it required to import the certifications between Expressway and unified communcation or i can simply press "continue" when i get error message ?

I will have more questions but it's very important for me to clear these points first

 

Thanks

4 Replies 4

heathrw
Level 4
Level 4

 

Hi,

I have deployed a couple of these for production and you do require the DNS SRV records (internal and external)

 

There must be an ExpresswayC and ExpresswayE deployed, you do need a proper certificate validation (your own cert auth or through provider) between the ExpresswayC and ExpresswayE SIP/TLS for MRA. No wild card certificates can be used.

 

Certificates between the ExpresswayC and the Call Manager, Presence, Unity Connections you don't need validation or you can use TCP (you can also just click accept from the Jabber Clients also)

 

Check out the session PDF on this link (right hand side) which is very good run down and configuration.

https://www.ciscoliveaustralia.com/connect/sessionDetail.ww?SESSION_ID=1207