[CAUSE] A tBgpMaxNgPfxLmtThresholdReached notification is generated when the number of routes learned from the peer has exceeded tBgpPeerNgPfxLmtThreshold percent of the configured maximum (tBgpPeerNgPfxLmtMaxPrefix). [EFFECT] No direct effect but if the peer continues to advertise more routes then the number of routes may exceed the configured maximum (tBgpPeerNgPfxLmtMaxPrefix). In that case the peer would just be disabled. [RECOVERY] Increase the max-prefix for this peer.