Upgrade Gurus, I am planning an upgrade from a CUCM and CUPS 8x to CUCM and IM&P 10x and I came across this passage in the CUCM 10.0(1) Upgrade Guide, and I was wondering if anyone has experience to share on this topic?
With the merging of Cisco Unified Communications Manager and IM and > Presence Service, enterprise and service parameters are now shared between > nodes in a cluster. As such, both types of nodes use the same settings for > enterprise and cluster-wide parameters. You need to be aware that not all > parameter settings are retained during an upgrade to Release 10.0(1). All > enterprise parameters and cluster-wide service parameters that are common > to both Cisco Unified Communications Manager and IM and Presence Service > retain the value specified on Cisco Unified Communications Manager only, > with one exception. The User Assignment Mode parameter is the only > enterprise parameter that is retained during upgrade. Service parameters > that apply to IM and Presence only are retained after an upgrade. > > Cisco recommends that before you begin an upgrade, you make a note of > parameter settings and evaluate the best settings for the combined cluster. > This will allow you to easily configure those settings after the upgrade is > complete. *Source: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/upgrade/10_0_1/CUCM_BK_U4214F9D_00_upgrade-guide-cucm-100/CUCM_BK_U4214F9D_00_upgrade-guide-cucm-100_chapter_010.html#CUP0_RF_P3D1854B_00 <http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/upgrade/10_0_1/CUCM_BK_U4214F9D_00_upgrade-guide-cucm-100/CUCM_BK_U4214F9D_00_upgrade-guide-cucm-100_chapter_010.html#CUP0_RF_P3D1854B_00>*
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