[j-nsp] SFM buffer question

[Zhao, Wenmei (Sarah)]

What is the SFM buffer used for? There is an issue in our M40e,
and I see the following messages:
"sfm0 PFEMAN session: session buffer (size 65536) exceeded
sfm0 PFEMAN session: not in a session"
 
After that, I see routing engines stopped communicating from each other.
After some time, OSPF neighbors all went down.
 
So will the communication between routing engines and OSPF neighbor
relationship use the SFM buffer?
 
Regards,
Sarah