The value of tmnxMsdpPeerGroupMsgRcvRateTime specifies the maximum
number of source active messages that will be accepted by MSDP.
This effectively controls the number of source active messages that can be
stored on the system. 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
tmnxMsdpPeerGroupMsgRcvRateThd have been processed the rate of all
other MSDP packets is rate limited by no longer accepting messages
from the TCP session until tmnxMsdpPeerGroupMsgRcvRateTime seconds have
elapsed.