LB for SMPP / SMSCs in NFV environment
Hi all, We are trying to use the LMT F5 (installed on Openstack) to be SMSC Getaway (Short Message Service Center – Getaway) for external messages Our installation is based on minimum 2 SMSCs, and Maximum 8 SMSCs So, if an external application will connect to the SMSCs, the F5 will get the connection request (bind) and will try to connect to all active SMSCs with the same bind connection For messages running on top the active connection (submit_sm), the F5 will do a round robin between all the active SMSCs. Connection from Client & message from SMSC: 1:: Client1 ---(bind)---> F5 1-1:: F5 ----(bind)----> SMSC1 1-2:: F5 ----(bind)----> SMSC2.... (max of 8 SMSCs) 1-1':: SMSC1 -----(bind_resp1)----->F5 1-2':: SMSC2 -----(bind_resp2)----->F5.... (max of 8 SMSCs) 2:: If (bind_resp1 = OK) or (bind_resp2 = OK) or (max 8 SMSCs); respond back to Client1 with OK 2:: Else; respond back with NOK 3:: SMSC1 ----(deliver_sm1)---->F5 [store sequence, use internal sequence] 3-1:: F5 ----(deliver_sm1)---->Client1 4:: SMSC2 ----(deliver_sm2)---->F5 [store sequence, use internal sequence] 4-1:: F5 ----(deliver_sm2)---->Client1 4-1':: Client1 ----(deliver_sm_resp2)---->F5 3-1':: Client1 ----(deliver_sm_resp1)---->F5 4-1'':: F5 ----(deliver_sm_resp2)---->SMSC2 [use original sequence] 3-1'':: F5 ----(deliver_sm_resp1)---->SMSC1 [use original sequence] Connection from Client & message from Client: 1:: Client1 ---(bind)---> F5 1-1:: F5 ----(bind)----> SMSC1 1-2:: F5 ----(bind)----> SMSC2.... (max of 8 SMSCs) 1-1':: SMSC1 -----(bind_resp1)----->F5 1-2':: SMSC2 -----(bind_resp2)----->F5.... (max of 8 SMSCs) 2:: If (bind_resp1 = OK) or (bind_resp2 = OK); respond back to Client1 with OK 2:: Else; respond back with NOK 3:: Client1 ----(deliver_sm1)---->F5 [store sequence, use internal sequence] 4-1:: F5 ----(deliver_sm1)---->SMSC using Round Robin [store sequence, use internal sequence] 4-1':: SMSC ----(deliver_sm_resp1)---->F5 [use original sequence] 3-1':: F5----(deliver_sm_resp1)---->Client1 [use original sequence]
