[cisco-voip] IM&P - Jabber for Everyone, MRA and private/public IP addressing

[Lelio Fulgenzi]

Thanks for your answers Matthew. 

My concern with the scale is this: If we deploy this to all our students, they will install the software on their laptops and mobile devices and that software will continue to run when they leave the campus and go home. Some of them will want to continue to use it actively, but others might just have it running in the background. Not sure if there are timers that log people out, but it was my understanding that Jabber has been modified to keep them logged in always. This means, those 25,000 active users on campus, now become 25,000 active users off campus. 

Then again, I could totally be missing something here. Not sure if setting up multiple multi-node MRA clusters is a solution? 





--- 
Lelio Fulgenzi, B.A. 
Senior Analyst, Network Infrastructure 
Computing and Communications Services (CCS) 
University of Guelph 

519‐824‐4120 Ext 56354 
lelio at uoguelph.ca 
www.uoguelph.ca/ccs 
Room 037, Animal Science and Nutrition Building 
Guelph, Ontario, N1G 2W1 

----- Original Message -----

From: "Matthew Loraditch" <MLoraditch at heliontechnologies.com> 
To: "Lelio Fulgenzi" <lelio at uoguelph.ca>, cisco-voip at puck.nether.net 
Sent: Monday, July 27, 2015 10:12:52 AM 
Subject: RE: [cisco-voip] IM&P - Jabber for Everyone, MRA and private/public IP addressing 



Inline 

Feel free to ask me more. I haven’t done it at your scale, but I have the entire expressway feature set deployed. 




Matthew G. Loraditch – CCNP-Voice, CCNA-R&S, CCDA 
Network Engineer 
Direct Voice: 443.541.1518 



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From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi 
Sent: Monday, July 27, 2015 9:55 AM 
To: cisco-voip at puck.nether.net 
Subject: [cisco-voip] IM&P - Jabber for Everyone, MRA and private/public IP addressing 








Just curious what people's thoughts are about Jabber for Everyone, MRA (via expressway) and private/public IP addressing of the presence servers. I've tried to find some documents that explain things, even in summary format, but with no luck. 





My (random) concerns: 




- does expressway support third party xmpp clients? No 

- does expressway support jabber for everyone? (IM&P only) Yes 

- does expressway scale to the possibly 25,000 IM users I might have? No, See here: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab10/collab10/sizing.html#pgfId-1284691 

I would doubt you’d ever have all 25k users off site though… expressway is only for remote users 

- expressway does not support all the on premise features, like file transfer - http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/release_note/Cisco-Expressway-Release-Note-X8-5-1.pdf 

Scroll to page 7 bottom 

- do i use private or public IP addresses? Your expressway-e(s) is/are the only server(s) that gets exposed to the internet and even then you can NAT it and use 2 interfaces, one internal and one DMZ 
- no real details on how to deploy presence server on public IP but still use expressway for UC – You don’t put a Presence server on a public ip. All External (MRA/XMPP/B2B) is via Expressway if you have it. 




Any ideas or pointers would help... Thanks! 





Lelio 











--- 
Lelio Fulgenzi, B.A. 
Senior Analyst, Network Infrastructure 
Computing and Communications Services (CCS) 
University of Guelph 





519 ‐ 824 ‐ 4120 Ext 56354 
lelio at uoguelph.ca 
www.uoguelph.ca/ccs 
Room 037, Animal Science and Nutrition Building 
Guelph, Ontario, N1G 2W1 




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