topic Jabber Windows PC cannot login via Expressway in Collaboration Applications

Jabber Windows PC cannot login via Expressway

VCsupport17 — Mon, 18 Mar 2019 01:26:52 GMT

Hi Community,

We have implemented Jabber clients and works internally.

We want to deploy also users outside the company. We deploy Expressway Core and Edge and integrated with CUCM. B2B calls are working fine but MRA doesn't work. We tested Jabber for windows PC to login outside the network via Expressway but fails. On the Expressway Edge, i cannot see any logs that the user is trying to login. Required certificates for Expressway-C and E were loaded. UCM traversal zone for MRA is active on Expressway.

We have created SRV records on the external DNS and did test on TAC tool and shows result below: (Domain and FQDN for Edge masked)

_collab-edge SRV record was created and pointed to Expressway Edge FQDN. Do we need to create SRV records _cisco-uds and _cuplogin on the external DNS also? What troubleshooting steps need to take? Please advice. Thank you.

Hi,

Manish Gogna — Thu, 20 Oct 2016 08:35:23 GMT

Hi,

Please complete the checks as per the following guide for troubleshooting MRA login issues

http://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798-technote-cucm-00.html#anc5

Manish

Hi Manish,

VCsupport17 — Thu, 20 Oct 2016 16:29:11 GMT

Hi Manish,

Thank toy for your reply. I'm little bit confused with the item 1?? It says the _cisco-uds and _cuplogin SRV records should be created on external DNS pointing Expressway Edge FQDN?

"1. Collaboration Edge Service Record (SRV) Not Created and/or Port 8443 Unreachable

For a Jabber client to be able to log in successfully with MRA, a specific collaboration edge SRV record must be created and accessible externally. When a Jabber client is initially started, it makes DNS SRV queries:

_cisco-uds: This SRV record is used in order to determine if a CUCM server is available.
_cuplogin: This SRV record is used in order to determine if an IM&P server is available.
_collab-edge: This SRV record is used in order to determine if MRA is available.

No, you don't need those SRVs

Jaime Valencia — Thu, 20 Oct 2016 16:48:15 GMT

No, you don't need those SRVs on the external network, the MRA configuration guide explains what SRVs are required, and where they're needed.

What you need to review are the EXP-E and EXP-C logs when you try to login, as well as a PRT from that Jabber client.