High Availability Cup servers

[ryan_oconnell]

Hey all,

I’m not having much fun on this deployment where I need to configure 2 UCM servers and 2 IM&P servers using Jabber 9.2 for Windows clients in HA Mode.

The guide is kinda all over the map and doesn’t really put it in one place. I believe I have most things setup but have number of issues.

The Jabber Clients seem to failover but the Phone Presence is lost during the failover process. I am trying to use SRV records. I had the DNS guys create the following records.

• For the Jab 4 Windows client it needs an SRV: 
  • Full SRV name _cuplogin._tcp.cup.acme.com
  • Entry 1: 
    • Service = _cuplogin
    • Protocol = _tcp
    • Port = 8448
    • Host = CUP1.acme.com
    • Priority = 0 (lower is higher pref)
    • Weight = 0
• Entry 2: 
  • Service = _cuplogin
  • Protocol = _tcp
  • Port = 8448
  • Host = CUP2.acme.com
  • Priority = 100
  • Weight = 0
  • For the SIP trunk on CUCM Pointing to CUPS: 
    • Full record: _sip._udp.cup.acme.com
    • Entry 1: 
      • Service = _sip
      • Protocol = _udp
      • Port = 5060
      • Host = CUP1.acme.com
      • Priority = 0
      • Weight = 0
• Entry 2: 
  • Service = _sip
  • Protocol = _udp
  • Port = 5060
  • Host = CUP2.acme.com
  • Priority = 100
  • Weight = 0
  • For the SIP trunk on CUP pointing to UCM an SRV: 
    • Full record: _sip._udp.ucm.acme.com
    • Entry 1: 
      • Service = _sip
      • Protocol = _udp
      • Port = 5060
      • Host = ucm1.acme.com
      • Priority = 0
      • Weight = 0
• Entry 2: 
  • Service = _sip
  • Protocol = _udp
  • Port = 5060
  • Host = ucm2.acme.com
  • Priority = 100
  • Weight = 0

The _cuplogin appears to work fine. My Jabber for windows clients are finding the Presence servers without requiring a hostname.

The other 2 SRV records seem not to work or I have deployed them incorrectly. On CUCM I put a check in the box “DESTINATION Address is and SRV” and I put in the Destination field “CUP.acme.com” Not sure if this is correct but seemed to make sense based on my records above.

I went onto CUP server and under Gateways it will only allow me to enter a dns name or and IP address. It will not allow for SRV records. On the Cup Server under Service Parameter configuration page for Cisco SIP Proxy. I put in “CUP.acme.com” for SRV Cluster NAME.

When I fail the first CUP server in the HA pair the Windows Jabber clients all fail over but the Phone presence doesn’t seem to failover.

Any input greatly appreciated

Thanks

[Dennis Mink]

when you say:

When I fail the first CUP server in the HA pair the Windows Jabber clients all fail over but the Phone presence doesn’t seem to failover.

do you mean presence status like "on a call"? If so,

That sort of status updates between CUPS and CUCM is done through a "Publish Trunk" between the two. Have you set the destination of the SIP trunnk on the CUCM up using SRV records as well?  or is it aware of both CUPS servers?

=============================
Please remember to rate useful posts, by clicking on the stars below. 

=============================

[ryan_oconnell]

Yes the phone presence as in "on a call" is the part that's not working after a failover from a HA pair on a Cup cluster.

TAC point out a section in the guide i overlooked. Apparently SRV records are not used when HA is enabled. I was told to change my SIP trunk on CUCM from and SRV record to be the FQDN of my CUP1 and CUP2 server instead.

I will try this tomorrow and hopefully have better results in my testing

[Dennis Mink]

I always prefer to put in IP addresses, as the destinations, so there is no dependency on DNS.

=============================
Please remember to rate useful posts, by clicking on the stars below. 

=============================