问题：

[多选] Which three factors have the biggest influence on OSPF scalability？（）

A . Flooding paths and redundancy
B . Amount of routing information in the OSPF area or routing domain
C . Number of routers with Cisco Express Forwarding enabled
D . Number of neighbor adjacencies
E . Other routing protocols in use
F . OSPF timer reconstruction negotiation
G . Redistribution with BGP neighbors
H . Redistribution with other IGP routing protocols， such as RIP or EIGRP