The value of tmnxMsdpPeerMsgRcvRateThd specifies the number of
MSDP messages that can be processed before tmnxMsdpPeerMsgRcvRate is
set. This is useful during system startup and initialization.
By default, no MSDP messages are read from the TCP session
and this is specified by the value 0.
Once the number of MSDP packets defined in
tmnxMsdpPeerMsgRcvRateThd have been processed the rate of all
other MSDP packets is rate limited by no longer accepting messages
from the TCP session until tmnxMsdpPeerMsgRcvRateTime seconds have
elapsed.