The value of tmnxMsdpPeerMsgRcvRate specifies the number of MSDP
messages (including source active messages) that are read from the
TCP session per tmnxMsdpPeerMsgRcvRateTime seconds.
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.