i understand these are current connections. the first one is per virtual server and the second one is for all the virtuals.
[root@ve1023:Active] config snmptranslate .1.3.6.1.4.1.3375.2.2.10.2.3.1.12
F5-BIGIP-LOCAL-MIB::ltmVirtualServStatClientCurConns
[root@ve1023:Active] config snmptranslate .1.3.6.1.4.1.3375.2.1.1.2.1.8.0
F5-BIGIP-SYSTEM-MIB::sysStatClientCurConns.0
and these are total connections (since last resetting).
[root@ve1023:Active] config snmptranslate .1.3.6.1.4.1.3375.2.2.10.2.3.1.11
F5-BIGIP-LOCAL-MIB::ltmVirtualServStatClientTotConns
[root@ve1023:Active] config snmptranslate .1.3.6.1.4.1.3375.2.1.1.2.1.7.0
F5-BIGIP-SYSTEM-MIB::sysStatClientTotConns.0