300-085 · Question #242
Assume that Cisco Unified Presence is deployed with high availability at a site with ID341300807. When a manual or automatic failover event occurs, which two parameters affect the client failover…
The correct answer is A. Client Re-Login Upper Limit Server Recovery Manager service Parameter. D. Client Re-login Lower Limit Server Recovery Manager service parameter. In a Cisco Unified Presence high-availability deployment, Jabber client failover timing is governed by the Server Recovery Manager (SRM) service parameters that define the bounds of the client re-login window.
Question
Assume that Cisco Unified Presence is deployed with high availability at a site with ID341300807. When a manual or automatic failover event occurs, which two parameters affect the client failover behavior of Cisco Jabber? (Choose two)
Options
- AClient Re-Login Upper Limit Server Recovery Manager service Parameter.
- BTimer Register Expires configuration on the SIP profile of the Jabber device.
- Cjabber-cortfig.xml file defines a PresenceServerFailoverTimer. such as
- DClient Re-login Lower Limit Server Recovery Manager service parameter
- Esecondary CUP node configuration defined in the Service Profile assigned to the user
How the community answered
(52 responses)- A65% (34)
- B19% (10)
- C10% (5)
- E6% (3)
Why each option
In a Cisco Unified Presence high-availability deployment, Jabber client failover timing is governed by the Server Recovery Manager (SRM) service parameters that define the bounds of the client re-login window.
The Client Re-Login Upper Limit SRM service parameter sets the maximum delay boundary within which Jabber clients will attempt to re-login after a failover event, directly bounding how long clients wait before reconnecting to an available node.
Timer Register Expires on a SIP profile controls the SIP registration refresh interval for voice endpoints and has no effect on Cisco Jabber presence client failover behavior.
A 'PresenceServerFailoverTimer' is not a recognized or supported parameter in the jabber-config.xml for controlling Cisco Unified Presence HA client failover timing.
The Client Re-Login Lower Limit SRM service parameter sets the minimum delay before Jabber clients begin re-login attempts; together with the upper limit, these two parameters define a randomized window that distributes reconnection load and prevents a thundering-herd problem during recovery.
Defining a secondary CUP node in the Service Profile enables the client to know an alternate server exists, but the actual timing and behavior of failover reconnection is controlled by the SRM service parameters, not the node definition.
Concept tested: Cisco Unified Presence HA Server Recovery Manager failover parameters
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cups/high_availability/guide/cups_b_high-availability-guide.html
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